702 HYDROPHYLLACEAE 



cm. long; appendages of the calyx small, oblong; lobes ovate, short-ciliate; corolla 

 barely exceedmg the calyx; lobes oval; seeds obscurely pitted. Perhaps the 

 same as N. Auslinae Eastw. Canons: Ida. Son. Jl. 



6. PHACELIA Juss. Scorpion Weed. 



Perennial or annual caulescent herbs. Leaves alternate or opposite belo\^^ 

 llqwers perfect, m scorpioid racemes or cymes. Calyx slightly enlarging in 

 trmt, o-lobed, without appendages. Corolla white, purple, or blue: tube ap- 

 pendaged within; lobes 5, imbricate. Stamens 5; filaments adnata to the tube 

 ot the corolla. Ovary 1-celled, with two narrow placentae attached to the walls 

 ot the ovary; styles 2-cleft; ovules two to many on each placenta. Capsule 

 1-celled or falsely 2-celled, 2-valved. Seeds reticulate or roughened. 



Stamens equalUng or usually much exceeding the corolla 



l^eaves all simple and entire, or some of the lower pionately 3-5-divided, mth entire 

 divisions; capsule acute; ovules 4. I Heterophtllae 



Leaves from sinuate-crenat e to twice pinnatifld. nn-ii.uui'Hri.i^. 



Plant annual or in one species perhaps perennial, but not cespitose. 



capsule globular-ovoid, obtuse; ovules 4; stamens in most species long-exserted. 

 calyx-lobes oblong-spat ulate to linear-oblanceolate. scarcely exceeding the 



n i^^^i u^'t ,. II- GLANDULOSAE. 



calyx-lobes linear to hnear-oblanceolate, much exceeding the capsule. 



^^^^„,^ . , ^ , III. Ramosissimae. 



Capsules ovoid, acute; ovules 12-40; stamens slightly if at all exceeding the 

 corolla. IV Lineares 



cif«T«or.^^«wLP^^?^"^Hv*^^^**??^' inflorescence spicate-thyrsiform. V. Sericeae.' 

 Stamen^ shorter than the corolla; plant low and diffuse; aimuals. 



7.1 reticulate or favose-pitted, not transversely rugose; leaves long-petioled. entire 

 ur Ctenaieiy loDeci. ^j Puix^helL-VE 



Seeds strongly corrugated transversely; leaves pinnately divided. ' 



^ „ VII. BiCOLOEES. 



I. Heterophyllae. 



Plant perennial, or at least biennial. 

 Plant densely canescent. 



Calyx-lob^ linear or linear-oblong; midvems inconspicuous; corolla pink or pale 

 lilac, about 6 mm. long. ^ IP leucophuUa 



Calyx-lobes narrowly linear; midveins, at least in fruit, very strong; corolla white, 

 4-5 mm. long. 2 P BurkH 



Plant not densely canescent. mvKei, 



Pubescence of the leaves of two kinds. long liirsute hairs and a fine pilose or tomen- 



tose pubescence. 



Calyx almost as long as the white corolla, its lobes narrowly linear, acute. 



with a strong midrib. 3. p, nervosa. 



Calyx much shorter than the corolla; mid veins faint. 



btem erect; calyx from two-thh-ds to three-foui*ths as long as the corolla. 

 Plant bienmal or short-lived perennial; coroUa pink or Ulac. 



Plant a cespitose perennial; corolla usuahy white. 

 Q. ,. , 5. P. heterophylla. 



Ktem ascending, slender; inflorescence open; calyx about half as long as 

 ■D l^ the pilose purplish coroHa. 6. P. alpina. 



I'uDescence of the leaves hirsute only; calyx-lobes narrowly linear; midrib weak; 

 ^^ corolla white. 7 p ipnfn^ipnnla 



Plant annual. ^' ^' leptosepaia, 



CoroUa 8-10 mm. long; ovules 12-16. 24. P. linearis, 



II. GLANDULOSAE. 



CorpUa-lobes entire or merely sinuate-crenate 



^^^;(,fJ'^^^^^-<^^G^^t,G to lobed halfways to the midrib. 



CoroUa narrowly campanulate; plant simple, strict, densely hirsute. 



^^''^I™°Pf^"*^^"^P»?^^.^*^= P^^^* branched, scarcely at all lui-sute. very glandular. 

 Stem-leaves suborbicular, subcordate at the base. 10. P. orbicularis, 



btem-leaves not suborbicular. 



Stem-leaves ovate, oval, or elUptic in outUne. 11. P. integrifoHa, 



To.,.^. ■ ^^^J^-^eay^ oblong m outline. 12. P. corrugata. 



Leaves pinnately divided to the midrib x^. ^. ^^ y 



Leaves densely hirsute or pilose, only sUghtly glandular; plant low, 1-2.5 dm. 



high, often naked above. => ^ » 



Leaves oblanceolate or spatulate m outline; calyx decidedly hirsute-liispid : 

 stem ajid petioles glandular. 13. p. crenulata. 



L,eaves oblong or linear in outline; calyx scarcely hispid, but densely glandular; 

 stem and petioles white-vmous. 14. P. deserta, 



i^eaves mrsute only on the veins, short-pubescent and very \iscid; plant stouter, 



^—4 am. niyrn. nrannhAH "^ 



