134 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. PI. 2 : 1628; Walp. Ann. 2 : 36; Kegel, Act. Hort. Petr. 1 : 151 ; Gray, 

 Proc. Am. Acad. 6 : 529 ; Wats. King's Rep. 5 : 89 and 447 ; Howell, Fl. N. W. Am 1 : 180. 



Potentilla Andersonii Greene, Pittonia, 1 : 104. 1887. 



Illustrations: Plate 68, f. 1-3 ; dissection of flower, /. 3 ; pistil, /. 4-; stamens, 

 f. 5 ; fruiting hypanthium and calyx, /. 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 subcapitate. 

 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 3 mm. long. 



Watson united this species Avith H. fuscu, 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 H. fusca, H. capitata, etc., in its lower habit. It is a native of the 

 plains of the Sierra Nevada Region. Specimens examined : 



Oregon : Nuttall. 



(Jalifornia: 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 covgcsta Newberry, Pac. R. R. Rep. 6^: 73. 1857. Not Dougl. 

 Horkelia j)seudocapifata Rydh.; Howell, Fl. N. W. Am. 1: 180. 1898. 

 Illustrations: Plate 69, f. 1-S; dissection of flower, /. 3; stamens, /. A; pistil, 

 /. .'7 ; fruiting hypanthium and calyx, /. 6. 



Stem ascending or erect, 3-6 dm. high, more or less villous and (except in one speci- 



