HYDROPHYLLACE^. 255 



kes short, dense: corolla ochroleucous or bluish: stamens and style 

 ly moderately exserted: sepals linear-spatulate, twice the length of 

 3 capsule: seeds oblong. Mt. Diablo Range. June, July. 



10. P. Arthur!, Greene. Annual, decumbent or nearly prostrate, 

 stoutish branches 2 ft. long: herbage setose-pubescent, not viscid, 



e inflorescence hispidulous: leaves rather remotely pinnate, or some 

 rate, the lobes crenate-toothed: spikes many, solitary in the axils, 

 ort-peduncled: fl. biserial and crowded: sepals entire, very unequal, 

 <mall, at length partly enfolded by the accrescent rhombic- obov ate 

 ute fifth: corolla only a line broad, light blue: stamens not exserted. 

 Found by the side of a street in the western part of Oakland, in 1887, 

 v Arthur Simonds; the plant now extinct in that locality. 



11. P. ciliata, Benth. Erect and simple, or with several ascending 

 ranches, 1 1% ** high; stems scabrous; other parts pubescent or 

 >aringly hirsute : leaves pinnately parted or cleft, the divisions or lobes 

 jlong, piniiately incised: spikes short, at length rather loose, the 

 edicels short or none; sepals lanceolate to ovate, accrescent, in age some- 

 htil chartaceous, reticulate, 4 5 lines long and sparsely bristly-ciliate: 

 jrolla smallish, bluish; capsule ovate, mucronate: seeds oval, favose. 

 -Common, especially east of the Mt. Diablo Range, on the plains; but 

 Iso to the southward of San Francisco. May. 



12. P. suaveolens, Greene. Annual, stoutish, freely branching from 

 he base, the branches ascending, 1 2 ft. long: herbage very sweet-scented, 

 oft pubescent and glandular-viscid throughout: cauline leaves oval, 

 Coarsely-toothed, 1 in. long, on slender petioles of nearly equal length; 

 he lower with some lyrate lobes at or below the base of the main blade : 

 acemes solitary or in pairs, elongated, dense: sepals spatulate, entire, 

 '4 inch long, exceeding the 4-seeded capsules: corolla bright blue, 

 narrowly funnelform, % in. long, the limb one half as broad: seeds oval, 

 black, deeply favose-pitted. At the Petrified Forest, Sonoma Co. 



* * Seeds 612 or more on each placenta; testa not rugose, 

 but areolate-reticulate. 



13. P. circinatiformis, Gray. Erect, sparingly branching from the 

 base, 6 10 in. high, puberulent and very hispid: leaves ovate to oblong- 

 lanceolate, parallel-veinsd: racemes dense: sepals linear or linear-spat- 

 ulate, enlarging in age, greatly exceeding the capsule : corolla dull- white, 

 very small, scarcely wider than funnelform- tubular, 23 lines long; 

 calyx when mature 5 lines or more : capsule ovate, acute or mucronate, 

 6 16-seeded: seed scrobiculate. Plentiful near the summit of Mt. 

 Diablo; also reported from Mt. Hamilton, but a rare plant. June. 



14. P. divaricata (Benth.), Gray. Diffusely branching^ from the 

 base, the branches 6 18 in. long, more or less pubescent and hirsute: 



