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Gravel Stairs Foot Bridge 11 Staff Only Suggested Maple Route 10 Green paths may be slippery and 12 may not be suitable for all guests. Rock Steps 13 STURDY SHOES with good tread are highly recommended for most trails. STAY ON THE PATH to help protect our conservation collection of rare and endangered plants. 9 8 5 6 7 14 4 1 Five-Lobed Maple (Acer pentaphyllum) 2 Evergreen Maple (Acer albopurpurascens) 1 3 Paperbark Maple (Acer griseum) 2 4 Kawakami Maple (Acer caudatifolium) 5 Full Moon Maple (Acer japonicum) 3 6 Redvein Maple (Acer rufinerve) Not all 7 Trident Maple (Acer buergerianum) Sexually Diverse maples 8 Henry’s Maple (Acer henryi) look like 9 Miyabe Maple (Acer miyabei) the Canadian flag. There 10 Siebold Maple (Acer sieboldianum) MAPLES 11 Snake Bark Maple (Acer morrisonense) are many different leaf Self-Guided Tour shapes and some are 12 Coliseum Maple (Acer cappadocicum subsp. sinicum) even evergreen! Sex, it’s not that simple. N 13 Japanese Maple (Acer palmatum) 14 Broad Maple (Acer amplum subsp. catalpifolium) sonomabg.org Plant Sex NT VU EN CR EW EX 1 Five-Lobed Maple LC NT VU EN CR EW EX 8 Henry’s Maple LC Most plants are hermaphrodites Acer pentaphyllum Acer henryi (a single flower has both male Native to Sichuan Province, China + Native to China + and female reproductive parts, Considered one of the rarest maples in the wild. Long drooping flower clusters. Great fall color aka perfect flowers ). Other and winter interest resembling bamboo. LC NT VU EN CR EW EX plants will have male flowers 2 Evergreen Maple Acer albopurpurascens Miyabe Maple LC NT VU EN CR EW EX ( ) and/or female 9 staminate Native to Taiwan + Acer miyabei (pistillate ) flowers. Evergreen unlike most maples. Bark is dark. Native to Japan Plants with male and female Several cultivars in Europe, but wild habitat flowers are monoecious + 3 Paperbark Maple LC NT VU EN CR EW EX (along streams) fragmented. (think of one of your arms being Acer griseum female and the other male). If an Native to central, eastern China + 10 Siebold Maple LC NT VU EN CR EW EX entire individual has only one Often produces non-viable seeds. Acer sieboldianum Native to Japan + flower sex, it is dioecious | . Some plants will only have Kawakami Maple LC NT VU EN CR EW EX Similar to A. palmatum, but underside of leaves 4 are hairy. Rare in cultivation outside Japan. perfect flowers and male flowers Acer caudatifolium Native to Taiwan + on the same plant (no female A snake bark maple. Reddish samaras turn tan 11 Snake Bark Maple LC NT VU EN CR EW EX flowers), these are when ripe. Acer morrisonense andromonoecious + . Rarely, Native to Taiwan plants can be androdioecious | 5 Full Moon Maple LC NT VU EN CR EW EX One of several species of maples known for some male plants and some Acer japonicum their snakeskin-like bark. hermaphrodites. There are even Native to Japan, Kuril Islands + LC NT VU EN CR EW EX plants that will change sex as Name for its full moon shaped leaves. Dark 12 Coliseum Maple Acer cappadocicum subsp. sinicum they age or depending on purple, drooping flower clusters in mid-spring. + growing conditions. Native to southwestern China + 6 Redvein Maple LC NT VU EN CR EW EX Samaras can create a red halo Maples Run the Gamut Acer rufinerve around trees in late spring, unusual for maples. Native to Japan + Maples (Acer spp.) have it all NT VU EN CR EW EX Japanese name translates to melon-skin maple. 13 Japanese Maple LC when it comes to sexual forms. Leaves have veins with red-rust colored hairs. Acer palmatum They can be male one year and Native to Korea, Japan, Taiwan + female the next, a little bit of 7 Trident Maple LC NT VU EN CR EW EX Hundreds of cultivars bred for spectacular both, or anything in between. Acer buergerianum fall colors. Huge variation in leaf and tree shape. The only consistency is maples Native to China, Japan, Taiwan + LC NT VU EN CR EW EX have winged fruits, like Popular for bonsai and a good choice for 14 Broad Maple whirly-gigs, called samaras. home gardens as it tolerates drought. Acer amplum subsp. catalpifolium Native to China, Vietnam + SBG has one of the only specimens in LC Least Concern NT Near Threatened cultivation in North America. VU Vulnterable EN Endangered CR EW Red List Red IUCN Critically Endangered Extinct in the Wild.
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    Japanese Maples – Acer Spp

    Japanese Maples – Acer spp. Known for their astounding variety in color, texture and habit, Japanese Maples are easygoing and adaptable and belong in every garden. If you already have one, think about adding another! for every site, a japanese maple! • Botanists count twenty-three species to include under the common heading of Japanese Maple. The largest group is Acer palmatum and its cultivars, followed by Acer japonicum. The numerous cultivars of Acer palmatum are further divided into seven groups which are mostly defined by leaf-shape. • In addition to variation in leaf-shape, Japanese Maples come in an array of sizes, growth habits, color ranges, and full sun to part shade preference. They add structure, contrast, texture, and beauty to any garden. • Carefully evaluate your chosen planting spot: Japanese maples require a slightly acid, sandy loam, with medium moisture and good drainage. Regular leafed varieties take full sun better than laceleaf types, but all Japanese Maples will be happy with at least some afternoon shade, since St. Louis summer sun is hot, strong and humid. • Remember that plants grow outwards as well as upwards and site appropriately. Take into account proximity to any buildings and any overhead limits. Some pruning is possible but should not be a necessary task. • The main requirement of a Japanese Maple is a uniform supply of water. They are not happy with very wet periods followed by long, dry periods or vice versa. Most will need supplemental water in the St. Louis summers. Japanese Maples in planters have this same need for consistency – be careful that they do not become waterlogged! prepare your site, plant your tree • Japanese Maples are easy to plant.
  • Non-Native Trees and Large Shrubs for the Washington, D.C. Area

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    Woody Plants Database [http://woodyplants.cals.cornell.edu] Species: Acer miyabei (ay'ser mi-YA-bee-eye) Miyabe Maple Cultivar Information * See specific cultivar notes on next page. Ornamental Characteristics Size: Tree < 30 feet Height: 35'-45', Width: 30' Leaves: Deciduous Shape: upright oval to rounded, can have open or dense branching, low branching Ornamental Other: prefers full sun, tolerates partial shade Environmental Characteristics Light: Full sun, Part shade Hardy To Zone: 5a Soil Ph: Can tolerate acid to alkaline soil (pH 5.0 to 8.0) CU Structural Soil™: Yes Insect Disease none of significance Bare Root Transplanting Easy Other easy to transplant B&B or < 2.5" caliper bare root. Native to Japan Moisture Tolerance 1 Woody Plants Database [http://woodyplants.cals.cornell.edu] Occasionally saturated Consistently moist, Occasional periods of Prolonged periods of or very wet soil well-drained soil dry soil dry soil 1 2 3 4 5 6 7 8 9 10 11 12 2 Woody Plants Database [http://woodyplants.cals.cornell.edu] Cultivars for Acer miyabei Showing 1-2 of 2 items. Cultivar Name Notes Rugged Ridge 'Rugged Ridge' - more deeply furrowed corky bark than species State Street 'State Street' (a.k.a. Morton) - hardy to zone 4; upright oval form; good uniform branching; dark green foliage; good golden yellow fall color; possibly fast growing 3 Woody Plants Database [http://woodyplants.cals.cornell.edu] Photos Acer miyabei trunk Acer miyabei foliage 4 Woody Plants Database [http://woodyplants.cals.cornell.edu] Acer miyabei habit Acer miyabei - Bark 5 Woody Plants Database [http://woodyplants.cals.cornell.edu] Acer miyabei - Leaf Acer miyabei - Habit 6.
  • February 2021 Newsletter

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  • Latitudinal Gradient in Leaf Defense Traits of Woody Plants Along Japanese Archipelago

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  • For Japananus Hyalinus

    For Japananus Hyalinus

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  • Japanese Maples

    Japanese Maples

    JAPANESE MAPLES AKITA YATSUBUSA (LATIN: ACER PALMATUM) A very dwarf Japanese maple with a dense, round form. The small star shaped leaves emerge light green with a touch of red quickly turning to green for the summer. The fall color is a marvelous mix of red, orange, and yellow. Grows to the height of 2 ½ ft. Part sun Zone 5 AMBER GHOST (LATIN: ACER PALMATUM) Amber Ghost’ offers unique color in the maples. In spring, it is first bright pink, changing to a melon, pink-orange color. In summer it is a warm soft amber with a distinct green vein. Fall brings bright red and orange. ‘Amber Ghost’ is a wide, upright tree, excellent for either container or landscape if you want a series of stunning colors to bring into the garden. Grows 10-15’ tall and wide. Sun to part shade Zone 5 ARAKAWA (LATIN: ACER PALMATUM) Vigorous shrubby tree 18’ to 21’ tall, rough bark matures on 5 to 6 year old plants becoming more prominent as it ages. Yellow to scarlet fall foliage. Full sun to part shade Zone 4-9 AUTUMN FIRE (LATIN: ACER PALMATUM) A stunning mushroom-shaped mound. Spring foliage appears as light green with pink edges. The pink fades during summer, offering a darker green in return. Stalks are a brilliant red in summer as well. Fall offers a blaze of red and orange. Average growth is 15’ tall and wide. Shade to part shade Zone 6 AUTUMN MOON (LATIN: ACER SHIRASAWANUM) Autumn Moon is a lovely small Japanese maple. This deciduous tree leafs out in the spring with unusual and exceptional fall foliage.
  • Acer Campestre (Hedge Maple) - 20Hx20w (M) Very Tolerant of Heat and Drought

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    Acer campestre (Hedge Maple) - 20Hx20W (M) Very tolerant of heat and drought. Responds well to direct sunlight. Dark green foliage turns yellow in fall. 1.5” 1.75” 2” 2.5” 3” 3.5” 4” 4.5” 5” $169 $189 $199 $249 $299 $349 $399 $499 $599 Acer x freemanii ‘Jeffsred’ (Autumn Blaze Maple) - 50Hx40W (A) (M) Drought tolerance and exceptionally bright red fall color are hallmarks of this popular and proven performer. A hybrid of Red and Silver Maple, this vigorous grower combines the best attributes of both in a stately, adaptable, fast growing shade tree. Sterile (fruitless) tree. 2.5” 3” 3.5” 4” 4.5” 5” 5.5” 6” 6.5” 7” 7.5” 8” 8.5” $249 $299 $349 $449 $499 $599 $699 $799 $899 $999 $1099 $1199 $1299 Acer x freemanii ‘Sienna’ (Sienna Glen) - 50Hx35W (M) This hardy hybrid maple features a strong central leader and develops a pyramidal form with minimal pruning. Sterile (fruitless) tree. 2.5” 3” 3.5” 4” 4.5” 5” 5.5” 6” 6.5” 7” 7.5” 8” 8.5” $249 $299 $349 $449 $499 $599 $699 $799 $899 $999 $1099 $1199 $1299 Acer ginnala (Amur Maple) - 20Hx20W (M) Distinctive orange-red fall color. Grown both as a single-stemmed and multi- stemmed tree. Can be used as a screen or hedge. Does well in containers. Very hardy. 1.5” 1.75” 2” 2.5” 3” 3.5” 4” 4.5” 5” $169 $189 $199 $249 $299 $349 $399 $499 $599 Acer ginnala ‘Flame’ (Amur Maple) - 15Hx20-25W (M) A more vigorous selection of ginnala from the USDA, with striking red fall color.
  • Download PCN-Acer-2017-Holdings.Pdf

    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.