MiMTJLUS. XCI. SCROPHULARIACE^. 401 



3. P. GRACILIS. Nutt. (Chelone gracilis. Sprcng.) Slender Beard-ion gvc. 

 Glabrous; radical Ivs. petiolate, elliptic-oblong or lance-oblong, caullne 



linear-lanceolate, amplexicaul, entire or remotely serrulate; /Jrtw/lcfc pubescent, 

 slender; ped. erect; cat. segments ovate-lanceolate, acuminate; cor. titbe long 

 and narrow, scarcely dilated upwards, upper lip shorter than the lower ; sterih 

 sta. longitudinally bearded. — River bottoms, near Chicago, 111., Mead, also Mo. 

 and C. W. Plant simple, glaucous, 2f high. Peduncles 3 — 7-flowered. Flow- 

 ers nodding, 9 — 10" long, pale blue. June. 



4. P. GRANDiFLORus. Frascr. (Chelone grandiilora. Spr.) Grcat-Jlowered 

 Bcard-tongiie. — Erect, glabrous and glaucous ; radical Ivs. petiolate, obo- 



vate-oblong, caullne broadly ovate, the highest orbicular, amplexicaul, not con- 

 nate ; panicle long, slender and racemose, interrupted ; ped. short, solitary or 

 fasciculate, rigid ; cor. broadly campanulate ; sterile fil. dilated and puberulcnl 

 at apex. — 111. near Prairie du Chien, Riddell, Mo., Nuttall. Stem 3f high. 

 Flowers 1 — 3 together in the upper axils. Corolla 15" long, much dilated at 

 the mouth, variously shaded with blue and purple. 



5. P. spEciosus. Doug. Shmoy Pcntstemon. — Erect, glabrous, glaucous ; radi- 

 cal Ivs. petiolate, oblong-spatulate, caullne sessile, lanceolate ; panicle elongated, 

 slender, vii^ate, secund; cal. segments ovate-oblong, acuminate, margin mem- 

 branaceous ; cw. tube enlarged upwards ; sterile fit. filiform, glabrous. — Oregon, 

 Height 3 — 4f. Flowers 1^' long, blue, f 



6. P. CAMPANULATus. Willd. (Chelonc campanulata, augustifolia, rosea, 

 atropurpurea, of autlwrs.') — Glabrous; lis. acutely serrate, lance-linear or lance- 

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

 cor. tube ventricose above, lobes subequal ; sterile fit. bearded. — Mexico. A very 

 variable .species, 2 — 3f high, with large flowers varying from light purple to 

 dark red or purple, t 



7. P. EARBATUS. Nutt. Scarlet Pentsfcmon. — Glabrous and glaucous ; Ivs. en- 

 tire, lower oblong, upper lance-linear; panicle long and loose; car. tube long, 

 scarcely dilated upwards ; Imuer lip and sterile fit. densely bearded. — Mexico. 

 Height 2— 3f Corolla scarlet, 13" long. ■\ 



Obs. — I^entianoicles, with the panicle long, leafy at base, flowers violet, scarlet, &c., and a few othef 

 species are rarely found in gardens. 



Tribe 5. GRATIOL,E.13. 



Corolla tubular, not saccate or spuiTed. Capsule bivalved, rarely indehiscent. 



Calyx lobes or segm. imbricate in asst. Inflor. centripetal, uniform. Beiith. 



10. MIMtJLUS. 



Gr. jiijxcd, an ape ; from the resemblance of the ringent or grinning corolla. 



Calyx prismatic, 5-tootlied ; corolla ringent, the upper lip reflected 

 at the sides ; palate of the lower lip prominent ; capsule 2-celled, 

 many-seeded; stigma thick, bifid. — Herbs prostrate or erect, with square 

 stems ojid opposite Ivs. Ped. axillary, solitary, \-Jlowered. 



1. M. RiNGENs. Monkey Flov-er. 



Lvs. sessile, smooth, lanceolate, aciTminate; ped. axillary, longer than tho 

 flowers. — Tj. A common inhabitant of ditches and mud soils. Can. and U. S., 

 with large, blue, ringent flowers. Stem erect, square, smooth, about 21 high. 

 Leaves se.ssile, opposite, .serrate, acute, lanceolate. Peduncles about as long as 

 the leaves, square, cmwed upwards, axillary and opposite. Calyx tubular, 5- 

 angled and 5-toothed. ' Corolla pale blue, yellow within. Jl. Aug. 



2. M. ALATUS. V/ing-stcm Monkey Flower. 



Lvs. petiolate, smooth, ovate, acuminate ; ped. axillary, shorter than the 

 flowers ; St. winged at the 4 corners. — 1|. In N. Y. to la., Plmnracr ! and S. 

 States. This, like the last .species, inhabits ditches and other wet places, and 

 grows to nearly the same height. The square stem, erect, smooth and winged 

 at the 4 angles, alTords an adequate distinction. Leaves stalked, ovate. Flow- 

 ers ringent, on short stalks, light purple. Calyx teeth rounded, mucronate. Aug. 

 3. M. LUTEU.S. (M. rivularis, lyratus, variegatus and guttatus of authors.) 



