Pliacelia. HYDROPHYLLACE^. 161 



limb 3 lines in diameter : stamens and style slightly exserted : fruit not seen. — Proc. Am. 

 Acad. xi. 87. — Guadalupe Island, off Lower California (beyond our limits), Palmer. 



Var. interrupta, Gray, 1. c. Lower, and with pubescence more villous or hirsute : 

 leaves with fewer and sparser divisions (the larger crenately pinnatifid) and some very 

 small interposed lobes. — With the other form. 



■H- ++ Calyx more or less setose-hispid, in fruit usually much surpassing the capsule: the 

 divisions entire, but often dissimilar: seeds favose-pilted or in age tuberculate : style 2-|iarted. 

 (Species running together or ditticult to discriminate: leaves mostly 1-3-pinuately "divided and 

 incised: corolla liglit violet or bluisli, varying to wliite.) 



P. tanacetifolia, Benth. Erect annual, roughish-hirsute or hispid, not glandular, or 

 above slightly so, 1 to 3 feet high : leaves pinnately 9-17-divided into linear or oblong- 

 linear once or twice pinnately parted or cleft divisions, all sessile or nearly so ; the lobes 

 mostly linear-oblong : spikes cymosely clustered, at length elongated : very short fruiting 

 pedicels ascending or erect : calyx-lobes linear or linear-spatulate, not twice the length of 

 the ellipsoidal capsule : stamens and style conspicuously exserted : seeds with very narrow 

 pits bounded by thick walls. — Bot. Reg. t. 1696 ; Bot. Mag. t. 3703 ; Brit. Fl. Gard. n. ser. 

 t. 360. — California, very common, at least near the coast. Variable in foliage : the var. 

 temtlfolia, Thurber in Bot. Mex. Bound., is a common form, with tuie Tansy-like foliage. 

 Common garden annual. 



P. ramosissima, Dougl. About 2 feet high, decumbent or ascending from a perennial 

 root (according to E. L. Greene) ; the branches divergent, pubescent and more or less 

 viscid or glandular, or above hispid: leaves 5-0-divided or parted into oblong or narrower 

 pinnatifid-incised divisions : spikes glomerate, sliort and dense, little elongated in age : 

 flowers subsessile and in fruit ascending on the rhachis : stamens and style usually mode- 

 rately exserted : appendages to the corolla with a merely acute free apex : calyx-lobes 

 from linear-spatulate to obovate, twice or thrice the length of the ovate or short-ovoid 

 cai^sule: seeds oblong. — Benth. in Linn. Trans. I.e. 280; Hook. Fl. ii. 80 (but ovary not 

 glabrous in original specimens) ; Gray, Proc. Am. Acad. x. 310, & Bot. Calif, i. 508, excl. 

 var. P. tanacetifolia, Thurber in Bot. Mex. Bound. 143. — Washington Territory and Oregon 

 (tiirough the dry interior) to San Diego Co., California, and Arizona. In some forms very 

 near the foregoing. 



P. hispida. A foot or less high from an annual root, diffusely branching, hardly viscid, 

 setose-hispid with long and slender white bristles : leaves with fewer and coarser divisions 

 than the preceding, the uppermost sometimes merely laciniate-inciscd : spikes soon loose 

 and loosely paniculate, 2 or 3 inches long in fruit : flowers nearly all on short but manifest 

 and slender horizontal pedicels : stamens and style equalling or barely surpassing the 

 corolla : calyx-lobes narrowly linear witli attenuated base, nearly equalling the corolla, in 

 fruit 4 to 6 lines long and about 4 times the length of the globose capsule : seeds short- 

 oval. — P. ramosissima, var. hispida, Gray, 1. c. — Western part of California, from Santa 

 Barbara to San Diego, Nuttall, Wallace, Torreij, Cleveland. Bristles resembling those of 

 Borage. 



P. ciliata, Benth. Erect or ascending, a span to a foot or more high from an annual 

 root, more or less pubescent or sparingly hirsute above : stems scabrous : leaves pinnately 

 parted, or the lower divided and the upper merely cleft ; the divisions or lobes oblong, 

 pinnatifid-incised: spikes rather short and in fruit rather loose : pedicels short or hardly 

 any, ascending : stamens and the 2-parted style shorter than or not surpassing the 

 corolla : appendages of the latter with pointed tips : calyx-lobes from lanceolate to ovate, 

 more or less shorter than the white or bluish corolla, accrescent and becoming venose- 

 reticulated in age, then sparsely ciliate with short rigid bristles, 4 or 5 lines long, only 

 twice the length of the ovate mucronate capsule : seeds oval, favose. — Linn. Trans. 1. c. ; 

 Gray, 1. c. — California, from the Sacramento and the vicinity of San Francisco to Monte- 

 rey, apparently in shaded moist soil. 



* * * Flowers in loose and only slightly scorpioid racemes ; the pedicels equalHng or surpassing 

 the flowers : appendages of the very open corolla long and rather narrow, villous on the pd";e, 

 approximate between the stamens, from which they are remote : seeds Avith a rather fleshy 

 obscurely areolate testa. 



P. bipinnatifida, Michx. A foot or more high from a slender biennial root, erect, 

 paniculately branched, hirsute-pubescent and above mostly viscid and glandular : leaves 

 slender-petioled, green and thin, pinnately 3-7-divided ; the divisions ovate or oblong-ovate, 



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