ROSACEA, (rosi: family.) 79 



tomentose beneath, nearly smooth ahove, iiinnatifidly toothed or lobed, the 

 lobes often dentate : panicle much branclieii, ton»entosc. — Spirna discolor, 

 Pursh. 



Var. duraosa, Maxim. Only 1 to 3 feet high : leaves u.smUly small, cune- 

 ate into a .slK)rt mari^ined petiole, often white tomentose honeath : panicle 

 mostly smaller ami les.s diffuse. — *^■y///v^« (Imnosd, Nutt. .s". (ii.s,xt!ur, var. 

 (luinosa, Watson. Colorado and New Mexico and thenco to the iSierra Nevada 

 and Oregon. 



7. RUB US, I.. Raspberry. Bl.vckhkuky. 



Petals 5, consj)icuous. Styles nearly terminal. — Krect or trailing, often 

 prickly: leaves simple or pinnately "3 to 7-foli(jlate: tlowers white or reddi.sh, 

 in ])anicles or corymbs, or solitary : fruit usually edii)le, red, purple, (»r purplish- 

 black. — Ours are all true l\asj)berries, having fruit with a bloom .separating 

 from the receptacle when ripe. The Blacklierries, having fruit idack, shining 

 and persistent on the receptacle, are not known to occur within our range. 

 « Leaves simple: prickles none (exce/U in No. 3) : Jioicers lanje: fruit and receptu' 

 cleflat and broad. 



1. R. Nutkanus, Mo9ino. (Salmon-berry.) Stems 3 to 8 feet high; 

 bark cjreen and smooth or more or less glandular-pubescent, becoming brown and 

 shreddy : leaves palmately and nearly equally 5-lobed, cordate at base, unt<pia!l.f 

 serrate, 4 to 12 inches broad, glabrous or somewhat tomentose. the veins Unnith 

 as well as the petioles and peduncles usualli/ more or less hispid with gland-tipind 

 hairs : flowers white, an inch or two broad : caly.x densely tomentose : car|>el.s 

 very numerous, tomentose : fruit red, large, and j)leasantly flavored. — From 

 Colorado northward, westward to the coast, and eastward to L'pper Michigan. 



2. R. deliciosus, James. Shrub 3 to 4 feet high ; branches, i/oumf 

 leaves, and caljix tomentose-pubescent or puberulent, not (jlandnlar: leavts rrnifhnn' 

 orbicular, rugose, more or less 3 to 5-lobed, fneli/ serrate-toothed : flowers 2 

 inches across: sepals with a dilated acumination: petals \\\\\iG: fruit purplish, 

 large, smooth, "flavor not agreeable to the human palate." — Canons of 

 Colorado. 



3. R. nivalis, Dougl. — Low, not more than 6 inches high, frutescent: leaves 

 cordate, 3-lobed, sharj)li/ toothed, glabrous, the petioles and veins of the Iravr* 

 armed with recurred prickles: peduncles short, 2 flowered : jfetals red (I) x fruit 

 red. — In the Bitter Root Mountains and northward. Probably a species of 

 the next section with the leaflets confluent. 



« * Leaflets 3 /o 5 : petals small, erect, white. 

 H- Stems annual, herbaceous, not prickli/: fruit of few sejxirate grains. 



4. R. triflorus, Richardson. Stems ascending or trailing : leaflets 3 (or 

 pedately 5), rhombic-ovate or ovate-lanceolate, acjjte at both en«ls, conreely 

 doubly serrate, thin, smooth: peduncle 1 to 3-flowered : fruit small, roil. — 

 Colorailo and northward into British America and ojustward to the New Kng- 

 land and Middle States 



•♦- t- .'^tems biennial and wood I/, prirkhf.- receptacle oblong : fruit hrmisphertcai. 



5. R. strigOSUS, Michx. (Wild Red Rasimikimiv.) Stem.«« upright, and 

 with the stalks, etc. beset with stiff' straight brist!'<, .rlaudiilar when younft 



