Contributions to Western Botany. Be 
A. corymbosa (Cav.) Kuntze Var. Texensis Coult. Fl. 
Tex. 351. Leaves cordate-acuminate, margins sinuous; flowers 
terminal and crowded; involucre 2-3 flowered. On the Rio 
Grande, near El Paso, Texas. 
7. A.aggregata (Vahl.) Spreng Ic. 5 437. Branches erect; 
leaves lanceolate, short-petioled, margins ciliate; peduncles soli- 
tary, axillary, villous, somewhat nodding. Prairies of western 
24B2C2D, Plants pubescent, 
A. oxybaphoides (Gray) Kuntze Sill. Jour. 2 15 320. 
Stems slender, widely procumbent; leaves all deeply cordate, on 
rather long petioles, lowest leaves reniform, upper ones acumi- 
nate and sometimes angled; involucre 3-flowered, very glandular 
as well as the loosely panicled peduncles; fruit: round-ovoid, with- 
out ribs. Mountains near El Paso, Texas, and southward. 
2A2B. Fruit pubescent; inrolucre 3-5 flowered. 
9. A.albida Walt. FJ. Car. 84. Stems erect, striate, 4- 
angled below, 1-3° high, glabrous to pubescent above; peduncles 
and branches variably glandular; leaves lanceolate to oblong- 
lanceolate, 3-nerved from base, the upper sessile and variably 
pubescent, lower short-petioled; involucres much enlarged in 
fruit, purple-veined; flowers pink; stamens often exserted; fruit 
5-6-ribbed, obtuse, roughened in thegrooves. Colorado to Texas 
and eastward. 
10, A, nyctaginea (Mx. Fl. 1 100) Kuntze. Leavesnearly 
smooth, all petioled except the uppermost reduced ones, obtuse 
or heart-shaped at base; stems repeatedly forked. This occurs 
in the Lower Oak and Upper Juniper Zones from Wisconsin to 
the upper Missouri and southward to New Mexico and Texas 
and westward as far as the Rocky mountains of Colorado, but 
does not occur on the western side of the Rocky mountains, nor 
do its varieties. 
Var. Cervantesii (Lag.)Choisy DC. Prod. 13. Branchesand 
