104 SYNOPSIS OF THE FLORA OF COLORADO. 



erect hairs, shorter than the calyx; seeds often solitary, deeply pitted. 

 Hall <G Harbour, 430. Georgetown, Dr. ftmith. Denver, Porter. Plains 

 of the Platte, Coulter. 



PIIACELIA INTEGKBIFOLIA, Torr. DC. Prod., 9, p. 290. Annual, erect, 

 '-15' high, branching above and sometimes at the base, viscidly glandu- 

 lar pubescent ; leaves l'-2' long, varying from oblong to ovate, cordate 

 or truncate at base, simple or crenately-dentate or donbly serrate, or 

 sometimes more or less deeply pinnatifid, and the segments often 

 toothed, the upper at times nearly sessile ; sepals ovate, ciliate-hispid 

 and glandular ; corolla -segments oblong, the appendages short and en- 

 circling the base of the filaments; stamens exserted, naked; style 

 united to the middle; ovary oblong, hairy; capsule globose, minutely 

 pubescent and glandular, equaling or slightly exceeding the calyx ; seeds 

 4, minutely warted on the back and transversely ridged on the face. 

 Southeastern Colorado. F. IL Diffenderffer. 



PHACELIA POPEI, Torr. & Gr.Pacif. R. R. Surv. 2, p. 172, t. 10. Vis- 

 cidly pubescent, hispidulous with spreading hairs; stems 4'-l high, 

 branching from a biennial root ; leaves bipiimately parted or pinnately 

 cut, 2 / -4 / long, segments pinnatifid, 3 y/ -10 /7 long, or the lower ones re- 

 duced in size, lobes 5-9, short, obtuse; spikes corymbose, densely- 

 flowered ; segments of the calyx spatulate, about half the length of the 

 white campanulate corolla and a little longer than the globose capsule ; 

 stamens at length much exserted ; filaments naked ; seeds 4, oval, with 

 the inner face strongly bilunate, the central keel veiy prominent, pitted, 

 1J" long. Hall & Harbour, 440. Xear Denver, Coulter. Gray's Peak, 

 Dr. Smith. 



PHACELIA TANACETIFOLIA, Benth. DC. Prod. 9,}). 200. Annual, 3'-2- 

 high, suberect ; branches lax and slender, more or less scabrous-pubes- 

 cent, or the stem and branches glabrate ; leaves variable, 2 / -6 / long, 

 1-2-pinnatifid, the 3-7 pairs of segments oblong and incised dentate : 

 calyx-lobes linear or lanceolate, usually dilated and foliaceous above, 

 very pilose, especially on the margins ; corolla campanulate, 3" long, 

 scarcely exceeding the calyx, the appendages small, and encircling the 

 filaments ; style hairy at base, bifurcate to below the middle ; ovary 

 hairy, 4-ovuled ; capsule 2" long, ovate, acute, pubescent ; seeds li" 

 long, pitted. Wet Mountain Valley, Brandegee. South Park, Coulter. 



PHACELIA NEO-MEXICANA, Thurber., Bot. Mex. Bound. Surr., p. 143. 

 Stem. erect, l-2 high, hispidly-pilose and viscidly-pubescent ; leaves 

 pinnatisect, 3 / -4 / long, thin, the segments rather distant and unequal, 

 about I' long, incised-dentate, lobes ovate, subdentate, mostly obtuse ; 

 racemes spike-form, densely- flowered, corymbose ; flowers subsessile : 

 calyx not enlarged in fruit, lobes oblong f corolla scarce twice longer 

 than the calyx, small, campauulate, margin minutely erose dentate : 

 stamens scarcely exserted; filaments smooth ; style cleft to the middle, 

 hairy beloAv ; capsule globose-ovate, 3" long ; seeds very minutely pitted! 

 nearly 3" in length. Plains of the Platte, Coulter. Garden of the Gods, 

 Porter. 



PIIACELIA SERICEA, Gr. (Eutocasericea, Grah.7>(7. Protf.,9,p. 204.) 

 Perennial, canescent with a somewhat silky pubescence appressed upon 

 the leaves; steins G'-2 high, rather stout, simple, terminating in a nar- 

 row, compound raceme; leaves mostly oblong, 2 / -3 / long, incised-pin- 

 natifid, segments coarsely cut or entire, petioles hispid-ciliate; racemes 

 mostly short-peduncled, \-\J long in fruit, forming a compound raceme, 

 3 / -12 / in length; calyx-lobes linear, exceeding the pedicels, shorter 

 than the corolla which is 3" long, campanulate, blue or rarely white, 



