ROSE FAMILY 
91 
serrate leaflets 1.8 to 6 cm. Ions:) or some of the leaves simple and ovate 
or palmately lobed; petals 1.2 to 1.8 cm. long; berry black.—Along 
streams. 
4. FRAGARIA L. Strawberry 
Perennial herbs propogating by runners. Leaves in a basal tuft, 3- 
foliolate, the leaflets cuneate-obovate and serrate. Flowers white, borne 
in cymes on a naked stem. Calyx bearing 5 bractlets (simulating sepals) 
alternate with the calyx-lobes. Petals roundish, short-clawed. Pistils 
numerous, becoming seed-like achenes borne on the enlarged succulent 
receptacle, the whole popularly termed a “berry.” (Name in reference to 
the fragrance of the berry.) 
1. F. califomica C. & S. Wood Strawberry. Plants 1 to 1.4 dm. 
high; herbage pilose; leaves thin, light green, never with evident reticu¬ 
late veining; petals 6 to 8 mm. long; berry globose; achenes borne on 
the surface of the receptacle.—Coast Range woods. 
2. F. chilensis Duch. Sand Strawberry. Plants 2.4 to 9.6 cm. high; 
herbage hairy except the upper surface of the leaves; leaves thick, dark 
green, with evident reticulate veining; petals 8 to 12 mm. long; achenes 
sunk in pits on the receptacle.—Sandhills along the coast. 
5. POTENTILLA L. Five Finger 
Perennial or woody-based herbs with compound leaves and serrate or 
cleft leaflets. Flowers white or yellow, in terminal cymes. Calyx with 
bractlets as in Fragaria. Stamens 10 to many. Pistils many or numer¬ 
ous, borne on an elevated dry receptacle, becoming achenes. (Diminutive 
of the Latin potens, powerful, some species used medicinally.) 
Stamens 20 to 25 ; filaments filiform ; petals yellow. 
Leaves white-silky beneath; creeping herb.1. P. anserinct. 
Leaves green on both faces ; stems erect.2. P. glandulosci. 
Stamens 10 in 2 rows; filaments dilated; petals white. 
Petals erect or nearly so; calyx-tube deeply cup-shaped.3. P. calif omica. 
Petals spreading rotately; calyx-tube saucer-shaped or cupulate....4. P. lindleyi. 
1. P. anserina L. Silver Weed. Stems slender, prostrate, the leaves 
and peduncles in a basal tuft, crowning the thick root; leaves pinnate, 
white-silky beneath; leaflets 7 to 21, with smaller ones between; petals 
rounded, much exceeding the calyx.—Marshy or springy places along the 
coast or in the mountains. 
2. P. glandulosa Lindl. Plants 2.8 to 8.6 dm. high; leaves pinnate; 
leaflets 5 to 7, broadly ovate or obovate, cuneate at base, 2.4 to 7.2 cm. 
long; cyme lax; flowers small; petals pale yellow, scarcely equaling the 
calyx.—Wooded hills. 
3. P. californica (C. & S.) .Greene. Stems stoutish, erect, 2.8 to 8.6 
dm. high; leaflets 9 to 21, cuneate-obovate to oblong, 1.2 to 4.2 cm. long; 
cyme dichotomously forked; petals about equalling the calyx; filaments 
opposite the calyx-lobes, subulate, the others filiform or nearly so.— 
Wooded slopes or edge of brushy thickets, Coast Ranges from Humboldt 
Co. to Monterey Co. 
4. P. lindleyi Greene. Stems erect or ascending, 1.6 to 4.8 dm. high; 
leaves mostly basal: leaflets roundish to cuneate-obovate, 8 to 14 mm. 
