exserted 5-8 mm.; capsules about 4 mm. in diameter; seeds 1 or 2, brown, about 

 3 mm. in diameter. 



Along streams in shade, in wet thickets and in seepage areas, in Ariz. (Coconino 

 and Gila cos.), Apr .-Aug.; Ore. and Calif., e. to Ut. and Ariz. 



4. Nama L. 



Low, pubescent annual or occasionally perennial herbs with mostly alternate, 

 essentially entire leaves and conspicuous or inconspicuous white to purplish-violet 

 flowers in non-scorpioid terminal cymes or solitary; calyx usually divided nearly 

 to base, unappendaged, little-accrescent; corolla tubular to broadly funnelform 

 or campanulate, usually exceeding calyx; stamens included, usually unequal and 

 unequally inserted, filament base usually appendaged or dilated; style shallowly 

 bifid to bipartite; capsule ovoid to globose, often partially divided by intrusion of 

 placentae, many seeded; seeds minute, usually reticulate and sometimes shallowly 

 pitted. 



A genus of 40 to 50 species principally of the southwestern United States and 

 northern Mexico, a few in South America, and one in Hawaii. 



1. Calyx divided one half to three fourths distance to base, the tubular portion 

 adnate to the ovary which is thus inferior 1. N. stenocarpum. 



1. Calyx divided to base or nearly so, not grown to the superior ovary (2) 



2(1). Leaves broad, plane; petiole conspicuously decurrent on the winged stem; 

 hardened calyx lobes adherent to capsule 2. TV. jamaicense. 



2. Leaves narrow, revolute and spoon-shaped; petiole not decurrent; calyx neither 



hardened nor adherent to capsule 3. N. torynophyllum. 



1. Nama stenocarpum Gray. Fig. 646. 



Prostrate to ascending or erect sparsely hirsute annual, branching from base, 

 the leafy branches 1-3 dm. long; leaves alternate, oblong to spatulate, 1-4 cm. 

 long, 2-10 mm. wide, often undulate, sometimes clasping; flowers lavender, 

 solitary or paired at nodes; calyx lobes linear-spatulate, 4-7 mm. long, calyx tube 

 adnate to the inferior ovary; corolla tubular-campanulate, 5-7 mm. long, little 

 longer than calyx; stamen bases dilated into free-margined scales about equaling 

 the free filament; seeds yellowish, finely alveolate. 



Mud of poorly drained clay soil, often alkaline, and along resacas, in s. and 

 s.e. Tex., Mar.-May; w. to Ariz, and Calif., s. to adj. Mex. 



2. Nama jamaicense L. 



Prostrate or ascending, strigose-hirsute, leafy annual, branching from base, 

 the branches 1-5 dm. long; leaves alternate, spatulate to obovate, 15-80 mm. long, 

 5-35 mm. wide, plane, conspicuously decurrent at base to form a winged stem; 

 flowers white, usually solitary in upper leaf axils; calyx lobes linear or linear- 

 spatulate, enlarging and adherent to ovary in fruit; corolla nearly tubular, 6-7 

 mm. long; stamen bases dilated into free-margined scales shorter than the free 

 filament; seeds brown, finely alveolate. 



Moist places under shrubs, in wet clay along streams and about ponds, and 

 on brushy hills in s. and s.e. Tex., Apr.-July; e. to Fla. and s. to W.L and C. A. 



3. Nama torynophyllum Greenm. Fig. 646. 



Prostrate, matted, leafy, densely villous annual, with very short branches; 

 leaves alternate, spatulate, revolute and spoon-shaped, 1 cm. long, L5-4 mm. 

 wide; flowers white or pinkish, numerous, arranged singly along the branches; 

 calyx lobes linear-spatulate, 3-3.5 mm. long; corolla tubular, 3-4 mm. long; 

 stamen bases not dilated, the adnate portion much shorter than the free filament; 

 seeds brown, shallowly pitted. 



1380 



