hydkophyllacej:. 255 



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

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

 the capsule: seeds oblong. — Mt. Diablo Bange. June, July. 



10. P. Arthuri, Greene. Annual, decumbent or nearly prostrate, 

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

 the inflorescence hispidulous; leaves rather remotely pinnate, or some 

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

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

 four small, at length partly enfolded by the accrescent rhombic-obovate 

 acute 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, 

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



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

 branches, 1 — 1% ft- high; stems scabrous; other parts pubescent or 

 sparingly hirsute : leaves pinnately parted or cleft, the divisions or lobes 

 oblong, pinnately incised: spikes short, at length rather loose, the 

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

 what charlaceous, reticulate, 4 — 5 lines long and sparsely bristly-ciliate: 

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

 — Common, especially east of the Mt. Diablo Bange, on the plains; but 

 also to the southward of San Francisco. May. 



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

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

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

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

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

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

 % 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 6 — 12 or more on each placenta; testa not rugose, 

 but areolale-reticulate. 



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

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

 lanceolate, parallel-veined: 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, 2—3 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: 



