FHACELiA. PENTANDRIA. MONOGYNIA. 221 



branched. Leaves alternate, on long petioles, pinnatifid, with 

 the two lower leaflets remote. Flowers in terminal subsecund 

 racemes. Segments of the calyx shorter than the corolla, 

 linear-lanceolate. Corolla blue ; segments round. Stame7i& 

 nearly as long again as the corolla ; Jilaments bearded in the 

 middle. Style filiform, persistent ; stigma very long. Cafi- 

 svle subrotund. 

 Ha3. In the western countries ; principally on the Allegany 

 Mountains. Pennsylvania to Virginia. May — June. P m rs/'i. 



2. V, fimhriata M ic.h.: stem ascending, hairy; leaves 

 with undivided lobes ; segments of the corolla fimbriate, 

 Mich. Fl. I. p. 134. excL syn. P luk, Pursh FL\.^ 

 140. Elliott Sk.].ip.23Q. M uhl. Cat. ^. 19. Rotm. 

 4r Schult, IV. p. 190. 



Boot perennial, (annual, Purs h.) Plant hairy. Stern about a 

 foot high, procumbent at the base. Leaves alternate ; upper 

 ones pinnatifid, sessile ; lower ones pinnate. Racemes short, at 

 first revolute. Segments of the cc/i/x hispid. Corolla "beau- 

 tiful blue,*' (PxtrsA,) "white," Mich. 



Hab. In alluvial soils, throughout the western parts of Penn- 

 sylvania and Ohio. JVu t tall. 



3. P. parviflora Ph. : stem diffuse, pubescent ; leaves 

 sabsessile, pinnatifid ; segments oblong, rather obtuse, entire ; 

 racemes solitary; pedicels short; segments of the corolla 

 round, very entire. P ur s h FL I. p. 1 40. M u h L Cat. p. 

 19. Roem. ^ Schult, IV. p. 190. Polemonium du- 

 bium W i 1 1 d. Spec. I, p. 887. P» fohis inferioribus hastatis 

 superioribus lanceolatis. G r on. Virg. ^. 2d. Pluk.Alm,. 

 t. 245. L 5, 



Root annual. Stem 6 — 8 inches high, slender, a little branched, 

 Leaves alternate, about an inch long ; upper surface covered 

 with appressed hairs; radical ones petiolate, lobed. Flowers 

 in terminal racemes, one-fourth as large as in P. bifiinnatifida. 

 Pedicels about half an inch long. Segments of the calyx ob- 

 long, rather obtuse. Corolla pale blue, (white, Mu h I.) as 

 long again as the calyx, naked internally ? Stamens scarcely 

 exserted; Jilaments smooth. Capsule subrotund, hairy, 

 2-celled, 2-valved, 6 — 6-seeded ? Seeds angular, scabrous. 



Hab. In Pennsylvania. May. Muhlenberg. Scarcely of 

 this genus, and probably, as JVu 1 1 a II thinks, an Ellisia : 

 it, however, differs in the number of seeds. My specimens are 

 from the Southern States. Phacelia scarcely differs in any 

 important character from Hydrophyllum, to which, I think, 

 it should be united. 



151. SPIGELIA. L, 



Calyx 5-parted. Corolla infundibuliform ; border 



