254 HYDBOPHYLLACE.S:. 



a pair of pinnae, rarely 2 pairs, at base, petiolate, without any conspic- 

 uous parallel veins: racemes geminate or ternate, short but not lax: 

 corolla small, ochroleucous: sepals oblanceolale: capsule 2-seeded: seed 

 deeply pitted. — Shady ravines and along stream banks. June — Aug. 



■4— •)— Annuals; leaves entire, or with shallow lobes. 



4 P. malvsefolia, Cham. Annual, the herbage of a light green, 

 pubescent, very hispid with spreading or refiexed slinging hairs: leaves 

 round-cordate, slightly 5— 9-lobed, sharply toothed, 1—3 in. long: spikes 

 solitary or geminate: corolla 3—4 lines long, yellowish white, longer 

 than the unequal linear and spatulate sepals: stamens exserted: capsule 

 4-seeded: seeds alveolate-scabrous. — Damp shades, from San Francisco 

 and Alameda counties southward. June — Sept. 



5. P. Rattani, Gray. Smaller than the last, beset with more slender 

 bristles: leaves ovate or oval, with truncate or subcordate base, incisely 

 lobed or crenate: calyx of 4 spatulate sepals o,nd one larger and obovate: 

 corolla whitish, little more than 2 lines long: stamens and style included: 

 seeds small. — Northern part of Sonoma Co., on Bussian River, etc. 



6. P. Breweri, Gray. Slender, diffusely branched, the stems 6 — 10 

 in. long, canescently pubescent and hispidulous: racemes slender, long 

 and lax: sepals linear: corolla open-campanulale, violet, twice as long as 

 the calyx: filaments not exserted: capsule ovate, acute, mostly 1-seeded: 

 seed favose. — Mt. Diablo, Mt. Hamilton and southward. May, June. 



H— -i— -t- Annuals (except n. 9); leaves oblong or narrower, pinnately lobed, 

 toothed, or compound, and the lobes or divisions toothed or incised. 



7. P. distans, Benth. Usually rather slender, branching, 1 — 2J£ feet 

 high, the branches when present decumbent: leaves ample, very finely 

 and compoundly dissected: spikes mostly scattered, solitary or geminate: 

 sepals unequal, linear to spatulate, 1 or 2 more dilated upwards: corolla 

 dull yellowish while, 3 — 4 lines long, rotate-campanulate; the internal 

 appendages broadly semiovate, with a free pointed tip: stamens little 

 exserted: capsule globular: seeds rugose- tuberculate. — Plentiful at 

 Alameda; also in Marin Co. and southward. May — July. 



8. P. tanacetifolia, Benth. Stouter than the last, seldom branching, 

 erect: leaves less ample and less dissected: spikes all clustered and ter- 

 minal: sepals equal, linear, beset with rigid bristles: corolla open- 

 campanulate, 1 3 in. long, lavender-color or lilac-purplish: inner append- 

 ages wholly adnate: stamens well exserted. — Mostly in fields and open 

 plains of the interior. May, June. 



9. P. ramosissima, Dougl. Stems clustered and decumbent or 

 ascending, from a perennial root: herbage pubescent and viscid-glandular : 

 leaves divided into oblong or narrower pinnatifid-incised divisions: 



