MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY Si 
California : (Lake Co.) Bolander, Nos. 33, 169 and 2655, 1863; Mrs. Curran, 1885 
(Mt. Hamilton); Mrs. Brandegee, No. 4. 
g. Horkelia platycalyx. 
Horkelia capitata Torr. Pac. R. R. Rep. 4: 84. 1856-7. 
Horkelia Californica paucifoliolata Wats. MSS. in Herb. 
InLustRATIONS: PLATE 64, f. 1; dissection of flower, f. 2; pistil, f. 3; stamen, f. 4; 
fruiting hypanthium and calyx, f. 5. 
Stem from a perennial caudex, stout, .5-1 m. high, glandular-pubescent, leafy, often 
tinged with red. Stipules ovate, 1-2 em. long, often toothed. Basal leaves several, more 
ie lef 
or less glandular-puberulent; leaflets 5-7 pairs, obovate, crenate, 1-2 cm. long. Stem 
leaves similar but with fewer leaflets. Cyme open and branched. Pedicels rather long, 
often 2.5em. Flowers 15-20 mm. in diameter. Hypanthium glandular-pubescent, sau- 
cer-shaped, a fourth to a third as deep as wide; bractlets ovate, a little smaller than the 
ovate-triangular sepals. Petals oblong or spatulate, exceeding the sepals by about a third. 
This species is nearest related to H. puberula and H. cuncata, but differs in the larger 
size of the plant and in the broad and flat hypanthium. It is a native of Southern and 
Lower California. The following specimens have been examined : 
California: J. M. Bigelow (Whipple Exp.); Wm. A. Wallace, 1854; G. R. Vasey, 
1880; 8. B. Parish, 1880; Wm. E. Wheelock, 1893 (type). 
Lower California: C. R. Oreutt, No. 840, 1883. 
1o. Horkelia puberula (Greene) Rydb. 
Potentilla puberula Greene, Pittonia, 1: 102. 1887. , 
Horkelia puberula Rydb. Bull. Torr. Bot. Club, 25: 55. 1898. 
IntustRATIoNs: Puatp 65, f. 1-2; dissection of flower, f. 3; pistil, f 4; stamens, 
f. 5; fruiting hypanthium and calyx, f. 6. 
Stems mostly several from the woody perennial caudex, 3-6 dm. high, branched, 
finely glandulat-puberulent, leafy. Stipules obovate, often toothed. Basal leaves nu- 
merous, puberulent or glabrate; leaflets 5-8 pairs, obovate or cuneate-oblong, 1-2.5 
em. long, coarsely and deeply toothed. Stem leaves similar but smaller and with fewer 
leaflets. Cyme open, branched, with rather spreading branches. Pedicels 5-15 mm. 
long. Flowers about 10 mm. wide. Hypanthium glandular-puberulent, cupulate, about 
half as deep as wide, in fruit about 8 mm. in diameter; bractlets broadly lanceolate, shorter 
than the ovate-lanceolate sepals. Petals oblong-spatulate, a little exceeding the sepals. 
