82 
BOTANY. 
East Humboldt Mountains, Nevada, rare ; much more frequent in the Wah- 
satch; 7,000 feet altitude; June-August. (308.) 
RuBUS STEIGOSUS, Mx. From Pennsylvania to Newfoundland, Hudson's 
Bay, and the Great Slave Lake, thence south along the Rocky Mountains to 
Colorado (R. Idceus, 212 Parry) and New Mexico, (Fendler.) Rare and al- 
pine in the East Humboldt and Clover Mountains, Nevada ; 10,000 feet alti- 
tude; more frequent in the Wahsatch and Uintas, at an elevation of 
5,500-7,500 feet. (309.) 
RuBUS LEucoDERMis, Dougl. Glaucous, armed with very strong re- 
curved jmckles; stems erect; 3-foliolate or pedately 5-foliolate; leaflets 
broadly ovate, incised and serrate, acute, canescently tomentose beneath, the 
upper long-petiolulate, the two lower smaller and nearly sessile ; stipules se- 
taceous ; peduncles axillary and terminal, few-flowered ; petals nearly equal- 
ing the sepals ; fruit large, brownish black with a white bloom. — Resembling 
1(. occidentaUs. Oregon ; San Francisco Mountains, New Mexico, (Bigelow.) 
Found only in the Wahsatch Mountains, Cottonwood Canon ; 6,000 feet alti- 
tude ; in fruit, July. (310.) 
PuRSHiA^ TEiDENTATA, DC. Of dense growth, 2^4° high; stipules 
minute ; leaves 3-12" long ; calyx-lobes ovate, obtuse ; petals obovate, ex- 
ceeding the calyx, 3-5" long ; fruit h' long, tardily dehiscent, 2-valved.— 
From Colorado, Northern Arizona (Ives) and California to Washington Ter- 
ritory and the sources of the Missouri. On foot-hills in Nevada and Utah, in 
many places very abundant; 5-6,000 feet altitude ; May-October. (311.) 
Cercocarpus^ parvifolius, Nutt. A shrub, 2-10° hi 
from the ground ; leaves i-W long, cuneiform-obovate, silky-pubescent or 
•PURSHIA, DC. Calyx persistent-, tuliular-infuiKlibnliform, irnbricately 5-lobed. Petals 5 un- 
gniculate. Stamens 10-25, in one series, ^vith free filiform tilaments and large anthers. Carpels 'l-2 
free; style slu.rt, curved, persistent, sti-matose at the top and one side: ovule solitary, erect Fruit 
coria( ..(uis, ovute-ol.lon-, pubeseent, sessih-, ex. eedin- the calyx. Seed with a membranous double testa 
the tNvo eoatinos s.-parated fro.n each ..th.^r by a layer of deep-i)nri.le intensclv bitter granular matter- 
cotyledons Hat, obovate; radicle short, infrrior.-A ditrus.ly branched leafy shrub, tomentose and some- 
^^hat glandular-pubescent upon the leaves, c.lyx and fruit ; leaves small, alternate and fasicled subcu- 
neiform. il-ch ft, th.' lobes short-linear Avith revolute marguis, canescent beneath; flowers yellow ' subaes- 
Bile, solitary, axillary and terminal. ' 
n KK'fOCAK'lTS, IIBK. Calyx-tube persistent, cylindrical, long and pedicelliform, terete ; lobes 
of the lu.nnsplH.ru- deciduous limb sniall. valvate. IN.fnls none. Stamens 15-25, in 2-3 series, seated 
on the luub ol ■ x. ^^ ith short free incurved tilamcts, ami authersoften pubescent. Ovary solitary 
' • filiform, villous. Acheuium linear-oblong, coriaceous, included in the 
calyx, caudat. .v.i. ; „e pers.st.nt long ,dumose style: seed linear, with membranous testa, elongated 
c.otyledons. and mtenor ra.Iicle.-J^luubs or trees, with alternate simple leaves and axillary or terminal 
flowers. Lr.N rit. A llooK. 
