36 Contributions from the Gray Herbarium 
4a. var. IMBRICATA (Greene) Jepson, Fl. Middle Cal. 439 (1901). 
P. imbricata Greene, Eryth. i. 127 (1893). P. circinata (Willd.) 
Jacq., var. calycosa Gray, Proc. Am. Acad. x. 317 (1875). P. 
imbricata Greene, var. condensata Brand and var. caudata Brand, 
Univ. Cal. Publ. Bot. iv. 220 (1912). P. stimulans Eastw. Proc. 
Cal. Acad. Sci. ser. 3, ii. 291 (1902). P. virgata Greene, var. ampli- 
ata Greene, Eryth. iv. 55 (1896). — Butte to San Luis Obispo 
. also . 
Co., June 6, 1913, Heller, no. 10786; Po Co., June 7, 1916, 
Heller, no. 12374; St. Se May 2, 1897, Jepson; also April, 
1903 , Baker, nos. 2601, 2604; Vanewille, Solano Co., 1902, Heller 
& Brown, no. 5408; Los Gatos, May 14, 1904, Heller, no. 7415; 
olame, San Luis Obispo Co., June, 1887, Lem mon, no. 4609; 
Yosemite, 1872, Gray; Kaweah River, Tulare Co., June 5, 1904, 
Culbertson, no. 4200; Cache Creek, Yolo Co., May 8, 1903, ‘Baker, 
2980. 
P. californica is rather constant in character in central Cali- 
fornia but is extremely variable where it occurs to the north and 
south of the range of the typical form. These variations have been 
treated by Brand as forms of P. magellanica and it seems worth 
while to maintain them. They grade insensibly into each other, 
however, and connect P. californica, var. imbricata with P. hetero- 
phylla through the forma vinctens. 
KEY TO THE FORMS OF P. CALIFORNICA 
spi behest obtuse or acutish; stems 3 dm. or more high; 
Mal ee ee 4b. f£. bernardina. 
oe ge ee to linear-lanceolate very acute, or if ovate 
usish stems much less than f ay . hi ch. 
Sub “arse perennial of southern California................. 4c. f. Ballit. 
iennials or perennials of low aiitieles in lope and 
northern California. 
Perennial; inflorescence not virgate..................+0:: f. egena. 
Biennial; ‘inflorescence virgate or the racemes elongate. . os f. vinctens. 
4b. f. bernardina (Greene), comb. nov. P. virgata Greene, var. 
bernardina Greene, Eryth. iv. 55 (1896). P. magellanica (Lam. 
Cov., f. bernardina (Greene) Brand, Univ. Cal. Publ. Bot. iv. 218 
(1912 Tee — Southern and Lower California. — CALIFORNIA: Sul- 
phur Mts., June 1-2, 1908, Abrams & McGreg o. 50; San 
Bernardino, May 6, 1896, Parish, no. 4150; patton eee! 21, 1903, 
Abrams, no. 3794; Erskin Creek, 1897, Purpus, no. 5108. Mexico: 
ars Valley, Lower California, 1883, ‘Oreu 
‘. rand), comb. nov. P. lage (Lam.) Cov 
f. Bate Brand, Paaischivwk ¢ iv. 251. 99 (1913); f. patula Brand, 
