Phacelia. HYDROPHYLLACE^E. 507 



Var. calycosa, Gray, 1. c. Divisions of the calyx larger and more foliaceous, at 

 length witli narrowed base, obovate-spatulate or oblong, Avhen old reticulated. 



Very common in dry open grounds, extending north to British Columbia, east to and beyond 

 the Rocky Mountains, southward into Mexico, and even to Patagonia. A very variable species ; 

 the more dwarf states sometimes with nearly leafless and scape-like stem. The variety may be 

 common in California ; but thus far seen only in a cultivated specimen raised by E. Hall, and 

 wild from Borax Lake (Torrcy), and foot-hills, Mariposa Co., A. Gray ; also, a form with large 

 and green entire and ovate leaves, collected on the Mission hills, San Francisco, by Kellogg. 



3. P. Breweri, Gray, 1. c. Foliage, habit, and pubescence as in the foregoing, 

 but smaller and more slender, from an annual root : leaves seldom an inch long, 

 many of them 3 - 5-parted, the lanceolate lateral lobes ascending : corolla (barely 3 

 lines long) more broadly campanulate, blue or violet, nearly twice the length of the 

 linear calyx-lobes : filaments glabrous, a little shorter than the corolla. 



On Monte Diablo, on dry and soft sandstone, Breiver. In character this approaches the Chilian 

 P. brachyantha, Benth. ; but that has softer pubescence, broader and almost all entire leaves, 

 longer calyx, narrower corolla, and still shorter stamens. 



4. P. humilis, Torr. & Gray. A span high, diffusely branched from a slender 

 annual root, pubescent, or the inflorescence hirsute : leaves spatulate-oblong or 

 oblanceolate, rather obtuse, all entire, or rarely some of the lower with 1 to 3 lateral 

 ascending lobes, the veins lax and sparingly branching : spikes at length slender, 

 solitary or loosely panicled : corolla (2 or 3 lines long) bright indigo-blue, rather 

 deeply 5-lobed, surpassing the linear calyx-lobes : filaments moderately exserted, 

 glabrous or bearded with very few hairs. Pacif. R. Rep. ii. 122, t. 7; Watson, 

 Bot. King Exp. 250. 



Var. calycosa, Gray, 1. c. A less-branched and more slender form, with corolla 

 apparently pale, and the calyx-lobes dilated-spatulate, as in the analogous variety 

 of P. circinata. 



Northeastern part of the State ; Sierra and Nevada Counties, at 5,000 to 6,000 feet (Beckwith, 

 Bolander, Lemmon) : also in the adjacent parts of Nevada, Anderson, Watson, &c. The var. 

 calycosa, from near Mono Lake, Bolander. Only in Bolaiider's specimens have any divided leaves 

 been seen. 



-t- -f- Leaves simple, rounded and cordate, incisely lobed and serrate. 



5. P. malveefolia, Cham. Rather tall and stout, loosely branching, hispid with 

 spreading or rettexed stinging hairs, and the foliage more or less pubescent : root 

 unknown : leaves green, membranaceous, all petioled, somewhat palmately 5-9- 

 lobed, acutely toothed (2 inches or more in diameter) : spikes solitary or in pairs : 

 corolla (pale or white (?), 3 or 4 lines long) surpassing the unequal linear and spatu- 

 late calyx-lobes : stamens much exserted : seeds alveolate-scabrous. 



Bay of San Francisco, GTisimisso (Linruea,, iv. 494) ; not since detected, until lately collected by 

 Dr. Kellogg, at Potrero. The bristles appear to sting like those of a Loasa. 



+- -t- + Leaves once to thrice pinnatifid or pinnately compound, oblong or narrower 

 in general outline : style ^-parted : corolla light violet or blue, varying to white : 

 calyx (excepting the first species) bristly-hispid, its lobes not rarely dissimilar. An- 

 nuals, the species difficult to discriminate. 



6. P. crenulata, Torr. A span or a foot high, viscid-pubescent and very 

 glandular, and the calyx hirsute but not hispid : leaves oblong or linear-oblong in 

 outline, crenately lobed or pinnatifid, or at base lyrately divided ; the lobes short 

 and rounded, the larger ones oblong and sometimes crenately incised : spikes clus- 

 tered : corolla rotate-campanulate, bright violet : stamens and style much exserted : 

 calyx-lobes oblong-linear or somewhat spatulate, equalling the globular capsule: 

 seeds with corky-thickened and transversely corrugated inflexed margins and central 

 ridge. Watson, Bot. King Exp. 251. 



Near the border of the State in Washoe Co., Nevada, Lemmon. The deeply pinnatifid form : 

 occurs through Nevada to Arizona and New Mexico. 



