826 FLORA, 



and capitate at the summit; capsule acute, 1.5-2 cm. high, three times as long a: 

 the calyx. On prairies, 111. to Minn.. S. Dak. and Kens. June-Aug. 



12. Pentstemon acuminatus DougL Shahp-leaved Beard-tongue. (I 

 F. I. 3257.) Glaucous, strict, 1.5-6 dm. higb, leafy. Leaves firm, entire, th< 

 lower and basal ones oblong or spatulate, narrowed into petioles, the upper sessfl 

 or clasping, lanceolate or ovate-lanceolate, 5 8 cm. long; thyrsus narrow, some 

 times 1-sided; calyx-segments lanceolate, acute, 4-6 cm. loifc.-j; corolla blue, its tuhx 

 rather gradually dilated, the limb 2-lipped; sterile filament bearded along th< 

 dilated summit; capsule acute, twice as long as the calyx. In dry soil, N.W. Terr 

 to Neb.. Tex.. Ore. and N. Mex. May Aug. 



13. Pentstemon glaber Pursh. Large SMOOTH Beard-tongue. (I. F. f 

 3258.) Somewhat glaucous, leafy, 3-6 dm. high. Leaves entire, firm, the basa 

 and h wer ones narrowed into petioles, the upper oblong or oblong-lanceolate, 

 acuminate; thyrsus narrow, elongated; pedicels 6-14 mm. long in fruit; calyx- 

 its ovate lanceolate, scarious margined, abruptly acuminate, 6-8 mm. long 



corolla blue or purple, rather abruptly expanded above the calyx, the limb some- 

 what 2-lipped, the lobes rounded; sterile filament bearded at the slightly enlarged 

 summit; capsule narrowly ovoid, acute, about twice as long as the calyx. Ir 

 moist soil, S. Dak. to Neb., Ariz., Ore. and Cal. May-Aug. 



14. Pentstemon ang-ustifjlius Pursh. Pale-blue Beard-tongue. (I. F. f. 

 3259.) Glaucous; stem slender, leafy, 1.5-4 dm. high. Leaves linear, or linear- 

 lanceolate, entire, the lower narrowed into petioles, obtusish, the upper sessile, 

 acute, 3-6.5 cm. long, 3-4 mm. wide; thyrsus narrow, spike-like, mostly dense 

 bracts lanceolate, acuminate; pedicels very short; calyx-segments linear-lanceolate, 

 acuminate, 4-6 mm. long; corolla blue or nearly white, the tube gradually <^ 

 larged, the limb somewhat 2-lipped; sterile filament bearded at the summit, ir. 

 dry soil, Neb. to N. Uak. and Mont. May-July. 



15. Pentstemon Haydeni S. Wats. Hayden's Beard-tongue. (I. F. f. 

 3260.) Not glaucous or slightly so; stem decumbent, leafy, 3-6 dm. high. Leaver 

 linear or elongated-lanceolate, entire, sessile and slightly clasping, acute, acumi- 

 nate, or the lowest obtusish, 5-13 cm. long, 2-10 mm. wide; thyrsus narrow, dense 

 bracts ovate or ovate-lanceolate, large, cordate-clasping, acute, or acuminate; calyx- 

 segments lanceolate, striate-nerved, acuminate, 6-10 mm. long; corolla blue, the 

 tube broadly dilated above the calyx, the limb nearly equally 5-lobed; capsule acute, 

 twice as long as the calyx. In moist soil, Neb., Kans. and Wyo. 



9. COLLINSIA Nutt. 



Winter-annual herbs, with opposite or verticillate leaves, and blue, pink, white 

 or variegated flowers, verticillate, or solitary in the axils. Calyx campannlate, 

 5-cleft. Corolla irregular, the tube short, the limb 2-lipped; upper lip 2-cleft, tin 

 lobes erect or recurved; lower lip larger, 3-lobed, the lateral lobes spreading 01 

 drooping, flat, the middle one conduplicate, keel-like, enclosing the 4 decline^ 

 stamens and the filiform style. Stamens didynamous. Corolla with a gland 01 

 the upper side of the tube near the base. Filaments filiform; anther-sacs confiu- 

 ent at the apex. Stigma small, capitate or 2-lobed. Capsule ovoid or globose 

 septicidally 2-valved. the valves 2-cleft. Seeds few, large, peltate concave on tin 

 inner side. [Named for Zaccheus Collins, botanist, of Philadelphia, 1764-183 1.] 

 About 15 species, of N. Am. 



Corolla 10-16 mm. Ions:, the throat shorter than the limb. 



Leaves, at least the lower, ovate or oblong; corolla-lobes notched. 1. C. verna* 



Leaves lanceolate; corolla-lobes obcordate. 2. C. violacea. 



Corolla 4-6 mm. long, the throat longer than the limb. 3. C. parviflora. 



i. Collinsia verna Nutt. BLUE-EYED Mary. (I. F. f. 3261.) Glabrous 01 

 puberulent; stem weak. 1.5-6 dm. long. Leaves thin, opposite, the lower broad 1> 

 OVate or orbicular, obtuse, crenale or entire, slender-petioled ; middle leav< 5 

 or cordate-Clasping, ovate or oblong, obtuse, dentate. 2-5 cm. long, floral leave; 

 ovate to spatulate, mostly acme; upper whorls 4-6-flowered; corolla 12 i" mm 

 long, its lower lip blue, the upper purple or nearly white; capsule idol ose, 5 6 mm. 

 in diameter. In moist m»ds and thickets, western N. Y. and Ont. to Wis., Penn., 

 Ky. and the Ind. Terr. April-June. 



