ROSACEH, (ROSE FAMILY.) 53 
1, C. parvifolius, Nutt. A shrub 2 to 10 ft. high, or rarely a tree, branching from 
a thick base. Tails of the fruit often 4 inches long. 
7. PRAGARIA, Tourn. STRAWBERRY. 
Calyx persistent; limb 5-toothed, with 5.alternate bractlets. Petals white spreading. 
Stamens in one row. Carpels numerous, smooth; styles lateral short. Receptacle much 
enlarged in fruit, conical, scarlet, bearing the small akenes on its surface. 
1, F. Chilensis, Ehrh. Densely villous, with silky hairs; leaflets thick, smooth 
above; flowers often an inch broad; fruit ovate; akenes deeply pitted. 
2. F. Californica, Cham. & Schl. Somewhat villous; leaves thin, veiny; fruit 
small; akenes not in pits. 
8 POTENTILLA, L. 
Calyx asin Fragaria. Petals yellow, rarely white. Stamens 20 to 50, marginal in t 
to 3 rows. Carpels numerous. Akenes small, on a dry receptacle. 
1. P. glandulosa, Lindl Perennial, erect, a foot or more high; leaves pinnate; 
leaflets 5 to 9, rounded, ovate, coarsely serrate; flowers cymose; calyx 4 to G lines long, 
usually villous, with coarse hairs; bractlets shorter than the lobes; petals not exseediag 
the calyx; stamens 25 in one row. 
2. FP. Anserina, L. (SmveR-wzeEp.) White tomentose and silky-villous eaves, all 
radical, often a foot long or more; leaflets 3 to 10 pairs, with smaller ones interposed, 
oblong, sharply serrate, tomentose, at least beneath; flowers yellow, solitary, on scape- 
like peduncles. 
9. HOREEDLIA, Cham. & Schl. 
Petals obovate to linear, often clawed, white or pink. Stamens 10, in two rows; 4ila- 
ments more or less dilated; those opposite to the sepals broadest. Flowers cymose. 
* Bractlets nearly as broad as the calyx-lobes, 
1. H. Californica, Cham. & Schl. Glandular-pubescent; stems a foot high or 
more; leaflets 5 to 10 pairs, 3 to 8 lines long; calyx about equaling the spatmlate petals. 
Var. sericea, Gr. Canescent throughout, with a dense, silky pubescence; leaf- 
lets larger. 
* * Bractlets much narrower than the calyx-lobes. 
2, H. tenuiloba, Gr. Canescently villous, a foot high; leaflets 8 to 12 pairs, deeply 
incised, 2 or 3 lines long. 
3. H. Bolanderi, Gr. Densely hoary-pubescent, cespitose, the stems $ 97 <« taches 
high, the numerous leaflets minute, with rounded lobes. 
10. ADENOSTOMA, Hook & Arn. Cuamtso. 
Calyx persistent, 5-lobed; tube obconical, 10-ribbed; lobes monrbranscwnrea, Lioaad, 
