Obdee 86.— SOROPHULARIAOE^. 521 



1 P. diss^otus EU. Minutely puberulent; Its. pinnately parted, segm. linear, 

 entire or few-lobed ; panicle loose, witU long, few-flowered peduncles ; cor. some^ 

 •what bell-shaped, sterile filament bearded at the apex. — In Middle Ga. St. near 

 2f high. Leaf-segm. distant, rather obtuse, margins revolute. Cor 9 to 10" long, 

 purple, resembling that of Gerardia, but curved. Jn., Jl. — Blackens in drying. 



2 P. grandifldrus Fraser. Erect, glabrous and glaucous; radical Its. petiolate, 

 ohovate-ohlong, cauline broadly ovate or orbicular, sessile or clasping, all entire; 

 panicle long, slender and raoemous, interrupted ; cor. broadly campanulate ; ster- 

 ile fil. dilated and puberulent at apex. — 111., near Prairie du Chien (Riddell) and 

 westward. St. 3f high. Pig. 1 to 3 together in the upper axUs. Cor. 15" long, 

 variously shaded with blue and purple. 



3 P. pub^soens Soland. More or less pubescent; radical Ivs. ovate or oblong, 

 petiolate, cauline lanceolate-oblong or lance-ovate, serrulate, sessile; panicle 

 loose ; cor. tube graduatty dilated, lower lip plaited and bearded inside, upper Up 

 shorter ; sterile stam. longitudinally bearded. — River banks, bluffs, hills and bar- 

 renfj, Can. to Pla. (rare in K Eng.). A handsome plant, 1 to 2f high. St. round, 

 .smooth belo^, supporting a loose, oppositely branched panicle of bluish-purple 

 fls. Cor. 1' in length ; the barren fil. broadest at end. Jn. 



/3. L.fiViGATns. Nearly or quite glabrous ; Ivs. clasping ; sterile fiL shorter. 



4 P. grdcilis Futt. Glabrous ; radical Ivs. petiolate, elliptic-oblong or lancer 

 oblong, cauUno linear lanceolate, amplexical, entire or remotely serrulate ; panicle 

 pubescent, slender; ped. erect; cal. segm. ovate-lanceolate, acuminate; cor. ttibe 

 long and narrow, scarcely dilated upwards, smooth inside ; sterile stam. longitudi- 

 nally bearded. — River bottoms, near i Chicago, 111. (Mead), also Mo. and Can. W. 

 Plant simple, glaucous, 2f high. Ped. 3 to l-flowered. Pis. nodding, 9 to 10" 

 long, pale blue. Jn. 



5 P. digitalis Nutt. Glabrous; radical Ivs. petiolate, oval-elliptic or oblong, 

 cauline lanceolate, amploxieaul, serrate, or rarely entire; panicle loose; ped. 

 erect, spreading; cor. tube abruptly campanulate-dilaied, beardless, upper lip 

 shorter than the lower ; sterile sta. longitudinally bearded. Rich soils, Ohio, Ind. 

 to Ga. and La. St. about 3f high. Lvs. 4 to G' long, often dilated at base. Pls. 

 numerous. Cor. 12 to 15" long, bluish-purple, varying to white. Jn., Jl. 



6 P. campamilatua Willd. Glabrous; lvs. acutely serrate, lance-linear or 

 lance-ovate, long- acuminate, often dilated at base; panicle long, loose and secund; 

 cor. tube ventricous above, lobes subequal; sterile fil. bearded. — A very variable spe- 

 cies, 2 to 3f high, with large flowers, varying from light purple to dark red or 

 purple, f Mexico. 



7 P. barbitus Nutt. Soaelbt Pent. Glabrous and glaucous ; lvs. entire, 

 lower oblong, upper lance-linear ; panicle long and loose ; cor. tube long, scarcely 

 dilated upwards ; lower lip and sterile fil. densely bearded. — Height 2 to if. Cor. 

 scarlet, 13" long, f Mexico. 



8 P. speciosus Doug. Erect, glabrous, glaucous; radical lvs. petiolate, 

 oblong-spatulate, cauline sessile, lanceolate; panicle elongated, slender, virgate, se- 

 cund ; cal. segm. ovate-oblong, acuminate, rriargin membranous ; cor. tube en- 

 larged upwards ; sterile fil. filiform, glabrous. — Height 3 to 4£ Pis. 1^ long, 

 blue. I Oregon. 



9 P. gentianoides, with the panicle long, leafy at base; fls. 15 to 18" long, 

 violet, scarlet, &c., and a few other species are rarely found in gardens. 



i2. COLLIN'SIA, Nutt. Innocence. .(In honor of Z. CoZZjW, Esq., 



of Philadelphia.) Calyx 5-cleft ; corolla bilabiate, orifice closed, upper 



lip bifid, lower>trifid, Tvith the middfe segment carinately saccate and 



closed over tlie declinate style and stamens ; capsule ovoid or globous, 



with 2 membranous, bifid valves ; seeds large, concavo-convex. — ® With 



verticillate or opposite lvs., axillary and terminal inflorescence. 



1 C. v^rna Nutt. (Pig. 362.) Minutely puberulent; lowest lvs. ovate or oblong, 



petiolate, middle and upper sessile, ovate-lanceolate, cordate-amplexicaul, dentate, 



floral ones lance-linear, entire ; vertioillasters 2 to 6-flowered ; cor. 2 or 3 times 



shorter than the pedicels, twice longer tluzn the caiyx. — ^Banks of streams, shaded or 



