168 HYDROPHYLLACE^E. Phacelia. 



++ Corolla broadly open-campanulate, violet or blue, not rarely nearly equalled by the stamens 

 and style. 



P. CUTVipes, Torr. Diffuse, 2 to 4 inches high, hirsute and puberulent : leaves from 

 oval to lanceolate, mostly shorter than the slender petiole : racemes simple, at length 

 loose, the lower pedicels as long as the calyx : style cleft to the middle : ovules 8 or 10 to 

 each placenta. Watson, Bot. King, 252; Gray, I.e. Foothills of the desert region, 

 W. Nevada (Carson City, Watson), and Owens Valley, California, Dr. Horn. Habit of P. 

 humilis. Blade of the leaf to 10 lines long. Corolla barely 3 lines high. Hispid calyx 

 in fruit becoming 4 and 5 lines long. Pedicels from a line to 5 lines long in fruit ; the 

 lowest sometimes sigmoid-curved (deflexed and then ascending); and petiole sometimes 

 " more or less abruptly curved," whence the specific name, which ordinarily seems rather 

 inappropriate. 



P. divaricata, Gray, 1. c. Diffusely spreading, a span high, more or less hirsute and 

 pubescent : leaves ovate or oblong, mostly longer than the petiole, occasionally 1-2-toothed 

 or lobed at base, the veins curving upwards : spikes or racemes at length loose ; the pedi- 

 cels usually much shorter than the calyx : style 2-cleft at the apex : ovules 12 to 20 on 

 each placenta (or rarely fewer ?). Etttoca divaricata, Benth. 1. c. ; Lindl. Bot. Reg. 1. 1784 ; 

 Hook. Bot. Mag. t. 3706. E. Wrangeliana, Fisch. Meyer ; Don, Brit. Fl. Card, ser. 2, 

 t. 362, a form (var. Wrangdiana, A.DC.) with leaves inclined to be lobed or 1-2-toothed. 

 California, common about San Francisco Bay. Leaves 1 to 3 inches long. Flowers 

 pretty large ; the expanded corolla often three-fourths of an inch broad. 



-1 -i- i -i Leaves entire or somewhat cvenate-lobed or toothed, slender-petioled. the veins di- 

 vergent or commonly obsolete : pubescence viscid or glandular: corolla narrow-campanulate or 

 somewhat funnelform, the appendages of the tube linear or oblong and nearly free from the 

 unequal glabrous filaments: style 2-cleft only at the apex. (Species peculiar to the interior 

 desert region.) 



++ Flowers and the very dense short spikes closely sessile : calyx equalling the narrow corolla: 

 leaves thickish, spatulate-oblong. 



P. cephalotes, Gray, 1. c. Divaricately branching from the very base, nearly prostrate, 

 more or less viscid-pubescent and the calyx, &c., hispid-hirsute : leaves chiefly radical and 

 at the bifurcations, apparently fleshy-coriaceous, nearly veinless, oblong or spatulate, 

 entire (about half an inch long and tapering into the commonly longer petiole) : sessile 

 spikes or heads radical and in all the forks, at length oblong : calyx-lobes spatulate-linear, 

 twice the length of the oval obtuse 8-10-seeded capsule : seeds with a lax cellular-reticu- 

 lated pellicle. P. cunipes, Parry in Am. Naturalist, ix. 16, not Torr. Southern Utah, 

 Bishop, Mrs. Thompson, Parry. Corolla 2 lines long, cylindraceous, white or yellowish, with 

 the short limb blue or purplish ; the internal appendages linear. Earliest spike radical, 

 much shorter than the subtending leaves ; the first internode of the prostrate branches 

 2 to 4 inches long. 



H- -H- Flowers not so crowded, more or less racemose : calyx conspicuously shorter than the some- 

 what open-funnelform or campanulate corolla, a little longer than the obtuse capsule: leaves 

 thickish, apparently fleshy-coriaceous, roundish or oval, the veins mostly obscure. 



P. demissa, Gray, 1. c. Diffusely branched from the base, less than a span high, viscid- 

 puberulent or glabrate : leaves from orbicular to obscurely reniform or subcordate, entire 

 or repand, half inch in diameter: flowers rather few and short-pedicelled in a sessile or 

 verv short-peduncled spike which is mostly shorter than the petioles and the internodes of 

 the branches : corolla apparently white, barely 2 lines long, little exceeding the linear 

 calyx-lobes; its short appendages narrowly oblong: capsule (2 lines long) short-oval, very 

 obtuse, about 10-seeded : seeds oblong, proportionally large, alveolate-reticulated. New 

 Mexico, Palmer. 



P. pulchella, Gray, 1. c. Diffusely branched, barely a span high, merely viscid-puberu- 

 lent : leaves roundish-ovate or obovate, entire or crenate-toothed. obtuse or acutish at base, 

 half an inch or less in length : flowers numerous in the at length elongated panicled 

 racemes : pedicels mostly shorter than the calyx : corolla deep purple ( with a yellowish base), 

 commonly thrice the length of the spatulate calyx-lobes : capsule narrowly oblong, very 

 obtuse, about 30-seeded. P. crassifolia, Parry in Am. Naturalist, 1. c., not Torr. Southern 

 Utah, on gypseous clay knolls, Parri/. A showy vernal species. Corolla 4 or 5 lines long, 

 with an ampler limb than in the related species ; the appendages conspicuous, semi-oval. 

 Seeds not half the size of those of the preceding species, short-oval, pitted. 



