204 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



Stem low and slender, about 2 dm. high, simple, about 3-leaved, not striate, nearly 

 glabrous, or glandular above with \erj short hairs. Stipules small, 2-4 mm. long, ovate, 

 subentire. Basal leaves many, short-petioled ; leaflets about 3-pairs, smooth or beset with 

 a few scattered hairs, rhombic-ovate, mostly acute, serrate with acute teeth, the largest 

 ones 1.5 cm. long, seldom 2 cm. Stem leaves about 3, similar, the lowest with about 2 

 pairs of leaflets, short-petioled, the other two generally 3-foliolate and subsessile. Flowers 

 few in open cymes, about 1 cm. in diameter. Hypanthium glandular with very short hairs, 

 sometimes also with a few long ones; sepals about 8 mm. long in fruit; bractlets linear- 

 oblong, obtuse or acutish, half the length of the broadly ovate, slightly mucronate sepals. 

 Petals yellow, obovate, a little exceeding the sepals. Stamens 15-20. Style nearly basal, 

 filiform, long and slender, in fruit about twice as long as the smooth achene. 



It somewhat resembles depauperate D. glandulosa, but differs by its longer filiform 

 style, which is not fusiform, by the pubescence, which could be called glandular-pruinose, 

 when present, with a few scattered straight hairs on the hypanthium and the leaves, and 

 by the small fruiting calyx. It also simulates Potentilla brevifolia, but in the latter the 

 style is not basal and the petals are emarginate. 



D. rhomboidea is apparently a rare plant. The following specimens have been seen. 



Nevada: S. Watson. 



Montana: S. Watson, No. 114. 



Washington: W. N. Suksdorf, No. 742 (Mt. Paddo), 1885; No. 119, 1882. 



Oregon: Thomas Howell (Deer Creek Mts.), Nos. 1128, 128 and 687, 1887; Rev. R. 

 D. Nevius, 1873. 



13. Drymocallis cuneifolia. 



Illustrations: Plate 111, f. 1, 2; dissection of flower,/. 3 ; pistil,/. 4; stamen, 

 / 5 ; fruiting hypanthium, / 6. 



Stem erect, 3-4 dm. high, with few divergent branches, sparingly and finely silky- 

 villous, scarcely at all glandular. Stipules broadly ovate, entire or toothed. Basal 

 leaves several, with slender petioles, pinnate ; leaflets 2-4 pairs, finely silky-villous, 

 broadly cuneate-flabelliform, coarsely toothed at the apex, entire-margined below. Stem 

 leaves with 1 or 2 pairs of similar leaflets. Cyme open, with divergent branches and slen- 

 der pedicels. Hypanthium finely silky, almost hemispheric, 6-7 mm. in diameter ; 

 bractlets narrowly linear, much shorter than the broadly ovate acute sepals. Petals 

 erect, obovate, scarcely exceeding the sepals. Stamens about 20 ; anthers flat, slightly 

 cordate at base. Style nearly filiform, much longer than the achenes. 



This species differs from all the others in the small flowers with erect petals and the 

 cuneate-flabelliform leaflets. It is evidently a very rare plant. 



