56 R0SACEJ5. 



ous leaves ; stipules free and deciduous. Flowers white, in corymbs 

 terminating lateral leafy branchlets. Calyx 5-lobed with campanulate 

 tube. Petals 5, rounded. Stamens oo, in several rows. Pistils 1—5' 

 becoming as many inflated 2-valved several-seeded capsules which are 

 alternate with the calyx-lobes when of the same number, slightly coherent 

 toward the base. Seeds several, obovoid, with a shining crustaceous 

 testa, and copious albumen. 



1. N. capitata, Greene, Pittonia, ii. 28 (1889) ; Pursh, Fl. i. 342 (1814) ; 

 under Spinra. Surculiform stems 10-20 ft. long, more or less tortuous 

 and reclining or interlacing among the branches of small trees : leaves 

 short-petioled, ovate, acute, more or less distinctly 3-lobed and coarsely 

 toothed, 2 3 in. long, glabrous or stellate-pubescent : fl. in hemispherical 

 corymbs, or these on vigorous shoots racemosely elongated : pedicels 

 and calyx more or less tomentose ; calyx-lobes shorter than the petals : 

 follicles usually 4, exceeding the calyx, 3 4 lines long, ultimately splitting 

 into 2 valves.- Common along streams in the Coast Eange from the Bay 

 region northward. Apr. May. 



2. HVIUMX, Tournefort (B.AB.-DUA.CK. Steeple-Bush). Erect unarmed 

 shrubs with simple leaves and no stipules. Flowers numerous, small, 

 white or rose-purple, crowded in a terminal corymb or thyrsoid panicle. 

 Calyx .5-lobed. Petals 5, rounded, imbricate in bud. Stamens 20 or more, 

 inserted with the petals. Pistils about 5, becoming several-seeded folli- 

 cles which are alternate with the calyx-lobes when of the same number, 

 cartilaginous, not inflated. Seeds linear ; testa thin ; albumen 0. 



1. S. betulsefolia, Pallas, Fl. Ross. t. 16 (1784), Slender, widely 

 branching, 1-2 ft. high, with reddish bark : leaves ovate-oblong, 1 in. 

 long, subsessile or short-petioled, rounded at base, obtuse, sharply serrate 

 except toward the base : fl. rose-purple in small compound fastigiate 

 corymbs : carpels 1 line long ; ovules 5 8.— Moist places among rocks 

 in the higher Sierra. July, Sept. 



2. S. Uoii^lasii, Hook. Fl. 172 (1830). Stouter, 3-5 ft. high ; growing 

 parts and lower face of leaves tomentose : leaves oblong, 1 — 3 in. long, 

 serrate toward the apex : fl. rose-colored, crowded in a long thyrsoid 

 panicle.- Humboldt Co., Chesnul cO Dreir, and northward toward the 

 coast or in the mountains. July. 



3. ARU>X'US, Lirimrus (Goats' Beard). Herbaceous perennial with 

 ample tripinnate leaves and no stipules. Flowers dioecious, small, white, 

 in niimerous slender panicled spikes at summit of the tall stem. Petals 

 5, spatulate, convolute in bud. Stamens hypogynous. Pistils 3-5, 

 becoming several-seeded follicles which are alternate with the calyx-lobes, 

 otherwise as in Spir.va, but seeds pendulous. 



