Acer Davidii

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All the knowledge. Almost all of the trees. https://www.vdberk.co.uk/trees/acer-davidii/ Acer davidii Height 8 - 12 (15) m Crown oval to round, light, open crown, capricious growing Bark and branches twigs purple with greyish white longitudinal stripes Leaf oval to elongated, dark green, 8 - 16 cm Autumn colour yellow, orange, red Flowers pendent corymb-shaped racemes, light yellow, May Fruits single-seeded, single-winged, light green Spines/thorns None Toxicity usually not toxic to people, (large) pets and livestock Soil type all soils Paving tolerates no paving Winter hardiness zone 6a (-23,3 to -20,6 °C) Wind resistance good Other resistances resistant to frost (WH 1 - 6), can withstand wind Fauna tree resistant to frost (WH 1 - 6), can withstand wind, valuable for butterflies Application parks, tree containers, cemeteries, roof gardens, large gardens Shape clearstem tree, multi-stem treem Origin Central China Because of its conspicuously striped bark A. davidii, together with A. capillipes and A. rufinerve, belong to the so-called “Snake Bark maples”. The young twigs are dark purple- red and retain this colour during winter. The older twigs and stem have conspicuously greyish white longitudinal stripes. The leaves are less prominently lobed and unlike A. capillipes the leaves of A. davidii are hairy on the under surface along the veins. The leaf of young plants is ternate, those of older trees do not have lobes. The flowers are unisexual, male and female flowers appear on one plant. The plant has a strongly branched and compact root system. The application of the plant is restricted to parks and larger gardens because it is less suitable for use in hard surfaces. This decorative tree will also stand out well in green borders. © Copyright Boomkwekerij Gebr. Van den Berk B.V. 2021.

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Junker's Nursery

1 JUNKER’S NURSERY LTD 2011-2012 Higher Cobhay (01823) 400075 Milverton Somerset E-mail: [email protected] TA4 1NJ Website: www.junker.co.uk See website for more detail: www.junker.co.uk elcome to a new look catalogue. Mind you, the catalogue is season, but if that means planting at a time of year when the plants have2 the least of the changes this year! We have finally completed best chance of success, then that can only be a good thing. I would en- W our relocation to our new site. Although we have owned it courage you therefore to make your plans and reserve your plants for for nearly 4 years now, personal circumstances intervened and it has when we can lift them. Typically we start this in mid-October. The taken longer to complete the move than we anticipated. It was definitely plants don’t need to have completely lost their leaves, but they do need worth the wait though (even if the rain is streaming down the windows to have finished active growth for the season. We will then continue lift- yet again, even as I write this in late July!) So much is different that it’s ing right through until March or so, but late planting can be risky in the difficult to know where to start...what remains unchanged however is our event of a dry spring such as we’ve had the last couple of years. Lifting commitment to growing the most exciting plants to the best of our abil- is weather dependant though, as we can’t continue if everything is water- ity, and to giving you, the customer, the kind of personal service that logged or frozen solid.
2. ACER Linnaeus, Sp. Pl. 2: 1054. 1753. 枫属 Feng Shu Trees Or Shrubs

Fl. China 11: 516–553. 2008. 2. ACER Linnaeus, Sp. Pl. 2: 1054. 1753. 枫属 feng shu Trees or shrubs. Leaves mostly simple and palmately lobed or at least palmately veined, in a few species pinnately veined and entire or toothed, or pinnately or palmately 3–5-foliolate. Inflorescence corymbiform or umbelliform, sometimes racemose or large paniculate. Sepals (4 or)5, rarely 6. Petals (4 or)5, rarely 6, seldom absent. Stamens (4 or 5 or)8(or 10 or 12); filaments distinct. Carpels 2; ovules (1 or)2 per locule. Fruit a winged schizocarp, commonly a double samara, usually 1-seeded; embryo oily or starchy, radicle elongate, cotyledons 2, green, flat or plicate; endosperm absent. 2n = 26. About 129 species: widespread in both temperate and tropical regions of N Africa, Asia, Europe, and Central and North America; 99 species (61 endemic, three introduced) in China. Acer lanceolatum Molliard (Bull. Soc. Bot. France 50: 134. 1903), described from Guangxi, is an uncertain species and is therefore not accepted here. The type specimen, in Berlin (B), has been destroyed. Up to now, no additional specimens have been found that could help clarify the application of this name. Worldwide, Japanese maples are famous for their autumn color, and there are over 400 cultivars. Also, many Chinese maple trees have beautiful autumn colors and have been cultivated widely in Chinese gardens, such as Acer buergerianum, A. davidii, A. duplicatoserratum, A. griseum, A. pictum, A. tataricum subsp. ginnala, A. triflorum, A. truncatum, and A. wilsonii. In winter, the snake-bark maples (A. davidii and its relatives) and paper-bark maple (A.
Acer Buergerianum Plants, Adequately Moist in Summer but Well Drained in Winter Is "Trident Maple" a Pretty Small Tree Whose Grace Is Enhanced by the Key to Success

Acer buergerianum plants, adequately moist in summer but well drained in winter is "Trident Maple" A pretty small tree whose grace is enhanced by the key to success. 3m. the small three-lobed leaves. Particularly good autumn colour begins scarlet turning orange-yellow. A good hardy Maple Acer x conspicuum 'Silver Cardinal' tolerant of many less favoured sites. 4m. This Snakebark has the most incredible pink and cream variegated foliage, highlighted by the red petioles and young stems. It Acer circinatum 'Monroe' occurred as a chance seedling of A. pensylvanicum and received A plant I've lusted after for years! Shrubby habit, with deeply an Award of Merit in 1985. Our stock is directly derived from incised light green leaves (even more so than A. japonicum the original seedling in the Windsor Great Park. Unless your soil 'Aconitifolium'). Predominantly yellow autumn colours may is very good, it is safest in dappled shade. 3m. develop some orange. Worthy of a special site. 3m. Acer x conspicuum 'Silver Vein' Acer circinatum 'Pacific Fire' A hybrid between A. davidii George Forrest and A. Imagine the coral bark colour of Acer palmatum 'Sangokaku' pensylvanicum Erythrocladum found at Hilliers about 1960. It is combined with the larger leaves and more tolerant growth arguably the best of the basic snakebarks for garden suitability requirements of this species, and the result is a plant with and good colour with its rich purple and white striped winter awesome potential. Fantastic autumn colour too. bark, becoming green with maturity. 5m. Acer circinatum 'Sunglow' Acer davidii This has been on my "wanted" list ever since I first saw it Delightful small tree noted for dazzling autumn colour and photographed! Apricot coloured young growth matures to attractive white striped purple bark in winter.
Abies Concolor (White Fir)

Compiled here is distribution, characteristics and other information on host species featured as ‘Host of the Month’ in past issues of the COMTF Monthly Report. Abies concolor (white fir) This is an evergreen tree native to the mountains of southern Oregon, California, the southern Rocky Mountains, and Baja California. Large and symmetrical, white fir grows 80 – 120ft tall and 15 – 20ft wide in its native range and in the Pacific Northwest. White fir is one of the top timber species found in the Sierra Nevada Mountains of CA and is a popular Christmas tree, as well as one of the most commonly grown native firs in Western gardens. Young trees are conical in shape, but develop a dome-like crown with age. The flattened needles of white fir are silvery blue-green, blunt at the tip , and grow 2 – 3in long. Often curving upwards, the needles extend at right angles from the twig, and twigs produce a citrus smell when needles are broken. White fir is monoecious, producing yellow- to red-toned, catkin-like male flowers and inconspicuous yellow-brown female flowers. The oblong cones grow 3 – 5 in upright, are yellow-green to purple in color, and are deciduous at maturity, dispersing seed in the fall. New twigs are dark- orange, but become gray-green, then gray with maturity. The bark of saplings is thin, smooth, and gray, turning thick, ash-gray with age, and developing deep irregular furrows. P. ramorum- infected Abies concolor (white fir) was first reported in the October 2005 COMTF newsletter as having been found at a Christmas tree farm in the quarantined county of Santa Clara.
Wa Shan – Emei Shan, a Further Comparison

photograph © Zhang Lin A rare view of Wa Shan almost minus its shroud of mist, viewed from the Abies fabri forested slopes of Emei Shan. At its far left the mist-filled Dadu River gorge drops to 500-600m. To its right the 3048m high peak of Mao Kou Shan climbed by Ernest Wilson on 3 July 1903. “As seen from the top of Mount Omei, it resembles a huge Noah’s Ark, broadside on, perched high up amongst the clouds” (Wilson 1913, describing Wa Shan floating in the proverbial ‘sea of clouds’). Wa Shan – Emei Shan, a further comparison CHRIS CALLAGHAN of the Australian Bicentennial Arboretum 72 updates his woody plants comparison of Wa Shan and its sister mountain, World Heritage-listed Emei Shan, finding Wa Shan to be deserving of recognition as one of the planet’s top hotspots for biological diversity. The founding fathers of modern day botany in China all trained at western institutions in Europe and America during the early decades of last century. In particular, a number of these eminent Chinese botanists, Qian Songshu (Prof. S. S. Chien), Hu Xiansu (Dr H. H. Hu of Metasequoia fame), Chen Huanyong (Prof. W. Y. Chun, lead author of Cathaya argyrophylla), Zhong Xinxuan (Prof. H. H. Chung) and Prof. Yung Chen, undertook their training at various institutions at Harvard University between 1916 and 1926 before returning home to estab- lish the initial Chinese botanical research institutions, initiate botanical exploration and create the earliest botanical gardens of China (Li 1944). It is not too much to expect that at least some of them would have had personal encounters with Ernest ‘Chinese’ Wilson who was stationed at the Arnold Arboretum of Harvard between 1910 and 1930 for the final 20 years of his life.
Download PCN-Acer-2017-Holdings.Pdf

PLANT COLLECTIONS NETWORK MULTI-INSTITUTIONAL ACER LIST 02/13/18 Institutional NameAccession no.Provenance* Quan Collection Id Loc.** Vouchered Plant Source Acer acuminatum Wall. ex D. Don MORRIS Acer acuminatum 1994-009 W 2 H&M 1822 1 No Quarryhill BG, Glen Ellen, CA QUARRYHILL Acer acuminatum 1993.039 W 4 H&M1822 1 Yes Acer acuminatum 1993.039 W 1 H&M1822 1 Yes Acer acuminatum 1993.039 W 1 H&M1822 1 Yes Acer acuminatum 1993.039 W 1 H&M1822 1 Yes Acer acuminatum 1993.076 W 2 H&M1858 1 No Acer acuminatum 1993.076 W 1 H&M1858 1 No Acer acuminatum 1993.139 W 1 H&M1921 1 No Acer acuminatum 1993.139 W 1 H&M1921 1 No UBCBG Acer acuminatum 1994-0490 W 1 HM.1858 0 Unk Sichuan Exp., Kew BG, Howick Arb., Quarry Hill ... Acer acuminatum 1994-0490 W 1 HM.1858 0 Unk Sichuan Exp., Kew BG, Howick Arb., Quarry Hill ... Acer acuminatum 1994-0490 W 1 HM.1858 0 Unk Sichuan Exp., Kew BG, Howick Arb., Quarry Hill ... UWBG Acer acuminatum 180-59 G 1 1 Yes National BG, Glasnevin Total of taxon 18 Acer albopurpurascens Hayata IUCN Red List Status: DD ATLANTA Acer albopurpurascens 20164176 G 1 2 No Crug Farm Nursery QUARRYHILL Acer albopurpurascens 2003.088 U 1 1 No Total of taxon 2 Acer amplum (Gee selection) DAWES Acer amplum (Gee selection) D2014-0117 G 1 1 No Gee Farms, Stockbridge, MI 49285 Total of taxon 1 Acer amplum 'Gold Coin' DAWES Acer amplum 'Gold Coin' D2015-0013 G 1 2 No Gee Farms, Stockbridge, MI 49285, USA Acer amplum 'Gold Coin' D2017-0075 G 2 2 No Shinn, Edward T., Wall Township, NJ 07719-9128 Total of taxon 3 Acer argutum Maxim.
Acer Barbinerve Acer Buergeranum Acer Buergeranum 'Miyasama

Acer barbinerve Acer pal. 'Aka kawa hime' Acer buergeranum Acer pal. 'Akane' Acer buergeranum 'Miyasama yatsubusa' Acer pal. 'Aka Shigatatsu Sawa' Acer buergeranum 'Mino yatsubusa' Acer pal. 'Akita yatsubusa' Acer buergeranum 'Naruto' Acer pal. 'Alpine Sunrise' Acer campbellii flabellatum Acer pal. 'Aoba-jo' Acer campestre 'Carnival' Acer pal. 'Ao kanzashi' Acer campestre 'Postelense Acer pal. 'Ao meshime no uchi' Acer capillipes 'Morifolium' Acer pal. 'Ao shime-no-uchi shidare' Acer cappadocicum divergens Acer pal. 'Aoyagi Acer carpinifolium Acer pal. 'Arakawa' Acer caudatum ssp ukurunduense Acer pal. 'Aratama' Acer circinatum Acer pal. 'Ariake-nomura' Acer circinatum 'Monroe' Acer pal. 'Asahi Zuru' Acer conspicuum 'Mozart' Acer pal. 'Atrolineare' Acer conspicuum 'Red Flamingo' Acer pal. f. atropurpureum Acer conspicuum 'Silver Cardinal' Acer pal. 'Atropurpureum Novum' Acer conspicuum 'Silver Ghost' Acer pal. 'Aureum' Acer crataegifolium 'Me uri keade no' Acer pal. 'Azuma murasaki' Acer crataegifolium 'Me uri no ofu' Acer pal. 'Baby Lace' Acer crataegifolium 'Veitchii' Acer pal. 'Beni gasa' Acer davidii 'Cantonspark' Acer pal. 'Beni hime' Acer davidii 'George Forrest' Acer pal, 'Beni hoshi' Acer davidii 'Hagelunie' Acer pal. 'Beni -kagami' Acer davidii 'Karmen' Acer pal. 'Beni kawa' Acer davidii 'Madeline Spitta' Acer pal. 'Beni komachi' Acer davidii Acer pal. 'Beni maiko' Acer forrestii 'Alice' Acer pal. 'Beni-musume' Acer 'Griseum' Acer pal. 'Beni otaki' Acer jap. 'Aconitifolium' Acer pal. 'Beni otome' Acer jap. 'Attaryi' Acer pal. 'Beni shidare' Acer jap. 'Green Cascade' Acer pal. 'Beni schichihenge' Acer jap. 'Meigetsu' Acer pal. 'Beni shi en' Acer jap. 'O isami' Acer pal. 'Beni tsukasa' Acer jap. 'Vitifolium' Acer pal. 'Beni ubi gohon' Acer mandshuricum Acer pal.
Plant Collecting on Wudang Shan

Plant on Shan Collecting Wudang , Peter Del Tredici, Paul Meyer, Hao Riming, Mao Cailiang, " Kevin Conrad, and R. William Thomas . American and Chinese botanists describe the locales and vegetation encountered during a few key days of their expedition to China’s Northern Hubei Province. From September 4 to October 11, 1994, repre- north as Wudang Shan. He did, however, visit sentatives from four botanical gardens in the the town of Fang Xian, about fifty kilometers to United States, together with botanists from the southwest. * The first systematic study of the Nanjing Botanical Garden, participated the flora of Wudang Shan was done in 1980 by a in a collecting expedition on Wudang Shan team of botanists from Wuhan University, who (shan=mountain) in Northern Hubei Province, made extensive herbarium collections. In the China. The American participants were from spring of 1983, the British plant collector Roy member institutions of the North American- Lancaster visited the region with a group of China Plant Exploration Consortium (NACPEC),), tourists, making him the first Western botanist a group established in 1991 to facilitate the ex- to explore the mountain (Lancaster, 1983, 1989).). change of both plant germplasm and scientific Wudang Shan is famous throughout China as information between Chinese and North an important center of Ming Dynasty Taoism. American botanical institutions. Over five hundred years ago, about three hun- Paul Meyer, director of the Morris Arbore- dred thousand workers were employed on the tum, led the expedition. He was joined by Kevin mountain building some forty-six temples, Conrad from the U.S. National Arboretum, seventy-two shrines, thirty-nine bridges, and Peter Del Tredici from the Arnold Arboretum, twelve pavilions, many of which are still stand- and Bill Thomas from Longwood Gardens.
Comparative Plastome Analyses and Phylogenetic Applications of the Acer Section Platanoidea

Article Comparative Plastome Analyses and Phylogenetic Applications of the Acer Section Platanoidea Tao Yu 1, Jian Gao 2, Bing-Hong Huang 3, Buddhi Dayananda 4 , Wen-Bao Ma 5, Yu-Yang Zhang 1, Pei-Chun Liao 3,* and Jun-Qing Li 1,* 1 Forestry College, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, China; [email protected] (T.Y.); [email protected] (Y.-Y.Z.) 2 Faculty of Resources and Environment, Baotou Teachers’ College, No.3, Kexue Rd., BaoTou, Inner Mongolia 014030, China; [email protected] 3 School of Life Science, National Taiwan Normal University, No. 88, Sec. 4, TingChow Rd., Wunshan Dist., Taipei 116, Taiwan; [email protected] 4 School of Agriculture and Food Sciences, The University of Queensland, Brisbane QLD 4072, Australia; [email protected] 5 Key Laboratory of National Forestry and Grassland Administration on Sichuan Forest Ecology, Resources and Environment Sichuan Academy of Forestry, Chengdu 610081, China; [email protected] * Correspondence: [email protected] (P.-C.L.); [email protected] (J.-Q.L.); Tel.: +886-2-77346330 (P.-C.L.) Received: 17 March 2020; Accepted: 16 April 2020; Published: 19 April 2020 Abstract: The Acer L. (Sapindaceae) is one of the most diverse and widespread genera in the Northern Hemisphere. Section Platanoidea harbours high genetic and morphological diversity and shows the phylogenetic conflict between A. catalpifolium and A. amplum. Chloroplast (cp) genome sequencing is efficient for the enhancement of the understanding of phylogenetic relationships and taxonomic revision. Here, we report complete cp genomes of five species of Acer sect.
Frawley Poster (NHRE 2016)

A Nuclear and Chloroplast Phylogeny of Maple Trees (Acer L.) and their close relatives (Hippocastanodeae, Sapindaceae) Emma Frawley1,2, AJ Harris2, Jun Wen2 1 Department of Environmental Studies, Bucknell University 2 Department of Botany, National Museum of Natural History INTRODUCTION: RESULTS AND DISCUSSION: Section Key: Acer carpinifolium Acer elegantulum A. Map Key: -/97Acer elegantulum B. Acer saccharum subsp. grandidentatum Acer pubipalmatum The primary goal of this study is to reconstruct a molecular phylogeny of the woody Palmata Acer elegantulum Acer pubipalmatum Acer hycranum Western North America Acer wuyangense Handeliodendron (Rehder) Acer wuyangense Handeliodendron Acer psuedosieboldianum Macrantha Acer campestre 99/100 Acer psuedosieboldianum trees and shrubs in Acer (L.), Dipteronia (Oliv.), the two members of the Acereae tribe, Acer miyabei subsp. miaotaiense Acer oliverianum 99 Acer oliverianum Rehder Platanoidea Acer saccharum subsp. floridatum Eastern North America Acer sp. - Hybrid AJ Harris Acer subsp. - US National Arboretum Acer sp. - Hybrid Acer sieboldianum and Aesculus (L.), Billia (Peyr.), and Handeliodendron (Rehder) of the Hippocastaneae Acer Acer diabolicum Acer sieboldianum Acer tataricum subsp. ginnala Acer sp. - Tibet Europe Acer sp. - Tibet Lithocarpa Acer tschonskii Acer sp. - Tibet Aesculus (L.) Acer pycnanthum Acer sp. - Tibet tribe. These ﬁve taxa make up the subfamily Hippocastanoideae in the family 98/100 Billia Peyr. Acer sacharinum Acer davidiiAcer davidii Ginnala Asia 98 Acer davidii Acer rubrum Acer davidii Sapindaceae. Acereae is especially interesting as it is a large, well-known, and Acer saccharum subsp. floridatum Acer crataegifolium Section Kevin Nixon Negundo 99/100Acer crataegifolium Acer griseum 99 Acer tegmentosum Acer triflorum Acer tegmentosum Trifoliata Acer triflorum 89/100 Acer miyabei subsp.
Systematics and Biogeography of Selected Modern and Fossil Dipteronia and Acer (Sapindaceae)

SYSTEMATICS AND BIOGEOGRAPHY OF SELECTED MODERN AND FOSSIL DIPTERONIA AND ACER (SAPINDACEAE) By AMY MARIE MCCLAIN A THESIS PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE UNIVERSITY OF FLORIDA 2000 Copyright 2000 by AMY MARIE MCCLAIN ACKNOWLEDGMENTS I would like to thank the many people who have helped me throughout the last few years. My committee chair, Steven R. Manchester, provided continual support and assistance in helping me become a better researcher. The members of my committee, David L. Dilcher and Walter S. Judd, have spent much time and effort teaching me in their areas of expertise. The University of Florida Herbarium (FLAS) staff, including Kent Perkins and Trudy Lindler, were of great assistance. I also thank the Harvard Herbarium (A, GH) staff, especially Emily Wood, David Boufford, Kancheepuram Gandhi, and Timothy Whitfeld, as well as those at the Beijing Herbarium (PE) and Zhiduan Chen, who helped to arrange my visit to China. I thank David Jarzen for help with the University of Florida fossil plant collections. I appreciate the access to fossil specimens provided to Steven Manchester and me by Amanda Ash, Melvin Ashwill, James Basinger, Lisa Barksdale, Richard Dillhoff, Thomas Dillhoff, Diane Erwin, Leo Hickey, Kirk Johnson, Linda Klise, Wesley Wehr, and Scott Wing. Thanks go to Richard and Thomas Dillhoff for providing measurements of additional fossil specimens. I especially thank my husband, Rob McClain, for his patience, help, and support, and my parents for their love and encouragement. This work was funded in part by a research assistantship from the Florida Museum of Natural History.
Uncommon and Special Trees to Promote Diversity in Yards, Parks, and Open Spaces San Francisco Urban Forestry Council Updated A

Uncommon and Special Trees to Promote Diversity in Yards, Parks, and Open Spaces San Francisco Urban Forestry Council Updated August 2016 San Francisco has a unique climate with multiple microclimates, where our open spaces (including parks, private yards, and open spaces under federal jurisdiction, such as the Presidio) present an opportunity to plant a wide variety of trees that are not yet common here. Many of these trees are not well suited as street trees, because they cannot tolerate compacted soils or their canopies or root systems cannot easily adapt to fit within street-side infrastructure. The following list of trees are considered well-adapted to San Francisco’s climate and conditions, but are under-represented in our open spaces. They present an opportunity for experimentation and improving San Francisco’s urban forestry diversity. Though some of these species may be difficult to find, the Urban Forestry Council recommends considering these species to add diversity to the urban forest. To view many of these trees in person, visit the plant collections at the Botanical Gardens at Strybing Arboretum. Size Evergreen/ Species Notes Deciduous Small - Evergreen Acer laevigatum Broad crown; semi -weeping (smooth maple or Nepal Less than 20’ maple) tall at maturity Alectryon excelsus Broad crown; small red fruits. Moderate (titoki) growth speed Carpodetus serratus Endemic to New Zealand (marbleleaf) Cussonia spicata Dramatic foliage texture Elaeocarpus decipiens Upright habit; tiny white flowers; blue - (Japanese blueberry tree) black fruits Leptospermum scoparium Broad, low crown; pink flowers; often ‘Helene Strybing’ multi-trunked (New Zealand tea tree) Melaleuca ericifolia Broad, dense crown; covered in white (swamp paperbark) flowers in early summer; attractive whitish peeling bark Meryta sinclairii Round headed; bold foliage texture (puka) Sophora microphylla & Rounded crown; yellow flowers Sophora tetraptera.