72 ROSACEA. 



5. R. vitifolius, Ch. & Schl. iu Linnsea, ii. 10 (1827), also R. vrsiuua, 

 1. c. 11. Stems woody, very prickly and glaucous, weak and trailing or 

 suberect, 5 — 20 ft. long : leaves simple (on young plants ; also often on 

 flowering branchlets), or pinnately 3 — 5 foliolate ; leaflets ovate to oblongr 

 coarsely toothed, glabrous or more or less pubescent or tomentose ; 

 stipules oblanceolate to linear : fl. imperfect ; staminate large, with 

 elongated petals ; pistillate small, with petals short and relatively 

 broad : fr. oblong, black and sweet. — Very common on hanks of streams 

 throughout the Coast Range and in the interior ; variable and perhaps 

 embracing more species than one. Fl. Jan. — Apr.; fr. May, June. 



18. ROSA, Varro (Wild Rose). Prickly shrubs with unequally 

 pinnate leaves, adnate stipules and solitary or corymbose large flowers. 

 Calyx-tube globose or urceolate ; limb 5-parted ; bractlets 0. Petals 5, 

 rounded, spreading. Stamens co , on a thickened margin of the silky 

 disk which lines the calyx-tube. Pistils qo ; ovaries free and distinct ; 

 styles subterminal ; ovules solitary, pendulous. Fruit of few or many 

 osseous large achenes enclosed in the fleshy-enlarged red berry-like 

 calyx-tube. 



* Calyx-lobes deciduous from the fruit. 



1. R. g-ymiiocarpa, Nutt. in T. & G. Fl. i. 461 (1840). Slender, 1—4 

 ft. high, armed with scattered slender and weak straight prickles : leaf- 

 lets 5 — 9, rather remote, glabrous, oval, sharply doubly serrate, % — 1 in. 

 long : fl. 1, 2 or 3, barely 1 in. broad : calyx-lobes ovate, with few or no 

 appendages : fr. 3 — 5 lines long, oval or oblong, nearly or quite closed at 

 summit : seeds few, smooth. Var. pubescens, Wats. Finely pubescent. — 

 Common in shady places, near streams and on bushy northward slopes of 

 the Coast Range ; the variety in the Sierra Nevada. Mar. — May. 



* * Calyx-lobes persistent. 



2. R. Sonomensis. Slender, 1 ft. high, with many flexuous very leafy 

 branches well armed with straight prickles : stipules short, almost 

 truncate, narrow, the margin closely glandular-ciliolate, at length revo- 

 lute : leaflets 5, remote, broadly ovate or nearly orbicular, truncate or 

 somewhat cordate at the slightly insequilateral base, }4 — J^ in. long, the 

 margin evenly and coarsely serrate, the serratures minutely glandular- 

 denticulate, both surfaces glabrous : fl. many, small, in dense terminal 

 corymbs : calyx-tube round-pyriform, glandular-hispid ; lobes ovate- 

 lanceolate, acuminate, without foliaceous tip or appendages, erect in 

 fruit. — At the Petrified Forest in Sonoma Co., collected by the author late 

 in August, 1888, and distributed as R. spUhaina'a, to which it is allied, 

 but from which the characters of leaflet and stipule abundantly dis- 

 tinguish it. 



3. R. spithainaea, Wats. Bot. Calif, ii. 444 (1880). Glabrous and 

 sparingly prickly, low and slender 4 — 12 in. high sparingly branched and 



