13: MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
often ferruginous. Cyme dense. Hypanthium cup-shaped, hirsute, more or less purplish, 
about 4 mm. in diameter; bractlets linear-filiform, shorter than the lanceolate sepals. 
Petals oblong-linear, generally shorter than the sepals. 
A well marked species from the Siskiyou Mountains in southern Oregon. 
Oregon: L. F. Henderson, No. 274, 1886; Th. Howell, 1886; No. 682, 1887. 
14. Horkelia parviflora Nutt. 
Horkelia parviflora Nutt.; Torr. & Gray, Fl. N. Am. 1: 435. 1840. 
Dietr. Syn. Pl. 2: 1628; Walp. Ann. 2: 36; Regel, Act. Hort. Petr. 1: 151; Gray, 
Proc. Am. Acad. 6: 529; Wats. King’s Rep. 5: 89 and 447; Howell, Fl. N.W.Am1: 180. 
Potentilla Andersoni Greene, Pittonia, 1: 104. 1887. 
IntusTRATIONS: PLATE 68, f. 1-2; dissection of flower, f. 3; pistil, f. 4; stamens, 
f. 5; fruiting hypanthium and calyx, f. 6. 
Stems erect or ascending from a perennial short rootstock, densely glandular and 
more or less tinged with red, 1-2 dm. high. Stipules lanceolate. Basal leaves numer- 
ous; leaflets 5-8 pairs, densely hirsute and glandular, obovate or nearly orbicular, 
coarsely crenate. Stem leaves similar but with cuneate leaflets. Cyme subeapitate. 
Hypanthium cup-shaped, 2-3 mm. in diameter, hirsute and glandular, often tinged with 
purple; bractlets linear or nearly filiform, much shorter than the broadly lanceolate 
sepals. Petals broadly spatulate or obovate, about 8 mm. long. 
Watson united this species with HZ. fusca, but it has without doubt a better right to 
specific rank than H. capitata, differing from all of the group by its dense glandular 
pubescence, and from HH. fusca, H. capitata, ete., in its lower habit. It is a native of the 
plains of the Sierra Nevada Region. Specimens examined : 
Oregon: Nuttall. 
Califorma: J. G. Lemmon, No. 67, 1874; A. Gray, 1872; Hooker & Gray, 1877; 
M. K. Curran, 1881; W. H. Evans, No. 12, 1891. 
Nevada: C. L. Anderson, No. 112, 1864; W. E. Bryant. 
15. Horkelia pseudocapitata Rydb. 
Horkelia congesta Newberry, Pac. R. R. Rep. 6: 73. 1857. Not Dougl. 
Horkelia pseudocapitata Rydb.; Howell, Fl. N. W. Am. 1: 180. 1898. 
ILLUsTRATIONS: PLATE 69, f. 1-2; dissection of flower, f. 3; stamens, f. 4; pistil, 
f. 5; fruiting hypanthium and calyx, f. 6. 
Stem ascending or erect, 3-6 dm. high, more or less villous and (except in one speci- 
