256 HYDROPHYLLACE^E. ^WATERLEAF FAMILY,) 



3. P. glandulosa, Xutt. Viscid-pubescent and glandular, softly if at 

 all hirsute, a span to a foot or more high : leaves irregularly and interruptedly 

 twice pinnatifid, or below divided; the numerous lobes small, somewhat incised, 

 obtuse : corolla bluish, purplish, or white, with lobes shorter than the tube : 

 stamens and style moderately or conspicuously exserted. — Gravelly soil, 

 Colorado to Arizona and Texas. 



Var. Neo-Mexicana, Gray. Lobes of the corolla either slightly or 

 conspicuously erose-denticulate. — P. Neo-Mexicana, Thurber. 



-i- •*- Calyx more or less setose-hispid. 



4. P. Popei, Torr. & Gray. Viscid-pubescent and hispid with spread- 

 ing hairs, a span to a foot high: leaves bipinnately parted or pinnatifid ; the 

 divisions pinnatifid, with 5 to 9 short, obtuse lobes: calyx-lobes a little longer 

 than the globose capsule: corolla white, campanulate, its lobes entire: sta- 

 mens at length much exserted. — Pacif. R. Rep. ii. 172. Colorado and south- 

 ward. Included under P. glandulosa, Xutt., in Synopt. Fl. ii. 160, but restored 

 in Proc. Am. Acad. xix. 87. 



§2. Ovules and seeds several. (6 to 12) or more numerous on each placenta: 

 appendages of the mostly campanulate corolla in the form of 10 vertical salient 

 lamella. — Eutoca. 



5. P. sericea, Gray. A span to a foot high from a branching caudex, 

 silky-pubescent or canescent, or the simple virgate stems and inflorescence 

 villous-hirsute, rather leafy to the top : leaves pinnately parted into linear or 

 narrow-oblong numerous and often again few-cleft or pinnatifid divisions, silky- 

 canescent or sometimes greenish ; the lower petioled ; the uppermost simpler 

 and nearly sessile : short spikes crowded in a naked spike-like thyrsus • corolla 

 violet-blue or whitish: stamens long exserted: capsule a little longer than the 

 calyx. — Mountains of Colorado, Nevada, and northward. 



6. P. Menziesii, Torr. A span to a foot high, at length paniculate- 

 branched, hispid or roughish-hirsute : leaves mostly sessile, linear or lanceolate 

 and entire, or some of them deeply cleft ; the lobes few or single, linear or 

 lanceolate, entire : spikes or spike-like racemes thyrsoid-panicut'ate, at length 

 elongated and erect : corolla bright violet or sometimes white : stamens about 

 the length of the corolla : capsule shorter than the calyx. — Watson, Bot. King 

 Exp. 252. Montana to Utah and westward. 



4, NAMA, L. 



Low herbs : the corolla purple, bluish, or white. In ours the corolla is 

 short-funnelform and hardly exceeding the calyx, the flowers are in the forks 

 of the stem, and the leaves are entire. 



l. N. dichotomum, Ruiz & Pav., var. angustifolium, Gray. 

 Erect, a span high, minutely pubescent, glandular : stem repeatedly forked 

 and with a nearly sessile flower in each fork : leaves narrow, linear or nearly 

 so: sepals narrowly linear : seeds marked with about 5 longitudinal rows of 

 large pits, from 4 to 6 in each row. — Proc. Am. Acad viii. 284. Colorado 

 and New Mexico. 





