470 HYDROPHYLLACEAE phacelia 



ov3te, hardly mucronate: seeds 10-18, wing-angled. In the high moun- 

 tains of Brit. Columbia to California. 



P. Sericea Gray Am. Jour. Sci, ser. 3, xxxiv, 254. Stems 8-12 inches 

 high from a branching perennial caudex, silky-pubescent or canescent or 

 the simple virgate stertis atid inflorescence villous-hirsute, leafy to th^ top : 

 leaves pjnoatiely' parted into linear or narrow-oblong numerous and often 

 again few-cleft or pinnatifid divisions, silky-cariescerit or sometimes grefen- 

 ish: the Ipwer pptiole4,; tjie uppermost siijipler and nearly sessile: short 

 spikes crojyded ijj a i)ake4 spike-like thyrsus: calyX7lobes linear, minutely 

 hispid: corolla blue or whifish, very open-campanulate. cleft to the mid- 

 dle, marc^scent-persistprit ; its appendages oblong, vertical, wholly free 

 from t))p filampnis : stamens lofig^exserted ; anthers short-oval : style 2- 

 cleft at the apex: capsulg oyate, shortracuminate, a little longer than the 

 calyx ^nd marcescent corolla, 12-18 seeded: seeds ovate-oblong, terete, 

 acutisl), Iqfigitudinally cosfafe and transversely alveolate-reticulated. On 

 hig^ mouptalns, Oregon and Washington to the Arctic regions and the 

 Rocky Mountains. 



P. Frai^^finijl Gray Man. ed. 2, 329. Villous-pnbescent throughout: 

 steni, jfiect, 6-18 ii)ch«s high, fr.QJiJ an gnnual root, sjipple or corymbosely 

 brappjipii at the sumrnit : leaves l%-3 inches long, pinnately parted into 

 7-15 rijjjear or linear-ojjjbng acute entire dentjite or incised segments : flow- 

 ers blpe to nearly white, short pediceled, in dense scorpioid racemes: 

 calyx-loljes linear-lanceolate, acute, longer than the tube of the rotate- 

 campanulate corolla : appendages of the corolla long and narrow, free at 

 the apex, ajjd at bg,se free from the filaments: stamens about as long as 

 the corolla; anfh^f? short: style 2-cleft at the apex: capsule ovate, acut?. 

 about ^iJ^Jling tjje palyx, seeds numerous, oval, minutely alveolate in ver- 

 tical lines. Along the Snake river southwestern Idaho to Lake Superior. 



P. A^^nzif^ii Torr. Wiatson Bot. King 252. Hispid or roughish-hirsute, 

 and usually cinereous-ppbpscejot ajso : ste^n erect, 4-12 inches high from an 

 annual root, at length paniculately branched : leaves mostly sessile, linear- 

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

 lineaar or lanceolate entire; spikes or spike like racemes thyrsoid-pahiculate, 

 at lenth elongated and erect : calyx-lobes linear, hispid-ciliate, 4-5 lines 

 long : corolla blue varying to white, rotate campanulate, 6^10 lines in diam- 

 eter : its appeii'ijages cohniven't in pairs' opposite the lobes, forming 5 nec- 

 tariferous grooves: alternate stamehs shorter than the corolla: style 2-cleft 

 at the apex : capsule ovate, acuminate, about hdlf the lerigth of the calyx : 

 ovules l'S-16: seeds oblong, coarsely favose-reticulated. Common in dry 

 grounds, Oregon and Washington to California, Brit. Colutnbia and Mont. 



P. V£n;ia jHowell Erythfia iii, 35. Soft-pubescent and cinereous : stem 

 4-10 iiicljes hjgh from an annual rpot, paniculately branched : leaves 

 obovate ^o spatijlate, entire or rarely some of the lower ones incisely 

 toofheid, abruptly contr^icted below to a winged petiole, or the upper ones 

 sessile : cprolla pale blue, but little exceeding the calyx, open-campanu- 

 late, cjcifi to the middle, its appendages broad and free from the fila- 

 rfients^ caly,x-lobes linear-lanceolate, 2-3 lines long, hirsute: stamens ex- 

 serfe^, aijt'hers oval ; style deeply 3-cleft, hispidulous : capsule ovoid, 

 acuminate, more than half the length of ^he calyx ; seeds 8-12, oblong to 

 oboVate, favose-pitted. On rocky ridges in the Umpqua Valley, Oregon. 



§ 3 MiCROGENETES B. & H. Gen. ii, 838. Low annuals with 

 mostly pinnatifid leaves. Appendages in the corolla present or 

 rarely wanting. Style 2-cle.ft only at the apex. Stamens un- 

 equal, not exs.erted. Ovtiles several on each placenta. Seeds 

 oblong, strongly corruga/ted transversely. 



