MEMOIRS FROM THE DEPARTMENT OP BOTANY OF COLUMBIA UNIVERSITY 151 



It is nearest related to H. Utaliensh, but differs by the decumbent stems and broader 

 and shorter bractlets and is apparently a very rare plant. It was included by Dr. Wat- 

 son in H. pygmaea, from which it differs in the inflorescence, the absence of bristle- 

 points to the leaflets and the broader petals. 



Califorma: W. H. Shocldey, No. 572, 1888 (White Mountains.) 



42, Horkelia lycopodioides (Gray). 



Ivesia lycopodioides Gray, Proc. Am. Acad. 6 : 530. 1865. 



Wats. King's Rep. 5 : 448. 



Ivesia Gordonii var. lycopodioides Wats. Bot. Gal. 1 : 183. 1876. 



Rattan, An. Key W. Coast Bot. 52. 



Potentilla Gordonii var. lycopodioides Greene, Pittonia, 1 : 106. 1887. 



Greene, Fl. Fran. 1 : 69. 



Illustrations: Plate 92, f. 1; leaflets, /. 2; dissection of flower, /. 3; pistil, /. J,.; 

 stamen, /. 5; fruiting hypanthium and calyx, /. 6. 



Densely cespitose from a deep Avoody perennial root. Stem scapose, glabrous, less 

 than 5 cm. high. Basal leaves very numerous and crowded, about 3 cm. long, smooth, 

 with numerous minute crowded and more or less imbricated leaflets, these only 1-2 mm. 

 long, 3-cleft into oval thick segments. Cyme few-flowered and corymbose. Hypanthium. 

 cupulate or saucer-shaped, about 3 mm. in diameter, glabrous or slightly puberulent ; 

 bractlets oblong, about two-thirds as long as the ovate sepals. Petals yellow, oblong- 

 oblanceolate, about equalling the sepals. Stamens 5, with slender but short filaments. 

 Pistils 6-12. 



H. lycopodioides has been regarded as a variety of H. Gordonii, but is without doubt 

 a good species, differing principally by its very small, perfectly glabrous and shining 

 leaflets, the more open and truly cymose inflorescence, and shallower hypanthium. It 

 grows on alpine peaks of the Sierra Nevada. 



California: W. H. Brewer, No. 1746, 1863 (Mt. Dana, type); Bolander, 1866; Miss 

 Errington, 1865; G. P. Rixford (Mt. Conness). 



43. Horkelia Gordonii Hook. 



Horkelia Gordonii Hook. Journ. Bot. and Kew Gard. Misc. 5 : 341. 1853. 

 Walp. Ann. 4 : 664. 



Ivesia Gordonii Torr. & Gray in Newberry, Pac. R. R. Rep. 6 : part 3, 72. 1857. 

 Gray, Proc. Am. Acad. 6: 530; Wats. King's Rep. 5 : 90 and 448; Brewer & Wats. 



