Self-Guided Tour
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Gravel 9 Stairs Foot Bridge 8 Staff Only Suggested Maple Route Green paths may be slippery and may not be suitable for all guests. 7 Rock Steps 11 10 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. EXIT SALIDA 15 5 ӞՌ 12 16 13 4 6 14 2 3 1 SELF-GUIDED TOUR 1. Five-Lobed Maple (Acer pentaphyllum) Critical to Conservation & 2. Giant Rose (Rosa odorata var. gigantea) Seasonally Unique 3. Katsura Tree (Cercidiphyllum japonicum) 4. Japanese Quince (Chaenomeles japonica) 10. Star Magnolia (Magnolia stellata) 5. Chinese Tulip Tree (Liriodendron chinense) 11. Wilson’s Barberry (Berberis wilsoniae) 6. Golden Larch (Pseudolarix amabilis) 12. Igiri Tree (Idesia polycarpa) 7. Great White Rhododendron (Rhododendron decorum subsp. 13. Chinese Emmenopterys (Emmenopterys henryi) decorum) 14. Evergreen Dogwood (Cornus capitata) N 8. Wilson’s Magnolia (Magnolia wilsonii) 15. Coliseum Maple (Acer cappadocicum subsp. sinicum) 9. Japanese Bigleaf Magnolia (Magnolia obovata) 16. Chinese Wingnut (Pterocarya stenoptera) January r Fe The IUCN Red List is a useful tool for determining the be br em ua rarity of and risk to a species. As with all scientific tools, ec ry D rankings are adjusted when new data is collected, but with r the rapid shifts to our global environment, it doesn’t always e M b a change fast enough. m r e c It is impossible to collect accurate v h data on EVERY species in the world o Least Concern N LC and just as impossible to have real-time tallies of the number of r individuals of a specific species. There A e Near p b are many barriers that can cause years r o NT Threatened i t l between accurate counts: political, c physical, financial and more. This O doesn’t mean IUCN isn’t useful - it is VU Vulnerable one of the best databases out there r e M - but it does mean we need to use b m a multiple sources to understand the e y t p Endangered full picture and prioritize plants in peril. e EN S The scientific community needs more t J s u botanists and ecologists in the field u n Critically g e u A CR Endangered to monitor, conserve, and restore our J u y l world’s biodiversity. The Garden does its part by preserving wild genetics Extinct in the to participate in ex situ research, Every season brings unique features to the Garden. Winter is the time EW Wild inter-garden metacollections, and, to enjoy the epic vistas and overlooks crossed by the architectural in the worst case, a safety net if wild beauty of bare trees. With the rains comes spring and the lush green conservation efforts fail. and riot of colorful flowers. Magnolias tend to peak in April while NE Not Evaluated dogwoods are coated with white and pale yellow flowers throughout Explore the IUCN Redlist of the season. With the onset of summer, cones and fruits begin to form Threatened Speices at iucnredlist.org and the late bloomers unfurl their buds. The heat also brings new smells including the burnt sugar scent of the Katsura tree. Slowly READING PLANT LABELS colors change and the warm yellows, oranges, and reds of fall signal Common names are not consistent or specific, the onset of winter dormancy and the cycle continues. but are sometimes based on the scientific name Plants are incredibly weather dependent and not every plant blooms and often easier to remember. and fruits every year. Follow the Garden on social media to see what’s Five-Lobed Maple in season. Acer pentaphyllum genus - e.g. specific epithet - Acer = Maple usually descriptive, e.g. from Greek: penta sonomabotanicalgarden = five, phyllon = leaf 1155 1 EW EW CR CR EN EN VU VU NT NT LC LC Jan F Jan F Coliseum Maple ec e Five-Lobed Maple ec e D b D b M M Acer cappadocicum subsp. sinicum v Acer pentaphyllum v o a o a r r Native to SW China N Native to Sichuan Province, China N A A t t p p c c r r r O Most maples are known for their fall color, but this O Considered one of the rarest maples in the wild. M M M M M p p a a e e y y y XVIIJIEXYVIWWEQEVEW JVYMXWXLEXGVIEXIEVIHLEPS y ;MXLEPSRKHSVQERG] PIEǼIWWTIVMSHMXSJXIR S S J J J u u g g n n u spring. u waits until May to leaf out. A A J J l l u u 1166 2 EW CR EN VU NT LC Jan F Jan F Chinese Wingnut ec e Giant Rose ec e D b D b M M Pterocarya stenoptera v Rosa odorata var. gigantea v o a o a r r Native to China N Native to NE India, N Myanmar, & SW China N A A t t p p c c r r O Long strings of nutlets (similar to samaras, but with O One of the tallest roses in the world, it uses hooked M M M M p p a a a e e y y EZIV]HMǺIVIRXWXVYGXYVIMJ]SYPSSOGPSWIP]XYVR y prickles to climb 60-80 ft. Gene sequencing shows it S S J J J u u g g n n u brown as they age and remain into winter. u and R. chinensis var. spontanea EPWSEPSRKXLI[EPPEW A A J J l l u u key grandparents of many modern cultivated roses. Katsura Tree Katsura used in preserves or jellies. or used inpreserves Sometimes cooked. or being bletted after only but can beeaten Fruits apple-shaped fruits infall. yellow hard to fruitsinspring mature green Small Quince Japanese smell. burnsugar or candy cotton sweet GSPSVERHMRXLI[EVQQSRXLWXLI]KMZISǺE seasonal marvelous provide leaves sensational. It’s andolfactorily visually isboth This tree 4 3 Native to Japan to Native japonica Chaenomeles &China Japan to Native japonicum Cercidiphyllum LC NT VU EN CR EW LC NT VU EN CR EW Oct Oct p No p No Se v Se v D D g e g e u c u c A A J J l l a a u u n n J J F F e e e n n b b b u u J J M M M M y y a a a a a a r r r r M M A A A r r p p Chinese Emmenopterys Evergreen Dogwood Evergreen QE]FIXIR]IEVWSVQSVIFIJSVIMXWǻVWXFPSSQ it itsblooms,depending onclimate, for renowned Although itis andrare. population isfragmented the range, native Although ithasalarge fall. Populations are stable in the wild. stable inthe are Populations fall. dimpled fruits in into ageand develop pink as they 5EPI]IPPS[PSRKPEWXMRKǼS[IVWMRWTVMRKXYVR 13 114 Native to China to Native henryi Emmenopterys Nepal & Bhutan, China,India,Myanmar, to Native Cornus capitata LC NT VU EN CR EW LCNENT VU EN CR EW EX 4 Oct Oct p No p No Se v Se v D D g e g e u c u c A A J J l l a a u u n n J J F F e e n n b b u u J J M M y y a a a a r r M M M A A A r r r p p p p 1111 5 EW CR EN VU NT LC Jan F Jan F Wilson’s Barberry ec e Chinese Tulip Tree ec e D b D b M M Berberis wilsoniae v Liriodendron chinense v o a o a r r Native to SW China N Native to Central & S China N A A t t p p c c r r O This drought tolerant shrub has wonderful O .XƶWLEVHXSWTSXXLIǼS[IVWEQSRKXLIKVIIR M M p p a a e e y WIEWSREPMX][MXL]IPPS[WTVMRKǼS[IVWTMROMWLVIH y T-shirt shaped leaves. Agricultural expansion and S S J J u u g g n n u berries, and fall color ranging from yellow to red. u timber trade threatens this tree in the wild. A A J J l l u u 1122 6 EW CR EN VU NT LC Jan F Jan F Igiri Tree ec e Golden Larch ec e D b D b M M Idesia polycarpa v Pseudolarix amabilis v o a o a r r Native to China, Korea, Japan, & Taiwan N Native to SE China N A A t t p p p c c r r r O O O O This deciduous tree is dioecious which means O Not a true larch because of its odd succulent- M M p p p a a e e e y there are male trees and female trees. We have y shaped cones that disintegrate once mature in the S S S J J u u g g n n u both on grounds, but the females are most u fall. This deciduous conifer is also known for its A A J J l l u noticeable because of their pendulous fruits. u beautiful, but brief golden fall color. 7 9 EW CR EN VU NT LC Jan F Jan F Great White Rhododendron ec e Japanese Bigleaf Magnolia ec e D b D b M M Rhododendron decorum subsp. decorum v Magnolia obovata v o a o a r r Native to China N Native to Japan N A A t t p p c c r r O Can be pruned and shaped as a large shrub or O *ZIRMJ]SYQMWWXLIǼIIXMRKHMRRIVTPEXIWM^IH M M p p a a a e e y y small tree.