496 PROCEEDINGS OF THE ACADEMY OF [PaRT III 



serrate, the upper lanceolate or oblong-lanceolate, obtuse or obtus- 

 ish, serrate; the bracts much reduced. Thyrsus about one third 

 the height of the plant, longer than wide, of 3-6 fascicles, each of 

 two axillary branches, which cymosely branch 2-3 times, rarely 

 more, the pedicels shorter than the primary peduncle. Sepals 

 in anthesis 2-6 mm. long, in fruit 3-7 mm. long, oblong-ovate to 

 ovate, acute to acuminate, slightly or not scarious margined, gland- 

 ular-pubescent. Corolla 20-28 mm. long; the tube and throat 15- 

 20 mm. long, the throat narrow, slightly inflated, strongly two- 

 ridged within on anterior side, the orifice nearly closed by the up- 

 curved base of the anterior lip; the two posterior lobes 3-5 mm. long, 

 united and arched less than or about one half length, their free 

 portions spreading; the three anterior lobes 5-8 mm. long, united 

 at base; the corolla externally finely glandular-pubescent, internally 

 slightly pubescent over the base of the anterior lobes; whitish or 

 purplish-white, on anterior side with fine violet lines. Anther-cells 

 divaricate, oblong, violet, 8. mm. long, microscopically puberulent, 

 opening throughout. Sterile filament slightly exserted, flat, not 

 wider distally, densely bearded with deep-yellow, becoming brown- 

 ish-yellow hairs. Capsule 8-10 mm. long, ovate-acuminate in out- 

 line, glabrous, brown. Seeds .8-.1 mm long, sharply and slightly 

 wing-angled; testa brown lustrous, reticulate. 



Plants of coastal plain, especially in pineland and coast prairie, 

 smaller-leaved and with stem nearly bare, while upland plants are 

 rather leafy. Also upland plants, especially in eastern Oklahoma, 

 are relatively more pubescent. 



Sandy soil, usually open woodland or prairie, through the Coastal 

 Plain south of the Arkansas River in Arkansas and west to the 

 Guadalupe River in Texas, in long-leaf pineland, short-leaf pine- 

 land, coastal prairie and post-oak woods; inland in sandy or rocky 

 woods or prairies to the Burnet metamorphic country of central 

 Texas, and northwestward (west of the higher Ouachita Hills) 

 to central Oklahoma. Flowering from early April to early June, 

 depending upon latitude. 



Arkansas. Jefferson: Jefferson Springs, Pennell 10658 (A, C, 

 H, M, U, Y). 



Oklahoma. Atoka: Limestone Gap, Butler 106 (M). Caddo: 

 Hinton, Stevens 943 (M, U). Creek: Sapulpa, Bush 881 (M, Y). 

 Lincoln: Fonts, Neaves (U). Logan: Guthrie, Carleton 147 (U). 

 McCurtain : Idabel, Houghton 3629 (M, Y) . Muskogee : Muskogee, 

 Oyster (U). Oklahoma: Bethany, Pennell 10576 (H, K, O, P, Y). 

 Payne: Stillwater, Waugh 253 (U). Pittsburg: McAlester, Pennell 

 10586 (A, C, M, Y). 



