DOCSLIB.ORG

Southern Ontario Orchid Society

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Southern Ontario Orchid Society SOUTHERN ONTARIO ORCHID SOCIETY established in 1965 April 2006 NEWS---Volume 41, Issue 4 Executive: President, Jay Norris 416-463-7411; Vice-presidents, Wayne Eyles and Mario Ferrusi ; Secretary, Sue Loftus 905-839-8281; Treasurer, Joe O’Regan 416-759-2538 Membership: Annual Dues $25.00/Calendar Year. Membership Secretary, Hess Pommells 416-245- 0369, Apt. 503, 370 Dixon Road, Weston, Ontario, M9R 1T2 Web site: www.soos.ca Member of the Canadian Orchid Congress; Affiliated with the Orchid Digest, the American Orchid Society, and the International Phalaenopsis Alliance Honorary Life Members Walter Norman, Terry Kennedy, Doug Kennedy, Inge Poot, Peter Poot, Joe O’Regan Program: April 2, Toronto Botanical Gardens Floral Hall, Sales 12:30, program 2:00 pm: KEN MEIER on the Catasetinae. Ken is a graduate of the University of Michigan where he received his Bachelor of Science degree in Protozoology and Microbiology. Ken has been growing orchids for over 20 years and uses his training in microbiology to grow orchids from seed in a laboratory he built in his home. Ken has traveled to South America over the last 10 years studying orchids in their native habitats. In the late 90's Ken traveled with Arthur Holst, author of 'World of Catasetums', as they explored the various habitats of the genera in Catasetinae. Since then, Ken has traveled to Ecuador, Peru and most recently to Thailand. Ken is Past President of the National Capital Orchid Society, the Hollin Hills Orchid Society and is currently an AOS judge at the National Capital Judging Center. Ken has recently established an orchid-internet business to help reduce the number of plants in his collection and to help defray some of the costs of this addictive hobby. His web site can be found <www.orchidenterprise.com> To support his habit, Ken is currently working for the local telephone company, providing fiber optic networks for the Federal Government and Broadcast networks like CBC, CBS, NBC etc. Ken’s talk will be an introduction to the subgroup Catasetinae which includes Catasetums, Mormodes, Cycnoches, Clowesia, Galeandra and Dressleria. After a pictorial look at some of the more common and easy to find species and hybrids, Ken will take you on a quick tour of the Catasetum habitats in Brazil. A review of some of the cultural needs of the genus will be followed by a question and answer period. Membership Renewal. We need your renewals. Our calendar year for membership runs from January 1 to December 31. So far only 1/2 of our 2005 members have renewed. If your address label carried a red 2005, we have no record of a renewal and you need to contact our membership secretary, Hesse Pommells at 416-245-0369, Apt. 503, 370 Dixon Road, Weston, Ontario, M9R 1T2. If you do not renew by April 2, you will not receive the next newsletter. 1 President’s Message. FLUORESCENT BULB HAZARD and Well Folks it's that time again; time to take DISPOSAL a deep breath between the shows. Time to Summary of Toronto Star article of 2006 03 pause and see what has bloomed since the 04 page B1 last show and what will be available for displays in the next show. With Montreal, Many orchid growers use fluorescent bulbs, London and Ottawa shows all coming soon, either long tubes or compact types. please check your collections for plants to Fluorescent bulbs are very efficient in share with Joe O'Regan and Wayne Eyles; producing light with minimal heat. But these they can't do it all by them selves, but they bulbs contain a small amount of mercury. try!!! The enclosed mercury is essential for the production of light in this design. Once a bulb The Executive is working with the is broken the mercury, as liquid droplets coordinators of the TBG to solve our problems and/or vapour is released into the with our meeting location. I would ask environment. everyone to keep their cool, as we will be Mercury is hazardous to human health and back in the Garden Auditorium for the May it accumulates in our bodies over long time meeting and probably for the Summerfest as periods. All exposures to mercury by humans well, but with Summerfest we will be outside is considered to be cumulative since the with the BBQ. Hopefully we will not have to process of eliminating it is so slow. Food change any dates to avoid conflicts, but we consumption probably accounts for most will work to make it smooth and enjoyable intake but our food absorbs the mercury from for everyone. the environment. The Show Committee will be having their Ideally, the used bulbs should be stored, post-mortem for our show soon, so if you avoiding breakage and disposed of in an have any suggestions on how the show could appropriate manner. They should be run more smoothly, please send them along. considered as hazardous waste material. A Peter Poot and Doug Kennedy will be process is starting to encourage stores that assuming the roles of Co-Chairs (Well not sell the bulbs to collect them for recycling. quite, Doug will chair and I will attempt to The used bulbs can have the mercury assist, Editor ) for our 2007 show, and we extracted for re-use and to avoid welcome input from everyone. Better still environmental damage. get involved, we always need more volunteers. In the meantime, the bulbs can be disposed of to scheduled hazardous waste days into the I hope everyone enjoyed the show at the garbage collection system in your Royal Botanical Gardens in Burlington last neighbourhood. Check with your local weekend, and I look forward to seeing many municipal services. The bulbs can also be of you in Montreal. delivered to collection depots that ahndle other toxic wastes such as paints, oils and Happy Growing solvents. IF a bulb breaks in your house, the mercury Jay Norris will scatter as little droplets. Wet cloths and mops are more desireable than using a vacuum as it vapourizes the mercury. The 2 mercury laden cloth should be disposed of Please contact Wayne Hingston at 905-649- with the other broken parts of the bulb as 2467 or hazardous waste. Open windows and air out The 5th Annual Native Orchid the area extensively to reduce your Conference will take place June 9-12, exposure. 2006 in Ashland, Oregon. This is a great Life involves risks but you always focus on chance to learn about the terrestrial orchids reducing that risk to yourself and the of South-western Oregon. Ashland is situated environment. Anything dumped into the in the convergence of three mountain environment will eventually come back to ranges. This unusual geological convergence us. gives rise to a unique and diverse flora NEWCOMERS’ MEETING which supports 25 native orchid species, 14 of which bloom in June. Presentations as Monday April 24, 2006 at 7 PM. Boardroom of well as field trips with knowledgeable people the TBG The focus of this meeting is to make the conference a great learning review effective culture of orchids over the opportunity. summer period. We will discuss watering, Registration is limited to the first 100. $100 fertilizing, repotting, light levels and inside US per person or $175 US per couple. versus outdoor culture strategies. This meeting is open to all members but should For more information contact Carol be ideal for those that are learning the basic Ferguson, Conference Co-Chair (541) 552- aspects of growing orchids. Come knowing 6748 or [email protected] or check out the the types you grow or be prepared to find out Native Orchid Conference web site. your orchid's types through examples, bring pictures or the actual plants. Any Show Table Results for March 2006 clarification needed call Wayne Hingston at Class 1: Cattleya Alliance 905-649-2467. 1st Pot. Kate Suns'y #1 Seed Sowing/flasking Workshop I Class 2: Paphs and Phrags have been asked by some members to repeat 1st Phrag. caudatum grown by Jean a seminar on the details of sowing your own Chang orchid seeds. Since this is a technical skill and involves specialized equipment and Class 3: Phalaenopsis and Vanda Alliance dedication over a lengthy period of time, only 1st Phalaenopsis (wrong name) grown by those that are seriously interested in John Allison starting soon should apply. The seminar works best at my home, near Uxbridge, as 3rd Dtps. Taida Salu grown by John Alison everything I need is here. The ideal group Class 4: Oncidium, Brassia, Odontoglossum size is 5 or 6 since this will be Alliance demonstration based, not theory. The 1st Odcdm. Hansueli Isler grown by Eric seminar will take approximately 2 hours Tai plus travel time (1 hour from most of 2nd Tolumnia Mem. Ralph Yagi 'John' Toronto). I would like to schedule it this grown by Henry Glowka spring on a Saturday. A nominal charge of 3rd Oncidium ampliatum grown by Anita $10.00 per person will be expected. If you Kho have seed ready to sow between April and Class 5: Cymbidium June it may be possible for me to use it in No entries this month the demo and you will keep the results. Class 6: Dendrobiums 3 1st Dendrobium schuetzei grown by Kin 15-16, TAOA Show, Toronto. Lam Mok 29-30, Ottawa Orchid Society Show. 2nd Dend. kingianum (?) grown by Mei 3rd Dendrobium Sweet Song 'Memory' May grown by Anita Kho 6, Toronto Centre Judging, 1 pm, Toronto Class 7: All Others Botanical Garden 1st Catasetum saccatum grown by Calvin 7, SOOS meeting, Toronto Botanical Wong Garden 12:30 pm.
Load more

Recommended publications
  • Catasetums and Their Kin by Sue Bottom, [email protected]
    St. Augustine Orchid Society www.staugorchidsociety.org Catasetums and Their Kin by Sue Bottom, [email protected] Do you get tired of taking care of your orchids in the winter? Wouldn’t you like an orchid you don’t have to water or fuss with during the cold winter months? The Catasetinae, consisting mainly of the Catasetums, Clowesias, Cycnoches, Mormodes and their hybrids, are a great group of orchids. Many are easy to grow and bloom once you understand their cultural needs. They explode with new growth during the summer growing season requiring copious amounts of water and fertilizer and most of them go into a deep sleep during the winter when they can be mostly ignored. You can put them in a dry corner, garage or closet and not worry about them at all during the winter as long as the temperature does not fall below 55. They are repotted in the winter during dormancy or in early spring as new growth emerges but not watered until that new growth is 4 or 5 inches tall. Simple! When you first start growing the Catasetinae, you tend to think of Catasetums, Clowesias, Cycnoches and Mormodes all as one generic group, lumped together as catasetums. You learn the basics of how they like bright light, plenty of air movement and plenty of water and fertilizer during the growing season. Once you get the fever and you start growing the different varieties, you learn about some of the differences in growing and blooming the different genera. Catasetums and Clowesias are the most easily grown of all the Catasetinae.
    [Show full text]
  • Catasetums, Cycnoches and Clowesias Understanding the Growth Cycle Is Key to Success
    Cycnoches cooperi is primarily from Peru. Colors range from burnished brass to chocolate brown. Grower: Greg Allikas. The Beginner’s Guide to Growing Don Garling. Catasetums, Cycnoches and Clowesias Understanding the Growth Cycle is Key to Success GREG ALLIKAS TEXT AND PHOTOGRAPHS BY FRED CLARKE WWW.AOS.ORG MARCH 2012 ORCHIDS 167 ONE OF THE BEST WAYS TO KNOW and vandas at about 2,500–4,000 foot- how to grow an orchid genus is to un- candles; this is where a strong shadow will derstand the conditions under which they be cast by your hand when held 12 inches grow naturally. Catasetinae — a group that (30 cm) above the plant. For under-lights includes the genera Catasetum, Cycnoches culture, the foliage should be as close to and Clowesia — live where there are two the light source as possible without burn- distinct weather patterns: a hot, humid and ing the leaves. rainy monsoonal summer followed by a Temperatures Summer: days 70–95 dry, cool winter. Catasetinae plants have F (21–35 C), nights 60–75 F (16–24 C). adapted to these weather conditions by Winter: days 60–75 F (16–24 C), nights having a growth phase in the summer fol- 55–65 F (13–18 C). lowed by a rest period or dormancy when Air Movement Plants in the Cataseti- the leaves yellow and drop off in winter. nae, like almost all orchids, do best with When the plants are dormant, little or no abundant air movement, so give plenty water is needed as the pseudobulbs store of it.
    [Show full text]
  • Pollination Biology in the Dioecious Orchid Catasetum Uncatum
    Phytochemistry 116 (2015) 149–161 Contents lists available at ScienceDirect Phytochemistry journal homepage: www.elsevier.com/locate/phytochem Pollination biology in the dioecious orchid Catasetum uncatum: How does floral scent influence the behaviour of pollinators? ⇑ Paulo Milet-Pinheiro a,b, , Daniela Maria do Amaral Ferraz Navarro a, Stefan Dötterl c, Airton Torres Carvalho d, Carlos Eduardo Pinto e, Manfred Ayasse b, Clemens Schlindwein f a Departamento de Química Fundamental, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, s/n, 50670-901 Recife, Brazil b Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89069 Ulm, Germany c Department of Organismic Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria d Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido, Avenida Francisco Mota 572, Mossoró, Rio Grande do Norte 59625-900, Brazil e Programa de Pós-Graduacão em Entomologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, Ribeirão Preto-São Paulo 14040-901, Brazil f Departamento de Botânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil article info abstract Article history: Catasetum is a neotropical orchid genus that comprises about 160 dioecious species with a remarkable Received 6 October 2014 sexual dimorphism in floral morphology. Flowers of Catasetum produce perfumes as rewards, which Received in revised form 23 February 2015 are collected only by male euglossine bees. Currently, floral scents are known to be involved in the selec- Available online 11 March 2015 tive attraction of specific euglossine species. However, sexual dimorphism in floral scent and its eventual role in the pollination of Catasetum species have never been investigated.
    [Show full text]
  • Phylogenetic Relationships in Mormodes (Orchidaceae, Cymbidieae, Catasetinae) Inferred from Nuclear and Plastid DNA Sequences and Morphology
    Phytotaxa 263 (1): 018–030 ISSN 1179-3155 (print edition) http://www.mapress.com/j/pt/ PHYTOTAXA Copyright © 2016 Magnolia Press Article ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.263.1.2 Phylogenetic relationships in Mormodes (Orchidaceae, Cymbidieae, Catasetinae) inferred from nuclear and plastid DNA sequences and morphology GERARDO A. SALAZAR1,*, LIDIA I. CABRERA1, GÜNTER GERLACH2, ERIC HÁGSATER3 & MARK W. CHASE4,5 1Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-367, 04510 Mexico City, Mexico; e-mail: [email protected] 2Botanischer Garten München-Nymphenburg, Menzinger Str. 61, D-80638, Munich, Germany 3Herbario AMO, Montañas Calizas 490, Lomas de Chapultepec, 11000 Mexico City, Mexico 4Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, United Kingdom 5School of Plant Biology, The University of Western Australia, Crawley WA 6009, Australia Abstract Interspecific phylogenetic relationships in the Neotropical orchid genus Mormodes were assessed by means of maximum parsimony (MP) and Bayesian inference (BI) analyses of non-coding nuclear ribosomal (nrITS) and plastid (trnL–trnF) DNA sequences and 24 morphological characters for 36 species of Mormodes and seven additional outgroup species of Catasetinae. The bootstrap (>50%) consensus trees of the MP analyses of each separate dataset differed in the degree of resolution and overall clade support, but there were no contradicting groups with strong bootstrap support. MP and BI combined analyses recovered similar relationships, with the notable exception of the BI analysis not resolving section Mormodes as monophy- letic. However, sections Coryodes and Mormodes were strongly and weakly supported as monophyletic by the MP analysis, respectively, and each has diagnostic morphological characters and different geographical distribution.
    [Show full text]
  • Catasetum, Clowesia, Cycnoches, Mormodes and Their Hybrids Phyllis S
    BEST PRACTICES IN CULTURE OF CATASETUM, CLOWESIA, CYCNOCHES, MORMODES AND THEIR HYBRIDS PHYLLIS S. PRESTIA OME YEARS AGO, I received my fi rst Cataseti- will discuss the cultural requirements of these specifi c nae seedling, Fredclarkeara After Dark ‘Black Pearl’ Catasetinae and their hybrids. Sfrom an opportunity table supplied by Fred Clarke Orchid culture ex situ is an attempt at simulating of Sunset Valley Orchids in Vista, CA. I was at once ex- the cultural conditions of temperature, light, air move- cited at the prospects of growing such a curious and ment, moisture, humidity, and fertilizer. In situ, these beautiful orchid and terrifi ed at potentially killing what all work in conjunction. It can be helpful to examine surely was a valuable one. I didn’t have a greenhouse these separately. at that time and had no knowledge about the plant’s Temperature: The genera we are discussing are cultural requirements. found in Mexico and the Tropical Americas between So I consulted the experts, a few friends who grew the Tropic of Cancer and the Tropic of Capricorn. Lo- Catasetinae (some well, some not so well) and read cated around the equator, these are primarily tropical what I could fi nd about culture. As with any orchid, and subtropical plants which prefer warmer tempera- a thorough understanding of the natural habitat and tures. High temperatures in the 80°s and 90°s F to lows seasonal conditions is the key to trying to replicate as in the mid to high 50°s F are ideal. Temperatures slight- closely as possible what exists in an ex situ growing ly above or below this range may stress the plants but area.
    [Show full text]
  • Catasetum and Cycnoches — Part 4 — the Hydras of Cycnoches STEPHEN R
    BEGINNER'S SERIES — 28 Catasetum and Cycnoches — Part 4 — The Hydras of Cycnoches STEPHEN R. BATCHELOR I magine a Dr. Jekyll/Mr. Hyde transformation from a lovely, graceful swan to a hideous, writhing hydra, and you have made the transition from the Eu-Cycnoches to the Heteranthae section of Cycnoches ! In plant habit, the species of the Heter- anthae section are not appreciably different from those of Eu-Cycnoches ; they flower at about the same time; but once they flower, there is no question that they are strikingly different - most of the time! The male flowers of the half-dozen or more Cycnoches species constituting the Heteranthae section are outlandish. In this regard, they rival the flowers of some Catasetum species. FIGURE 1 — Cycnoches maculatum 'Mackay', CBR/AOS (male flowers) — photo: Richard Clark The inflorescences bearing male flowers of the Heteranthae section are them- selves distinct. They are generally longer and more floriferous than the male inflo- rescences of the Eu-Cycnoches section. The inflorescence of Cycnoches maculatum pictured in FIGURE 1 is 54 cm (21 inches) long and carries 26 male flowers and 3 buds. With an inflorescence of that length, like many catasetums, this plant re- quired elevation for proper development and display of its flowers. The non-resupinate male flowers of Cycnoches maculatum illustrated, having a vertical span of 8.0 cm (3 inches) and horizontal span of4.0 cm (11/2 inches), bear perhaps the greatest resemblance of the Heteranthae species to the Eu-Cycnoches section. Their greenish sepals and petals, heavily spotted in reddish-purple, are fairly broad and only moderately reflexed.
    [Show full text]
  • The Catasetinae by Madamoiselle Compot
    The Catasetinae By Madamoiselle Compot Orchids are the most advanced plants in the world and no group of orchids demonstrates this fact better than the sub-tribe Catasetinae. Catasetinae, consisting of the Genera Catasetum, Cycnoches, Mormodes, and Clowesia, are widespread across the lowland tropical areas of Central and South America. They are weed-like epiphytes usually found growing in vast quantity on fences, stumps, and in the middle of tree trunks. These plants require a rest period where they receive no water or fertilizer for several months after losing their beautiful foliage. The highly fragrant flowers are either male or female. Cycnoches, pronounced sik-no-keez, was named for its dramatic, swan-shaped flowers. They are further divided into two color forms and two flower forms. Eu-cycnoches have similar male and female flowers. They tend to be the same color with the female distinguished by the larger, waxier lip. Heteranthes have male and female flowers that look completely different from each other. The two color forms are brown and ayacuchoensis or green. Usually, the green form is reserved for the female flowers although, Cyc. herrenhusanum is a eu- cycnoches that has green flowers for both. Cycnoches barthiorum is the most spectacular of three new species used in cultivation. The male flowers, like a male peacock, are vibrantly colored in green or pink with dark brown spots. The female form is solid green. This species, like other heteranthes, actually had a different name and awards depending on if the plant displayed the male or the female form. It took taxonimists twenty years to figure this out! Cycnoches warscewiczii is the flower that got Fred Clarke hooked on these plants all those years ago.
    [Show full text]
  • Revision Der Euglossa Cordata-Gruppe Und Untersuchungen Zur Funktionsmorphologie Und Faunistik Der Euglossini (Hymenoptera, Apidae)
    ©Entomofauna, Ansfelden Austria, bestellen unter www.biologiezentrum.at Revision der Euglossa cordata-Gruppe und Untersuchungen zur Funktionsmorphologie und Faunistik der Euglossini (Hymenoptera, Apidae) Benjamin BEMBÉ ©Entomofauna, Ansfelden Austria, bestellen unter www.biologiezentrum.at Abb: Euglossa amazonica beim Duftstoffsammeln auf Gongora aff. cruciformis in Villa Tunari, Bolivien, November 2002. 2 ©Entomofauna, Ansfelden Austria, bestellen unter www.biologiezentrum.at 3 ©Entomofauna, Ansfelden Austria, bestellen unter www.biologiezentrum.at 4 ©Entomofauna,a,, AnsfeldenAn Austria, bestellen unter www.biologiezentrum.at Entomofauna ZEITSCHRIFT FÜR ENTOMOLOGIE Supplement 14, 146 Seiten ISSN 0250-4413 Ansfelden, 15. Mai 2007 Revision der Euglossa cordata-Gruppe und Untersuchungen zur Funktionsmorphologie und Faunistik der Euglossini (Hymenoptera, Apidae) Benjamin BEMBÉ Summary The genus Euglossa currently contains 106 extant species in 5 subgenera and 12 species groups. The present work provides a detailed overview of the subgenus Euglossa (Euglossa). New keys are offered for the identification of ((: to the subgenera of Euglossa, the species groups in Euglossa (Euglossa), and for the first time to the species in the Euglossa cordata group. The species in the Euglossa cordata group are studied and taxonomically revised using light- as well as scanning electron microscopy (SEM), and based on type material and collections holdings from various geographic regions. Instead of the previously 5 ©Entomofauna, Ansfelden Austria, bestellen unter www.biologiezentrum.at recognized 21 species, the group is reduced to now 15 species. Five names, Eg. azureoviridis, Eg. cyanaspis, Eg. gaianii, Eg. ultima, and Eg. violaceifrons, are relegated to junior synonymy. Eg. erythrochlora becomes a subspecies of Eg. hemichlora. For Eg. tridentata, characters of the genitalia place it in the Euglossa cybelia group.
    [Show full text]
  • Catasetum and Cycnoches — Part 1 — Catasetums with "Perfect" Flowers STEPHEN R
    BEGINNER'S SERIES — 25 Catasetum and Cycnoches — Part 1 — Catasetums with "Perfect" Flowers STEPHEN R. BATCHELOR THUS FAR in this series, the emphasis has been on genera which grow almost continuously, though slowly. For these genera, beginners are able to adopt cultural practices which require little variation. And yet, some genera do not grow constantly, but fluctuate between a state of rapid growth and one of nearly complete inactivity — all in the course of a year. Treatment of these genera, in contrast, must vary considerably for the best growth and flowering. Photo: Greg Allikas FIGURE 1 — Reaching a leafy maturity, the newest pseudobulb of this plant of Catasetum expansum initiates four inflorescences in mid-summer. Species and hybrids of Catasetum and Cycnoches, two closely related genera, are excellent examples of orchids which have a changeable growth rate. Their growth generally occurs in a great flush during the spring and summer, only to come to a standstill during the fall and winter. This may be disconcerting at first to the beginner. But with some experience, it soon becomes apparent that the plants follow a cycle of growth, clearly marked by changes in their behavior and appearance. Observing these changes, and altering cultural practices accordingly, the beginner should have much success with catasetums and cycnochcs, for they are among the most vigorous and floriferous of orchids. A large part of this series on catasetums and cycnoches will be devoted to heir cycle of growth, and to how several talented growers meet the fluctuating needs of these genera. Prior to that, however, representative species and hybrids need to be introduced.
    [Show full text]
  • Redalyc.ROOT ANATOMY of GALEANDRA LEPTOCERAS
    Lankesteriana International Journal on Orchidology ISSN: 1409-3871 [email protected] Universidad de Costa Rica Costa Rica Barretta-dos-Santos, Leila E.; Sant'Ana, Jéssica; Petini-Benelli, Adarilda; Pedroso-de- Moraes, Cristiano ROOT ANATOMY OF GALEANDRA LEPTOCERAS (ORCHIDACEAE) Lankesteriana International Journal on Orchidology, vol. 15, núm. 2, agosto, 2015, pp. 159 -165 Universidad de Costa Rica Cartago, Costa Rica Available in: http://www.redalyc.org/articulo.oa?id=44341141005 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative LANKESTERIANA 15(2): 159–164. 2015. ROOT ANATOMY OF GALEANDRA LEPTOCERAS (ORCHIDACEAE) LEILA E. BARRETTA-DOS-SANTOS1, JÉSSICA SANT’ANA1, ADARILDA PETINI-BENELLI2 & CRISTIANO PEDROSO-DE-MORAES1,3 1 Biological Science Department of Hermínio Ometto University Center – UNIARARAS. Rua Maximiliano Baruto, 500, Jd. Universitário. CEP: 13.607-339. Araras/SP. Brasil 2 Federal University of Mato Grosso, Herbarium-Botany Department, P.O. Box 198, Centro, CEP: 78005-970. Cuiabá/MT. Brasil 3 [email protected] ABSTRACT. Due to the scarce information about the root organization of Galeandra genus representatives, this study aimed to describe the root anatomy of Galeandra leptoceras, describing adaptations related to hydric relations and characters of taxonomic interest. Five roots of three plants were fixed and preserved in 50% alcohol. These ones were cut in midline with the use of razors. The sections were stained with 0.05% Safrablau and mounted in glycerin. It was observed that the roots of species are structurally adapted to epiphytism; however, some anatomical features show that this species requires more frequent watering or environments with constant humidity.
    [Show full text]
  • Osmophore Diversity in the Catasetum Cristatum Alliance (Orchidaceae: Catasetinae)
    LANKESTERIANA 16(3): 317—327. 2016. doi: http://dx.doi.org/10.15517/lank.v16i3.26649 OSMOPHORE DIVERSITY IN THE CATASETUM CRISTATUM ALLIANCE (ORCHIDACEAE: CATASETINAE) EVELYN P. FRANKEN1,2, LUDMILA M. PANSARIN1 & EMERSON R. PANSARIN1 1 Biology Department, Faculty of Philosophy, Sciences and Literature of Ribeirão Preto/University of São Paulo - FFCLRP/USP. Av. Bandeirantes, 3900. CEP 14040-901. Ribeirão Preto/SP. Brazil. 2 Author for correspondence: [email protected] ABSTRACT. Catasetum is a neotropical orchid genus of 130 species characterized by its unisexual flowers. They are pollinated by male Euglossini bees. It is widely know that these bees collect volatile compounds in Catasetum from structures called osmophores. However, there is little information on morpho-anatomy and histochemistry of secretory tissues for this neotropical genus and data are lacking. Based on these arguments members of the Catasetum cristatum alliance, namely C. arietinum, C. ariquemense, C. barbatum, C. carolinianum, C. cristatum, C. lanciferum, C. multifidum, C. multifissum, C. rivularium and C. semicirculatum were analyzed. The labellum of male flowers of this alliance is elongate and with fimbriate margins, possessing two protuberances and a median saccate portion. The labellum of female flowers is galeiform and there is no ornamentation. The entire adaxial surface of the labellum is secretory in both sexes, including the fimbriae of male flowers. The structure of the secretory tissue is similar among species, and they are composed of a simple epidermis and five layers of underlying parenchyma. In most species the epidermis is flat, and cells are elongated in the saccate portion. In C. ariquemense and C. carolinianum the epidermal cells are papillous, while in C.
    [Show full text]
  • Catasetinae Plant Culture by Fred Clarke Secrets of Success for Growing Cycnoches, Catasetum, Mormodes and Clowesia
    CULTURE CORNER Catasetinae Plant Culture By Fred Clarke Secrets of Success for Growing Cycnoches, Catasetum, Mormodes and Clowesia pollinia and it shoots out from the flower. These flowering habits and traits are unusual, adding to their intrigue. The cultural information below is a generalization and will apply in most situations; however, each grower and growing environment is different. I encourage you to make adjustments based on your experience and growing conditions. GROWTH CYCLES Plants in the Catasetinae have distinctive growth and rest periods (dormancy). For best plant development, it is important to understand and respect these growth phases. When the plants are in active growth, maintain constant root-zone moisture and fertilize regularly. This is essential to optimizing the development of new growth. When the plants are dormant, little or no water is needed as the pseudobulbs store enough moisture FRED CLARKE and nutrients to survive dormancy. Catasetinae culture is not difficult. All I GOT HOOKED ON THIS GROUP OF growth phase where you can almost it takes is an understanding of the plants almost 20 years ago when I watch them grow. In nature, the factors seasonal growth patterns. The plants’ purchased a package deal of five plants determining dormancy are marked by the vegetative state signals to the grower for the price of four from a JEM end of the rainy season and the resulting their changing needs. Interpret the Orchids’ ad in the AOS Bulletin (now cooler night temperatures. This com- signals and make the appropriate cultural called Orchids). I received them in the bination is the dormancy trigger.
    [Show full text]