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