KEY TO IMPORTANT WOODY PLANTS 95 



scars small, raised, often with ragged edges, connected around 

 the twig by lines or ridges; bundle trace 1, indistinct; "berries" 

 (drupes) white, each with 2 "seeds" (nutlets); erect or trailing 



shrubs snowberries (Symphoricarpos spp.) . 



7. Shrubs erect, spreading by suckers or underground stems. 

 8. Pith hollow; twigs, leaves usually hairless; leaves often 

 lobed, seldom crowded, thin; flowers open-bell-shaped, 

 lobed to near middle, densely hairy in throat, unsymmet- 

 trical near base, to % inch long, clustered in upper leaf axils 

 and near twig tips; "berries" nearly globe-shaped, about 

 )i inch in diam.; bark gray, usually smooth; shrubs to 10 

 feet high, often thicket-forming; native snowberry (also 

 cultivated), common at lower altitudes, e. Oreg., e. Wash, 

 (tvpe localitv, Holmes Creek, near Laurel, Klickitat Co., 

 Wash.) 



Columbia snowberry (Symphoricarpos rivularis). 



8. Pith solid; twigs, leaves usually densely hairy with fine, 

 whitish, short, curved hairs; leaves seldom lobed, often 

 crowded, firm, veiny, with slightly thickened, rolled-under 

 margins; flowers tubular-bell-shaped, shallowly lobed, a 

 little hairy deep in tube, symmetrical near base, to % inch 

 long, drooping singly or in pairs from upper leaf axils; 

 bark dark brown, smooth or shreddy; shrubs to 5 or 6 feet 

 high; moist to dry sites, higher elevations, e. Oreg., e. Wash. 



whortleleaf snowberry (Symphoricarpos vaccinioides) . 

 7. Shrubs trailing; stems sometimes rooting at joints (nodes); 

 bark gray, shreddy; leaves thin, much paler and prominently 

 net-veined on under surface; flowers open-bell-shaped, lobed 

 to near middle, symmetrical at base; "berries" nearly globe- 

 shaped, to Y 4 inch in diameter. 



9. Branches erect, short; stems long-trailing (to 10 feet); 

 young twigs often with a few soft, fine hairs; leaves some- 

 times lobed, nearly hairless and finely net-veined on upper 

 surface; margins finely hairy-fringed; flowers 2-5, in small 

 end clusters (racemes) ; gravelly slopes, lower altitudes, 

 open woods, Blue Mts., se. Wash., otherwise only w. of 

 Cascades (type locality, Upper Valley, Nisqually River, 

 Pierce Co., Wash.) 



Washington snowberry (Symphoricarpos hesperius). 

 9. Branches loosely spreading, 2 feet long; stems trailing, 

 rooting at joints; young twigs, leaves, and leafstalks densely 

 soft -velvety-hairy; leaves often lobed; flowers single or in 

 pairs in upper leaf axils, densely hairy in the throat; 

 Klamath and Swan Lake Valleys, Keno and Crater Lake 

 areas, s. Oreg. (Tvpe locality, Lassen Peak, Calif.) 



sharpleaf snowberry (Symphoricarpos acutus). 

 1. Leaves not lobed. 

 10. Margins toothed. 



11. Plants low (to 2 feet high), clump-forming half-shrubs with 

 unpleasant odor; stems woody, spreading and much-branched 

 at base; seasonal shoots erect; leaves bright green, leathery, 

 to 2 inches long and nearly 1 inch wide, narrowly lance- to 

 egg-shaped, abrupt- or taper-pointed at tip and short- 

 stalked on leaf}* snoots, stalkless or clasping, few and bract- 



471114 O-60-7 



