HYDROPHYLLACE^E. 415 



d. Leaves, &c., as of last preceding, but destitute of glands or viscidity: sepals a little or moder- 

 ately surpassing the capsule: seeds with a scabrous reticulation, the uneven meshes being some- 

 what muriculatc at the junctions, the ventral ridge and margins not tuberculate nor corrugate. 



P. Popei, TORR. & GRAY. Habit and dissected foliage of P. Neo-Mexicana (with which it 

 has been confounded) : corolla-lobes entire, little surpassed by the stamens : sepals spatulate : 

 capsule globose. Pacif. K. Rep. ii. 172, t. 10; Gray, Proc. Am. A cad. xx. 303. On, 

 p. 160 wrongly referred to P. ylandulosa. High plains of W. Texas (first coll. by Gen. 

 Pupe) to New Mexico and the Mexican, borders, coll. Wright, Tlturber, Rothrock, lieverclion 

 (in Curtiss distrib. as P. ylandulosa), Havard. 



P. COngesta, HOOK., p. ICO. Calyx-lobes from linear to oblanceolate : capsule ovoid. The 

 common form, with comparatively few and broad lobes to the leaves, passes through that 

 referred by A. DC. to P. tanaceti folia, into 



Var. dissecta. Leaves more finely once or twice pinnately divided or parted into 

 more numerous segments and lobes, with small interposed lobelets. P. ylandulosa, var. 

 Neo-Mexicana, Watson, Proc. Am. Acad. xviii. 118. Dallas, Texas, licrcrchon (the extreme 

 form in distrib. Curtiss, 2128), to the Rio Grande, Palmer, &c., and adj. Mex. 



H- -H- Seed commonly solitary (the other cell and the companion of the fertile ovule aborting), 

 nearly terete and with a closed ventral groove : sepals heteromorphous, surpassing the small cap- 

 sule : pedicels short, ascending or erect when fructiferous: annual, not setose-hispid. 



P. platyloba, GRAY. Minutely pubescent, or the inflorescence sparsely hirsute, obscurely 

 viscidulous : stem slender, a foot or two high, sparsely leafy : leaves piunately divided ; the 

 oblong or lanceolate divisions either crenately lobeil and toothed or once or twice pinuatifid, 

 small : fructiferous spikes becoming loose and slender : calyx only 2 lines long when in 

 fruit; sepals all with narrow or petiole-like base, one or two dilated into a rounded or 

 obovate entire or 2-5-cleft lamina, the others narrowly or broadly spatulate : corolla some- 

 what rotate, bluish, little surpassing the calyx. Proc. Am. Acad. xvii. 223, now extended. 

 California, in Fresno Co., Parr//, and Mariposa Co., Congdon. 



H- -H- -H- Seeds rounded on the back, acute-angled or obtuse ventrally, the two sides slightly 

 when at all concave. (Those of P. phyllomanica unknown.) 



= Herbage soft-pubescent and partly villous or soft-hirsute, not hispid, and with little or no vis- 

 cidity: sepals or most of them pinnately 3-5-partecl or cleft: cymes crowded : insular species. 



P. floribunda, GREENE. Annual, a foot or two high, freely branched, a little glandular : 

 leaves green, pinnately divided into 6 or 8 pairs of linear-oblong segments (with some inter- 

 posed lobelets), and these nearly bipinnatifid : lobes of the sepals narrowly spatulate, nearly 

 equalling the violet-blue open-cam pan ulate (2 or 3 lines long) corolla: stamens little ex- 

 serted : seeds scrobiculate and somewhat tuberculate, less than a line long. Bull. Calif. 

 Acad. i. 200. P. phi/lloinanica, var. interrupta, Gray, Proc. Am. Acad. xi. 87, & p. 161. 

 Island of San Clemente, off San Diego, Nevin & Li/on, 1885. (Guadalupe Island, Palmer, 

 Greene.) 



P. phyllomanica, GRAY, p. 160. Perennial, with suffrutescent base, 3 to 6 feet high, very 

 leafy, tomentulose-canescent : flowers nearly double the size of those of P. floribunda. 

 Still extra-limital, again collected, just coming into blossom, on Guadalupe, by Greene, 1885. 



= = Eoughish-pubescent, at least the inflorescence beset with some strong-hirsute or setose- 

 hispid hairs: sepals entire (with rare exceptions), longer than the capsule. 



a. Annual, with coarsely lobed foliage: pedicels (either short or slender) in the at length elongated 

 and fruiting inflorescence horizontal: sepals very narrow, filiformly attenuate downward, soft- 

 hispid or barbate with very long hairs, very much surpassing the small globose capsule. 



P. hispida, GRAY, p. 161. Common through S. California, extending to Arizona. Corolla 

 purplish or pale rose-color. Seeds roughish-scrobiculute. 



b. Perennial, with spreading or decumbent stems and rather coarsely lobed foliage: short pedicels 

 ascending in the dense and not much elongated fruiting spikes: sepals spatnlate or broader, one 

 or two often much dilated, all fully twice the length of the ovoid or suhglobose capsule: corolla- 

 appendages narrow]}' quadrate-oblong, adnate up to the throat and truncate. 



P. ramosissima, DOUGL. , p. 161. A species of considerable diversity in foliage, vis- 

 cidity, &c., and of wide geographical range, now pretty well defined. Capsule in the Northern 



