£72 ROSACEAE. KUNZIA. 
CERUOCARPUS. 
K. tridentata Spreng. 1l.c. Purshia tridentata DC. A shrub or small 
tree 2-10 feet high, with brown or grayish bark, the young branches and 
branchlets pubescent: stipules connate at base, setaceous; leaves cuneate- 
obovate, 3-12 lines long, 3-lobed at the apex, attenuate at base to a thick 
petiole, white-tomentose beneath, green above: flowers nearly sessile; 
calyx 2-4 lines long, densely canescent-tomentose, with or without some 
glandular hairs below, the oblong obtuse lobes shorter than the tube; 
petals spatulate-obovate, unguiculate, 3-5 lines long, exceeding the calyx- 
lobes: carpels oblong, densely pubescent, striate, attenuate at each end, 
4-6 lines long, exserted. Common on rocky hillsides and gravelly or sandy 
plains, Brit. Columbia to California and the Rocky Mountains. 
6 CERCOCARPUS H.B. K. Nov. Gen. vi, 223 t. 556. 
Small trees or shrubs with alternate leaves, small wholly ad- 
nate stipules and axillary or terminal inflorescence. Tube of 
the calyx cylindrical, long and pedicel-like, more or less persis- 
tent, the limb short, campanulate, 5-lobed, without bractlets, 
deciduous. Petals none. Stamens 15-25, inserted in 2-3 rows 
on the limb of the calyx; filaments short; anthers oval or 
rounded deeply emarginate or cleft at each end. Ovary solitary, 
free, with a single erect ovule: style terminal, villous: stigma 
capitate. Carpel linear-oblong, caudate with the long perristent 
plumose style which is more or less enclosed in the slender per- 
sistent tube of the calyx. Seed witha membranous testa and no 
albumen. Cotyledons long and linear. 
* Leaves persistent, small, entire, thick-coriaceous with revolute 
margins, 1-nerved. | 
C. ledifolius Nutt. T. & G. Fl. i, 427. A small tree or shrub 6-15 feet 
high with moderately straight rigid branches: leaves lanceolate or oblong, 
acute, glandular apiculate, dark green and usually glabrous above, tomen- 
tose beneath, attenuate below to a thick petiole, 6-18 lines long, mid- 
nerve prominent: flowers sessile, 3 lines in diameter, tomentose ; iimb of 
the calyx 2 lines long, the oblong-obtuse lobes longer than the throat, 
tube becoming 3-5 lines long: tails of the achenes at length 2-3 inches 
long. In mountainous districts, eastern Oregon to California and the 
Rocky. Mountains. 
C.. intrieatus Watson Proc. Am. Acad. x; 346. A rigidly and intri- 
cately much branched shrub, 1-6 feet high with ashy-gray bark: leaves 
lanceolate or apparently linear by the involution of the margins, silky- 
pubescent both sides or glabrate above, acute, apiculate, sessile, 5-10 lines 
long: flowers sessile; tomentose; limb of the calyx 2 lines in diameter, 1-2 
lines long, the short triangular lobes not half as long as the throat, the 
persistent tube becoming 2 lines long: tails of the achenes 1-2 inches 
long. On dry hillsides along streams, John Day valley eastern Oregon to 
Nevada and California. 
* * Leaves deciduous, rather large, the margins not involute, pin- 
nately veined. 
C. betulefolius Hook. 1. c. t. 322. C. parvifolius of recent authors not 
Nutt. A shrub or small tree 2-15 feet high with gray thin flaky bark and 
long slender spreading or recurved branches: leaves obovate or oblong, 
with cuneate base, obtuse, coarsely serrate above the middle, green but 
finely pubescent above, densely white tomentose beneath, 1-2 inches long 
on short petioles, conspicuously veined: flowers on rather slender. pedicels, 
tomentose, limb of the calyx 3-4 lines in diameter, the triangular obtuse 
lobes about equalling the throat; the tube becoming 4-6 lines long, ob- 
