Animal Pollinated Monocots Review

Total Page：16

File Type：pdf, Size：1020Kb

Animal pollinated monocots Review: monocots vs. dicots http://trc.ucdavis.edu/biosci10v/bis10v/week8/dicotmonocot.gif Review: monocots vs. dicots Angiosperms Basal angiosperms 1 cotyledon tricolpate pollen Monocot phylogeny (Graham et al. 2006) Monocot phylogeny Animal pollinated Wind pollinated Orchidaceae Cyperaceae Araceae Juncaceae Liliaceae Poaceae Iridaceae Araceae 109 genera; 2,830 species Mainly tropical Habit: Herbaceous Leaves: Often with reticulate veination Araceae spadix spathe Lysichiton americanus Monstera deliciosa Araceae Inflorescence: Fleshy spike (spadix), subtended by showy bract (spathe) Flowers: Unisexual (plants monoecious) Fruit type: berry Araceae Amorphophallus sp. Amorphophallus titanum Iridaceae 78 genera, 1,750 species Habit: Herbaceous, often with stem modifications Leaves: 2-ranked, equitant Iridaceae petaloid style 3 stamens Iris pseudacorus Olsynium douglasii Iridaceae Symmetry: bilateral or radial Perianth parts: 6 tepals Stamens: 3 Pistils: 1, compound (3 carpels) Ovary position: inferior Fruit type: capsule Orchidaceae 788 genera; 19,500 species Habit: Herbaceous, often epiphytic h"p://media+2.web.britannica.com/eb+media/50/5650+004+479D6282.jpg? Orchidaceae Modifications for drought resistance: -Pseudobulbs, store water and nutrients. -Thickened aerial roots strongly mycorrhizal (mutualism with fungi). -Aerial roots often covered with a velamen (specialized, spongy epidermis) that absorbs water from air. -Sunken stomata on leaves, allow CO2 in and O2 out, and little H2O out. -Thick waxy cuticle (waxy surface covering plant to prevent water loss). Adaptations to epiphytic lifestyle Orchidaceae column pollinia labellum Calypso bulbosa Corallorhiza maculata Orchidaceae Symmetry: bilateral Perianth parts: 3 sepals, 3 petals Stamens: 1 or 2, fused into column Pistils: h"p://weesc.com/LS_hybridisation.html 1, compound (3 carpels), style and stigma fused into column Ovary position: inferior Fruit type: capsule, with many tiny seeds “Liliaceae” Liliaceae sensu Cronquist are polyphyletic APG classifications split the traditional Liliaceae into over 15 different families “Liliaceae” 288 genera, 4,950 species Habit: Herbaceous, often with stem modifications “Liliaceae” http://www.wolffsapplehouse.com/spring_onionR.jpg Allium cepa Note: bulbs, adventitious roots, & http://wakawikiwiki.wikispaces.com/ sheathing leaves with parallel Allium sativum veins. “Liliaceae” 6 tepals 6 stamens Tulipa gesneriana “Liliaceae” Symmetry: radial Perianth parts: 6 tepals Stamens: 6 Pistils: 1, compound (3 carpels) Ovary position: superior Fruit type: capsule or berry .

Copy Link

Recommended publications

Liliaceae S.L. (Lily Family)
Liliaceae s.l. (Lily family) Photo: Ben Legler Photo: Hannah Marx Photo: Hannah Marx Lilium columbianum Xerophyllum tenax Trillium ovatum Liliaceae s.l. (Lily family) Photo: Yaowu Yuan Fritillaria lanceolata Ref.1 Textbook DVD KRR&DLN Erythronium americanum Allium vineale Liliaceae s.l. (Lily family) Herbs; Ref.2 Stems often modified as underground rhizomes, corms, or bulbs; Flowers actinomorphic; 3 sepals and 3 petals or 6 tepals, 6 stamens, 3 carpels, ovary superior (or inferior). Tulipa gesneriana Liliaceae s.l. (Lily family) “Liliaceae” s.l. (sensu lato: “in the broad sense”) - Lily family; 288 genera/4950 species, including Lilium, Allium, Trillium, Tulipa; This family is treated in a very broad sense in this class, as in the Flora of the Pacific Northwest. The “Liliaceae” s.l. taught in this class is not monophyletic. It is apparent now that the family should be treated in a narrower sense and some of the members should form their own families. Judd et al. recognize 15+ families: Agavaceae, Alliaceae, Amarylidaceae, Asparagaceae, Asphodelaceae, Colchicaceae, Dracaenaceae (Nolinaceae), Hyacinthaceae, Liliaceae, Melanthiaceae, Ruscaceae, Smilacaceae, Themidaceae, Trilliaceae, Uvulariaceae and more!!! (see web reading “Consider the Lilies”) Iridaceae (Iris family) Photo: Hannah Marx Photo: Hannah Marx Iris pseudacorus Iridaceae (Iris family) Photo: Yaowu Yuan Photo: Yaowu Yuan Sisyrinchium douglasii Sisyrinchium sp. Iridaceae (Iris family) Iridaceae - 78 genera/1750 species, Including Iris, Gladiolus, Sisyrinchium. Herbs, aquatic or terrestrial; Underground stems as rhizomes, bulbs, or corms; Leaves alternate, 2-ranked and equitant Ref.3 (oriented edgewise to the stem; Gladiolus italicus Flowers actinomorphic or zygomorphic; 3 sepals and 3 petals or 6 tepals; Stamens 3; Ovary of 3 fused carpels, inferior.
[Show full text]
"National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary."
Intro 1996 National List of Vascular Plant Species That Occur in Wetlands The Fish and Wildlife Service has prepared a National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary (1996 National List). The 1996 National List is a draft revision of the National List of Plant Species That Occur in Wetlands: 1988 National Summary (Reed 1988) (1988 National List). The 1996 National List is provided to encourage additional public review and comments on the draft regional wetland indicator assignments. The 1996 National List reflects a significant amount of new information that has become available since 1988 on the wetland affinity of vascular plants. This new information has resulted from the extensive use of the 1988 National List in the field by individuals involved in wetland and other resource inventories, wetland identification and delineation, and wetland research. Interim Regional Interagency Review Panel (Regional Panel) changes in indicator status as well as additions and deletions to the 1988 National List were documented in Regional supplements. The National List was originally developed as an appendix to the Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al.1979) to aid in the consistent application of this classification system for wetlands in the field.. The 1996 National List also was developed to aid in determining the presence of hydrophytic vegetation in the Clean Water Act Section 404 wetland regulatory program and in the implementation of the swampbuster provisions of the Food Security Act. While not required by law or regulation, the Fish and Wildlife Service is making the 1996 National List available for review and comment.
[Show full text]
Weed Risk Assessment for Iris Pseudacorus L. (Iridaceae)
Weed Risk Assessment for Iris United States pseudacorus L. (Iridaceae) – Yellow Department of flag iris Agriculture Animal and Plant Health Inspection Service September 24, 2013 Version 1 Left: Iris pseudacorus flower. Right: A colony of Iris pseudacorus (source: Bugwood, 2013). Agency Contact: Plant Epidemiology and Risk Analysis Laboratory Center for Plant Health Science and Technology Plant Protection and Quarantine Animal and Plant Health Inspection Service United States Department of Agriculture 1730 Varsity Drive, Suite 300 Raleigh, NC 27606 Weed Risk Assessment for Iris pseudacorus Introduction Plant Protection and Quarantine (PPQ) regulates noxious weeds under the authority of the Plant Protection Act (7 U.S.C. § 7701-7786, 2000) and the Federal Seed Act (7 U.S.C. § 1581-1610, 1939). A noxious weed is defined as “any plant or plant product that can directly or indirectly injure or cause damage to crops (including nursery stock or plant products), livestock, poultry, or other interests of agriculture, irrigation, navigation, the natural resources of the United States, the public health, or the environment” (7 U.S.C. § 7701-7786, 2000). We use weed risk assessment (WRA)— specifically, the PPQ WRA model (Koop et al., 2012)—to evaluate the risk potential of plants, including those newly detected in the United States, those proposed for import, and those emerging as weeds elsewhere in the world. Because the PPQ WRA model is geographically and climatically neutral, it can be used to evaluate the baseline invasive/weed potential of any plant species for the entire United States or for any area within it. As part of this analysis, we use a stochastic simulation to evaluate how much the uncertainty associated with the analysis affects the model outcomes.
[Show full text]
Download/Empfehlung-Invasive-Arten.Pdf
09-15078 rev FORMAT FOR A PRA RECORD (version 3 of the Decision support scheme for PRA for quarantine pests) European and Mediterranean Plant Protection Organisation Organisation Européenne et Méditerranéenne pour la Protection des Plantes Guidelines on Pest Risk Analysis Lignes directrices pour l'analyse du risque phytosanitaire Decision-support scheme for quarantine pests Version N°3 PEST RISK ANALYSIS FOR LYSICHITON AMERICANUS HULTÉN & ST. JOHN (ARACEAE) Pest risk analyst: Revised by the EPPO ad hoc Panel on Invasive Alien Species Stage 1: Initiation The EWG was held on 2009-03-25/27, and was composed of the following experts: - Ms Beate Alberternst, Projektgruppe Biodiversität und Landschaftsökologie ([email protected]) - M. Serge Buholzer, Federal Department of Economic Affairs DEA ([email protected]) - M. Manuel Angel Duenas, CEH Wallingford ([email protected]) - M. Guillaume Fried, LNPV Station de Montpellier, SupAgro ([email protected]), - M. Jonathan Newman, CEH Wallingford ([email protected]), - Ms Gritta Schrader, Julius Kühn Institut (JKI) ([email protected]), - M. Ludwig Triest, Algemene Plantkunde en Natuurbeheer (APNA) ([email protected]) - M. Johan van Valkenburg, Plant Protection Service ([email protected]) 1 What is the reason for performing the Lysichiton americanus originates from the pacific coastal zone of Northwest-America PRA? and was imported into the UK at the beginning of the 20th century as a garden ornamental, and has since been sold in many European countries, including southern 1 09-15078 rev countries like Italy. It is now found in 11 European countries. The species has been observed to reduce biodiversity in the Taunus region in Germany.
[Show full text]
Outline of Angiosperm Phylogeny
Outline of angiosperm phylogeny: orders, families, and representative genera with emphasis on Oregon native plants Priscilla Spears December 2013 The following listing gives an introduction to the phylogenetic classification of the flowering plants that has emerged in recent decades, and which is based on nucleic acid sequences as well as morphological and developmental data. This listing emphasizes temperate families of the Northern Hemisphere and is meant as an overview with examples of Oregon native plants. It includes many exotic genera that are grown in Oregon as ornamentals plus other plants of interest worldwide. The genera that are Oregon natives are printed in a blue font. Genera that are exotics are shown in black, however genera in blue may also contain non-native species. Names separated by a slash are alternatives or else the nomenclature is in flux. When several genera have the same common name, the names are separated by commas. The order of the family names is from the linear listing of families in the APG III report. For further information, see the references on the last page. Basal Angiosperms (ANITA grade) Amborellales Amborellaceae, sole family, the earliest branch of flowering plants, a shrub native to New Caledonia – Amborella Nymphaeales Hydatellaceae – aquatics from Australasia, previously classified as a grass Cabombaceae (water shield – Brasenia, fanwort – Cabomba) Nymphaeaceae (water lilies – Nymphaea; pond lilies – Nuphar) Austrobaileyales Schisandraceae (wild sarsaparilla, star vine – Schisandra; Japanese
[Show full text]
Wildflower Talk
Wildflower Talk These are a series of short articles written by Kristen Currin of Humble Roots Native Plant Nursery in Mosier, Oregon, featuring plants from around the Columbia Gorge. Each of these articles appeared in an issue of the Wasco County Soil and Water Conservation District’s newsletter, GROUNDWORK. I hope you enjoy them. All photos are courtesy of Kristen Currin. Please ask permission before using. www.humblerootsnursery.com Nothing in this document is to be construed as medical advice. A licensed herbalist should be consulted for proper identification and preparation before eating those plants designated as edible. Humble Roots Nursery nor the Conservation District are liable for improper consumption of plants listed in this document. INDEX Arnica, Heart-Leaf Glacier Lily Phlox, Cushion Bachelor Buttons Goldenrod Pineapple Weed Balsamroot Grass Widow Prairie Stars Bitterroot Indian Hemp Rabbitbrush (sp) Buckwheat, Arrowleaf Juniper Rabbitbrush, Gray Buckwheat, Snow Larkspur, Upland Rose, Wild California Poppy Kinnickinick Saxifrage Cattail Mariposa Lily Serviceberry Ceanothus Milkweed, Showy Shooting Star, Poet’s Chocolate Lily Miner’s Lettuce Sumac, Smooth Columbia Coreopsis Mugwort, Western Wapato Currant, Golden Native Shrubs Washington Lily Dutchman’s Breeches Nettle, Stinging Western Bunchberry Desert Parsley, Columbia Oceanspray Yellow Bee Plant Desert Parsley, Gray’s Oregon Grape Yellow Bells Elderberry, Blue Pearly Everlasting Yellow Star Thistle Gairdners Yampah Phantom Orchid 1 TOP Page Heart-leaf Arnica Arnica cordifolia Look for arnica's yellow flowers in spring. Arnica is an important native medicinal plant used topically to soothe sore muscles and sprains. A woodland plant and a good choice for the shady xeric garden. Bachelor Buttons, Cornflower Centaurea cyanus Many may think this beautiful blue flower is a native plant due to the fact that it dominates many of our meadows and is commonly sold in wildflower seed mixes.
[Show full text]
Introduction to Common Native & Invasive Freshwater Plants in Alaska
Introduction to Common Native & Potential Invasive Freshwater Plants in Alaska Cover photographs by (top to bottom, left to right): Tara Chestnut/Hannah E. Anderson, Jamie Fenneman, Vanessa Morgan, Dana Visalli, Jamie Fenneman, Lynda K. Moore and Denny Lassuy. Introduction to Common Native & Potential Invasive Freshwater Plants in Alaska This document is based on An Aquatic Plant Identification Manual for Washington’s Freshwater Plants, which was modified with permission from the Washington State Department of Ecology, by the Center for Lakes and Reservoirs at Portland State University for Alaska Department of Fish and Game US Fish & Wildlife Service - Coastal Program US Fish & Wildlife Service - Aquatic Invasive Species Program December 2009 TABLE OF CONTENTS TABLE OF CONTENTS Acknowledgments ............................................................................ x Introduction Overview ............................................................................. xvi How to Use This Manual .................................................... xvi Categories of Special Interest Imperiled, Rare and Uncommon Aquatic Species ..................... xx Indigenous Peoples Use of Aquatic Plants .............................. xxi Invasive Aquatic Plants Impacts ................................................................................. xxi Vectors ................................................................................. xxii Prevention Tips .................................................... xxii Early Detection and Reporting
[Show full text]
Understanding the Origin and Rapid Diversification of the Genus Anthurium Schott (Araceae), Integrating Molecular Phylogenetics, Morphology and Fossils
University of Missouri, St. Louis IRL @ UMSL Dissertations UMSL Graduate Works 8-3-2011 Understanding the origin and rapid diversification of the genus Anthurium Schott (Araceae), integrating molecular phylogenetics, morphology and fossils Monica Maria Carlsen University of Missouri-St. Louis, [email protected] Follow this and additional works at: https://irl.umsl.edu/dissertation Part of the Biology Commons Recommended Citation Carlsen, Monica Maria, "Understanding the origin and rapid diversification of the genus Anthurium Schott (Araceae), integrating molecular phylogenetics, morphology and fossils" (2011). Dissertations. 414. https://irl.umsl.edu/dissertation/414 This Dissertation is brought to you for free and open access by the UMSL Graduate Works at IRL @ UMSL. It has been accepted for inclusion in Dissertations by an authorized administrator of IRL @ UMSL. For more information, please contact [email protected]. Mónica M. Carlsen M.S., Biology, University of Missouri - St. Louis, 2003 B.S., Biology, Universidad Central de Venezuela – Caracas, 1998 A Thesis Submitted to The Graduate School at the University of Missouri – St. Louis in partial fulfillment of the requirements for the degree Doctor of Philosophy in Biology with emphasis in Ecology, Evolution and Systematics June 2011 Advisory Committee Peter Stevens, Ph.D. (Advisor) Thomas B. Croat, Ph.D. (Co-advisor) Elizabeth Kellogg, Ph.D. Peter M. Richardson, Ph.D. Simon J. Mayo, Ph.D Copyright, Mónica M. Carlsen, 2011 Understanding the origin and rapid diversification of the genus Anthurium Schott (Araceae), integrating molecular phylogenetics, morphology and fossils Mónica M. Carlsen M.S., Biology, University of Missouri - St. Louis, 2003 B.S., Biology, Universidad Central de Venezuela – Caracas, 1998 Advisory Committee Peter Stevens, Ph.D.
[Show full text]
Scanned Document
~ l ....... , .,. ... , •• 1 • • .. ,~ . · · . , ' .~ . .. , ...,.,, . ' . __.... ~ •"' --,~ ·- ., ......... J"'· ·····.-, ... .,,,.."" ............ ,... ....... .... ... ,,··~·· ....... v • ..., . .......... ,.. •• • ..... .. .. ... -· . ..... ..... ..... ·- ·- .......... .....JkJ(o..... .. I I ..... D · . ··.·: \I••• . r .• ! .. THE SPECIES IRIS STUDY GROUP OF THE AMERICAN IRIS SOCIETY \' -... -S:IGNA SPECIES IRIS GROUP OF NORTH AMERICA APRIL , 1986 NO. 36 OFFICERS CHAIRMAN: Elaine Hulbert Route 3, Box 57 Floyd VA 24091 VICE--CHAI.RMAN: Lee Welsr, 7979 W. D Ave. ~<alamazoo MI 4900/i SECRETARY: Florence Stout 150 N. Main St. Lombard, IL 6014~ TREASURER: Gene Opton 12 Stratford Rd. Berkelew CA 9470~ SEED EXCHANGE: Merry&· Dave Haveman PO Box 2054 Burling~rne CA 94011 -RO:E,IN DIRECTOR: Dot HuJsak 3227 So. Fulton Ave. Tulsc1, OK 74135 SLIDE DIRECTO~: Colin Rigby 2087 Curtis Dr . Penngrove CA 9495~ PUBLICATIONS SALES: Alan McMu~tr1e 22 Calderon Crescent Willowdale, Ontario, Canada M2R 2E5 SIGNA EDITOR : .Joan Cooper 212 W. Count~ Rd. C Roseville MN 55113 SIGNA PUBLISl-!ER:. Bruce Richardson 7 249 Twenty Road, RR 2 Hannon, Ontario, Canada L0R !Pe CONTENTS--APRIL, 1986--NO. 36 CHAIRMAN'S MESSAGE Elaine HL\l ber t 1261 PUBLICATI~NS AVAILABLE Al an McMwn tr ie 12c)1 SEED EXCHANGE REPORT David & Merry Haveman 1262 HONORARY LIFE MEMBERSHIPS El a ine? HLtlbert 1263 INDEX REPORTS Eric Tankesley-Clarke !263 SPECIES REGISTRATIONS--1985 Jean Witt 124-4' - SLIDE COLLECTION REPORT Col in Rigby 1264 TREASURER'S REPORT Gene (>pton 1264, NOMINATING COMMITTEE REPORT Sharon McAllister 1295 IRIS SOURCES UPDATE Alan McMurtrie 1266 QUESTIONS PLEASE '-Toan Cooper 1266 NEW TAXA OF l,P,IS L . FROM CHINA Zhao Yu·-· tang 1.26? ERRATA & ADDENDA ,Jim Rhodes 1269 IRIS BRAI\ICHil\iG IN TWO MOl~E SPECIES Jean Witt 1270 TRIS SPECIES FOR SHALLOW WATER Eberhard Schuster 1271 JAPANESE WILD IRISES Dr.
[Show full text]
These De Doctorat De L'universite Paris-Saclay
NNT : 2016SACLS250 THESE DE DOCTORAT DE L’UNIVERSITE PARIS-SACLAY, préparée à l’Université Paris-Sud ÉCOLE DOCTORALE N° 567 Sciences du Végétal : du Gène à l’Ecosystème Spécialité de doctorat (Biologie) Par Mlle Nour Abdel Samad Titre de la thèse (CARACTERISATION GENETIQUE DU GENRE IRIS EVOLUANT DANS LA MEDITERRANEE ORIENTALE) Thèse présentée et soutenue à « Beyrouth », le « 21/09/2016 » : Composition du Jury : M., Tohmé, Georges CNRS (Liban) Président Mme, Garnatje, Teresa Institut Botànic de Barcelona (Espagne) Rapporteur M., Bacchetta, Gianluigi Università degli Studi di Cagliari (Italie) Rapporteur Mme, Nadot, Sophie Université Paris-Sud (France) Examinateur Mlle, El Chamy, Laure Université Saint-Joseph (Liban) Examinateur Mme, Siljak-Yakovlev, Sonja Université Paris-Sud (France) Directeur de thèse Mme, Bou Dagher-Kharrat, Magda Université Saint-Joseph (Liban) Co-directeur de thèse UNIVERSITE SAINT-JOSEPH FACULTE DES SCIENCES THESE DE DOCTORAT DISCIPLINE : Sciences de la vie SPÉCIALITÉ : Biologie de la conservation Sujet de la thèse : Caractérisation génétique du genre Iris évoluant dans la Méditerranée Orientale. Présentée par : Nour ABDEL SAMAD Pour obtenir le grade de DOCTEUR ÈS SCIENCES Soutenue le 21/09/2016 Devant le jury composé de : Dr. Georges TOHME Président Dr. Teresa GARNATJE Rapporteur Dr. Gianluigi BACCHETTA Rapporteur Dr. Sophie NADOT Examinateur Dr. Laure EL CHAMY Examinateur Dr. Sonja SILJAK-YAKOVLEV Directeur de thèse Dr. Magda BOU DAGHER KHARRAT Directeur de thèse Titre : Caractérisation Génétique du Genre Iris évoluant dans la Méditerranée Orientale. Mots clés : Iris, Oncocyclus, région Est-Méditerranéenne, relations phylogénétiques, status taxonomique. Résumé : Le genre Iris appartient à la famille des L’approche scientifique est basée sur de nombreux Iridacées, il comprend plus de 280 espèces distribuées outils moléculaires et génétiques tels que : l’analyse de à travers l’hémisphère Nord.
[Show full text]
Skunk Cabbage Guide
New York City EcoFlora Symplocarpus foetidus (L.) Salisb. ex W.P.C. Barton Skunk Cabbage Description: Perennial herbs from thickened vertical rhizomes and numerous fleshy roots with contractile rings; leaves crowded at the apex of the rhizome, appearing after the flowers, on short petioles, the blades fleshy, bright green, hairless, ovate or elliptic, 2 feet long and 1 foot wide (50 × 30 cm), reticulate veined, malodorous when crushed; inflorescences produced in winter; outer covering (spathe) mottled maroon and yellow-green, bulbous at the base, curved and twisted, tapering to a point; floral stalk (spadix) inside the spathe, globose, producing crowded bisexual flowers; fruit a mass of fused ovaries, 2–4 inches long (8 cm), developing slowly through the year, turning black and ripening in fall; seeds to 1/4 to 1/2 inches wide (1 cm). Where Found: Native to North America from Nova Scotia to Minnesota, south in the Appalachians to Georgia; swamps and wet woods in saturated soils; most abundant in New York City on Staten Island and in the Bronx, uncommon in Brooklyn, Queens and Manhattan. The plants are important for preventing erosion and maintaining water quality. Natural History: The perennial stem of the plant is an enlarged, starchy, underground organ called a rhizome. Rope-like contractile roots anchor the plant and pull the growing rhizome firmly into the muck. Dandelions (Taraxacum officinale), another rosette forming plant with starchy rhizomes and contractile roots is subject to grazing pressure and protects the growing crown (meristems) by maintaining it below the soil surface safely out of reach from grazing animals.
[Show full text]
Iris Pseudacorus L
Plant Guide status (e.g., threatened or endangered species, state PALEYELLOW IRIS noxious status, and wetland indicator values). Paleyellow iris is listed as an invasive, banned, prohibited, Iris pseudacorus L. designated, or noxious weed in Connecticut, Plant Symbol = IRPS Massachusetts, Montana, New Hampshire, Oregon, and Washington. Contributed by: USDA NRCS Montana State Office Weediness This plant may become weedy or invasive in some regions or habitats and may displace desirable vegetation if not properly managed. Please consult with your local NRCS Field Office, Cooperative Extension Service office, state natural resource, or state agriculture department regarding its status and use. Weed information is also available from the PLANTS Web site at http://plants.usda.gov. Please consult the Related Web Sites on the Plant Profile for this species for further information. This species is weedy in many riparian habitats. Description General: Paleyellow iris is perennial and grows from a stout rhizome ranging in diameter from 0.4 to 1.6 inches (1-4 centimeters). The sap of the rhizome is black. Roots are normally four to eight inches (10-20 centimeters) long, but may reach lengths of 12 inches (30 centimeters). The hairless (glabrous) plants form clones when rhizomes separate. Each individual (ramet) produces 10 leaves covered with a fine waxy powder giving the leaves a whitish or bluish (glaucous) cast. The sword-shaped leaves have a raised midrib and are about 0.4 to 1.2 inches (10-30 centimeters) wide. Leaves range from 20 to 40 inches (50-100 centimeters) in length, or about as long as Figure 1.
[Show full text]