468 HYDROPHYLLACE.E phacelia 



cernes several, terminal and subterminal : corolla nearly cylindrical, either 

 deep purple or ochroleucous: mature calyx-segments narrowly oblanceo- 

 late, or some of them more dilated at summit, hispid with spreading hairs, 

 without finer pubescence : capsule small, ovate, acuminate mostly 4-seeded. 

 In rich moist soil, southeastern Oregon and adjacent California. 



P. heterophylla Pureh Fl 140. P. circinata. Jacq. f Hispid and the 

 foliage canescent: stem stout, 6-24 inches high from a perennial root: 

 leaves from lanceolate to ovate, acute, pinnately and obliquely striate- 

 veined, the lower tapering into a petiole and commonly some of them 

 with 1 or 2 pairs of small lateral leaflets: inflorescence hispid; the dense 

 spikes thyreoid- congested : corolla bluish, longer than the oblong-lanceolate 

 or linear calyx-lobes: filaments much exserted, sparingly bearded. Dry 

 grounds and rocky ridges, Brit. Columbia to California. 



P. virgata Greene Erythea iv, 54. Hispid and the foliage strigose : 

 stem usually solitary, erect and strict, simple, 1-2 feet *igb from an 

 annual or biennial root : leaves pinnate or the upper ones simple and entire, 

 leaflets lanceolate, acute or acuminate, 6-12 lines long, strongly pinna' e- 

 veined : flowers in dense glomerules in a long virgate spike or thyrsus ; in- 

 florescence hispid; sepals oblong-lanceolate, corolla white or yellowish, 

 little exceeding the calyx; filaments long exserted, often curved or twisted, 

 pubescent. Dry ground, southwestern Oregon. 



P. leucophylla Torr. Frem. Rep. 95. Perennial by a stout root stock, 

 pale, densely silky-pubescent, the hairs appressed or ascending : stems sim- 

 ple or branched, 12-18 inches high: leaves lanceolate to oblong, entire; 

 pinnately veined, 2-4 inches long, 4-12 lines wide, the lower long-petioled, 

 the upper sessile or nearly so; spike-like branches of the scorpioid cymes 

 very dense, nearly straight and 1-3 inches long when expanded : flowers 

 sessile, very numerous, about 4 lines high : calyx-lobes hispid, oblong-lan- 

 ceolate or linear, somewhat shorter than the white or bluish, 5-lobed corolla; 

 corolla-appendages conspicuous, in pairs between the filaments; stamens 

 exserted glabrous; ovules 2 on each placenta; capsule ovoid : In dry soil, 

 Idaho to Dakota and Nebraska. 



P. humilis T. & G. Pac. R Rep ii, 122. Pubescent or the inflorescence 

 often hirsute : stem 8-10 inches high from an annual root, diffusely bran- 

 ched from the base : leaves spatulate-oblong or oblanceolate. rather obtuse; 

 the lower rarely with 1 or 2 lateral ascending lobes, the veins branching: 

 spikes loosely paniculate or solitary, in age rather slender: pedicels either 

 all very short, or the lower sometimes almost as long as the calyx : corolla 

 indigo-blue, rather deeply lobed, surpassing the linear calyx-lobes : fila- 

 ments moderately exserted, glabrous or sparingly bearded above : capsule 

 ovate, acute, 1% lines long, 4-seeded: seeds a line long, minutely pitted. 

 Eastern Oregon to Nevada and California. 



■*- +- Leaves simple, all petioled rounded-cordate, somewhat pal- 

 mately lobed or incised, the lobes serrate. 



P. malvseflora Cham. Linn, iv, 494. Rather tall and stout, hispid with 

 spreading or reflexed bristles and the foliage more or less pubescent : leaves 

 green and membranaceous, round-cordate, incisely 5-9-lobed, acutely 

 toothed, somewhat palmately ribbed at base : flowering spikes solitary or 

 geminate, an inch long: corolla 3-4 lines long, white, longer than the un- 

 equal linear and spatulate calyx-lobes: stamens exserted: seeds alveolate- 

 scabrous. Along the coast, southern Oregon and California. 



P. Rattaui Gray Syn, Fl. Supp. 413. Hispid with slender stinging 

 bristles throughout : root annual : stem slender and weak, 6-18 inches high : 

 leaves oval to oblong-ovate, with truncate or barely snbcordate base, in- 

 cisely somewhat lobed and crenate, only the lower palmately veined at 



