MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVEESITY 147 



California: Bolander, No. 4964, 1866; A. Gray, 1872 (types); Geo. Engelmarm, 

 1880, 1888 ; T. S. Brandegee, 1892 ; Dr. Kellogg, 1873 (P. ciliata Greene). 



35. Horkelia campestris (Jones). 



Potentilla Utahensis campestris Jones, Proc. Gal. Acad. (II.) 5 : 680. 1895. 



Ivesia Utahensis campestris Jones, 1. c. as synonym. 



Illustrations: Plate 88,/. 1; dissection of flower,/. 2; fruiting hypanthium and 

 calyx, /. 3; pistil, /. 4. 



Root rather slender. Stems several, decumbent or prostrate, more or less tinged with 

 red, somewhat silky- villous, less than 2 dm. long. Stipules lanceolate. Basal leaves numer- 

 ous, less than .5 dm. long, pinnate, with many rather approximate leaflets, more or less 

 silky-hirsute ; leaflets about 5 mm. long, divided to the base into linear-oblong segments. 

 Stem leaves few and smaller. Cyme branched, the branches with subcapitate clusters. 

 Hypanthium cupulate or saucer-shaped, nearly glabrous; bractlets linear, much smaller 

 than the lanceolate-triangular sepals. Petals yellow, spatulate, a little exceeding the 

 sepals. 



First described as a variety of P. Utahensis, to which it bears only a superficial re- 

 semblance. It is evidently nearest related to H. unguicidata, but it is known only from 

 the original collection. 



California: Coville & Funston, No. 1624, 1891 (Whitney Meadows, Sierra Nevada). 



§9. EREMICAE. 



36. Horkelia eremica (Coville). 



Potentilla eremica Coville, Proc. Biol. Soc. Wash. 7 : 76. 1892. 



Coville, Cont. U. S. Nat. Herb. 4 : 95. 



Illustrations: Cont. U. S. Nat. Herb. 4: pi. 7. Plate 89, f 1; dissection of 

 flower,/ 2; stamen,/ 3; pistil,/ 4; fruiting hypanthium and calyx,/ 5. 



Root deep, perennial, thick, woody, crowned by a cespitose caudex. Stems several, 

 decumbent or ascending, finely grayish-puberulent or glabrate, 2-4 dm. high, simple, 

 somewhat leafy. Stipules ovate, 5 cm. or less long, entire. Basal leaves very numerous, 

 grayish hirsute-ciliolate or glabrate, nearly terete and wormlike, with densely crowded, 

 ovate leaflets 2-3 mm. long, which, however, are evidently two-ranked. Stem leaves 

 similar. Cyme narrow, with erect branches, the pedicels 5-15 mm. long. Hypanthium 

 puberulent or glabrate, saucer-shaped, 3 mm. broad ; bractlets ovate or oblong, about a 

 third the length of the Janceolate sepals. Petals white, obovate, exceeding the sepals by 

 a half. 



