Parr 4, 1908] ROSACEAE 367 
the base, flat and dehiscent by alongitudinal marginal slit. Receptacle hemispheric or semi- 
ellipsoid, with very numerous pistils. Style nearly basal, in all our species except two 
thickened and glandular a little below the middle and tapering to each end, rather 
diaeaiie ; stigma minute. Seed attached near the base of the style, ascending and ortho- 
ropous. 
Type species, Drymocallis rubricaulis Fourr., which is the same as Potentilla rubri- 
caulis Jordan, not P. rubricaulis Lehm. 
Styles fusiform, less than twice as long as the ovaries. 
Sepals ovate to lanceolate, acute, rarely acuminate. 
Petals white or cream-colored, often however turning more yellowish in drying. 
Petals slightly if at all exceeding the sepals. 
Stem-stout, 3-10 dm. high, leafy ; inflorescence many-flowered, dense ; sepals in fruit 
over 7 mm. long. 
Leaves densely hairy ; petals orbicular or nearly so, 7-8 mm. long ; cyme short and 
dense ; stem densely short-hairy. 1. D. agrimonioides. : 
Leaves sparingly hairy ; petals obovate, 5-6 mm. long. 
Cyme short, flat-topped; leaflets rounded-obovate to 
flabelliform ; stem and petioles not conspicuously 
long-hairy. 2. D. corymbosa. = c+: 
Cyme elongate, narrow; leaflets more or less rhombic- 
obovate ; stem and petioles conspicuously long-hairy, 
especially below. 3. D. convallaria. © 
Stem slender, 2-5 dm. high; stem-leaves reduced ; inflores- 
cence few-flowered, open; sepals in fruit about 5mm. long. 4. D. laciea. ~.- ~ 
Petals much exceeding the sepals; cyme open, few-flowered ; 
stem slender. 
Teeth of the leaves ovate; sepals ovate-lanceolate or ovate ; 
stem glandular. 5. D. pseudorupestris. 
Teeth of the leaves lanceolate ; sepals lanceolate; stem silky- 
villous, scarcely glandular. 6. D. gracilis, =**~" 
Petals yellow in anthesis. 
Leaflets with ovate teeth. 
Petals much exceeding the sepals in length. 
Bractlets lanceolate to linear; sepals lanceolate or ovate- 
lanceolate. 
Stem and petioles short-hairy; petals 5-8 mm. long; 
stem 2-4 dm. high, slender, few-flowered. 7. D, monticola, -..' 
Stem and petioles long-hairy, the former at least below ; 
petals 8-10 mm. long. 
Inflorescence few-flowered, with slender branches ; 
stem-leaves reduced ; plant slightly if at all viscid ; 
practlets usually less than half as long as the 
sepals, : 
Leaves, hypanthium, and inflorescence densely 
hairy. 8. D. ashlandica, «™ 
Leaves, hypanthium, and inflorescence sparingly 
hairy, merely sparingly glandular-puberulent, or 
glabrate. 9. D. glabrata, ©" 
Inflorescence many-flowered ; stem leafy; plants con- 
spicuously viscid; bractlets much more than 
half as long as the sepals. 
Plant tall, 3-10 dm. high ; cyme flat-topped. 
Leaflets rhombic-obovate, acute, at least the ter- 
tinal one; inflorescence leafy. 10. D. foliosa. : valida 
Leaflets of the basal leaves orbicular to obovate, . 
obtuse ; upper leaves reduced. 1. D. valida. 
Plant low, 2-3 dm. (rarely 4 dm.) high ; cyme nar- 
row, leafy ; leaflets orbicular or rounded-obovate. 12. D. jissa. 
Bractlets elliptic or oval ; sepals broadly ovate. 
Stem 1-1.5 dm. high, almost scapose ; leaflets, except the 
terminal one, less than 1 cm. long; plant only slightly 
viscid. 
Stem 3-4 dm. high, leafy; leaflets 1-3 cm. long; plant 
very viscid. : 
Petals slightly if at all exceeding the sepals. 
Petals 5-7 mm. long, orbicular or nearly so. 
Bractlets linear-lanceolate, about % as long as the lan- 
ceolate sepals; leaflets obovate, irregularly or doubly 
toothed. 15. D. glandulosa. 
Bractlets oblong, or oblong-lanceolate ; sepals ovate-lan- 
ceolate ; leaflets more evenly simple-toothed, the 
Jateral ones inclined to be orbicular. 
Inflorescence small and dense ; bractlets % as long as 
the sepals. 
iedeicecence open; bractlets half as long as the 
sepals or less. 
13. D. pumila, wer 
14, D, viscosa. 2 veb.de 
16. D. arizonica. 
17. D. Hansent. \ 
