MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 127 



filaments and oblong anthers. Stipules about 1 cm. long, ovate, generally more or less 

 toothed. 



In the coast region of northern and central California, common on woody slopes in 

 the Bay Region. 



California, Wheeler Exped., No. 1470; E. L. Greene, 1887, 1891; G. R. Vasey, 

 1880; J. W. Congdon, No. 278, 1880; Mrs. Curran, 1886; Michener & Bioletti, 1893; 

 J. W. Blankinship, 1893 ( = H. gmndis, according to description) ; C. G. Pringle, 1882; 

 Alice Eastwood. 



3. Horkelia data (Greene) Rydb. 



Potentilla elata Greene, Pittonia, 1 : 100. 1887. 



Potentilla Calif ornica elata Greene, Fl. Fran. 1 : 66. 1891. 



Greene, Man. Bay Reg. Bot. 116. 



Horkelia elata Rydb. Bull. Torr. Bot. Club, 25 : 54. 1898. 



Illustrations: Plate 58, f 1 : dissection of flower, /. 2; stamen,/. 3; pistil,/. 4.; 

 fruiting hypanthium and calyx, f. 5. 



Stems rather numerous from a perennial root, quite slender, .5-1 m. high, softly but 

 sparingly glandular-villous. Stipules ovate-lanceolate, about 1 cm. long. Basal leaves 

 numerous, slender-petioled, pinnate; leaflets 7-11 pairs, thin and softly hairy, obovate 

 or broadly cuneate-flabelliform, repeatedly cleft and incised into very narrow segments, 

 the upper confluent; the stem leaves similar but smaller and with fewer leaflets. Cyme 

 open ; pedicels short, 2-6 mm. long. Hypanthium campanulate, softly hairy and gland- 

 ular, in fruit 5-8 mm. in diameter; bractlets and sepals triangular-lanceolate, mostly en- 

 tire, the former 3-8 mm. long, generally exceeding the sepals. Petals white, oblong, 

 about equalling the sepals. Stamens 1 0. 



Professor Greene first described this as a species, but later reduced it to a variety 

 of Calif ornica ; while it is true that intermediate forms are found, the species is so 

 well marked that it is better to regard it as distinct. It has about the same range as H. 

 Calif ornica but seems to be more common. 



California: G. R. Vasey, 1875 ; Hooker & Gray, 1877; Rattan, 1866; M. E. Jones, 

 1882; C. G. Pringle, 1882; E. L. Greene, 1883; Congdon, 1885; M. K. Curran, 1888; 

 Alice Eastwood, 1893 and 1894 ; Brandegee, 1893 ; Mrs. Brandegee, 1892. 



§2. CUNEATAE. 



4. Horkelia Micheneri (Greene) Rydb. 



Potentilla Micheneri Greene, Erythea, 1: 5. 1893. 

 Greene, Man. Bay Reg. Bot. 117. 



