304 
2 to 5 unequal stamens (with anthers exserted), and an oblon g-eylin- 
drical truneate fruit which is 5 or 15-ribbed or angled.—Much like 
Selinocarpus, but readily distinguished by perianth and fruit. 
1. A. crassifolia Gray. Scabrous-puberulent, decumbent: leaves thick, ovate, 
rounded at base: calyx-tube 4 to 5 em. long, the limb 12 mm.: fruit ovate, scarcely 
ribbed.—On the Rio Grande, from Los Moros to the Pecos. October. 
2. A. longiflora Gray. Glabrous, trailing, divaricately branched and with whit- 
ish fragrant flowers: leaves deltoid-ovate or rhombic-lanceolate: calyx-tube 13 to 
15 em, long: fruit cylindrical, 5-angled.—Sandy soil, from San Antonio to El] Paso 
and along both sides of the Rio Grande, June-October. 
3, A. Berlandieri Gray. Glabrous, diffuse: leaves oval or ovate: calyx white and 
fragrant, 2.5 to 5 em. long, the tube 2 to 3 times longer than the limb.—From the 
Nueces to the lower Rio Grande (from Laredo to Rio Grande City). June-October. 
4. A. anisophylla Gray. Nearly glabrous, prostrate: leaves oval or ovate, oblique 
at base and very unequally paired: calyx-tube 4 to 5 cm. long, many times longer 
than the limb: frnit 4mm. long, 10-ribbed.—In the alluvial soils of Turkey Creek 
and the San Pedro. 
5. A. Wrightii Benth. & Hook. Scabrous, divaricately branched: leaves very 
rough, oblong with an attenuate base: calyx-tube 4 cm. long: fruit 6 to8 mm. long, 
5-ribbed, the ribs glandular and usually thickened towards the summit. (Penta- 
crophys Wrightit Gray.)—Stony prairies, from San Antonio to El Paso, 
8. BOBRHAVIA L. 
Slender annual or perennial diffuse or procumbent herbs, with op- 
posite more or less unequal leaves, usually very small flowers, a 5-lobed 
funnelform or campanulate perianth, 1 to 5(?) stamens, peltate stigma, 
and a 5-ribbed clavate or obovate fruit (jointed upon the pedicel) 
truncate or rounded or acute at apex. 
* Fruit scarcely sulcate, obconic. 
1. B. decumbens Vahl. Glabrous, ascending: leaves ovate, rounded at apex, 
subciliate, usually whitish beneath: fascicles arranged in an elongated spreading 
panicle: peduncles loose, filiform: calyx-tube at length clavate, angular, rounded 
at apex, with delicate glandular ribs: fruit rounded at apex. (B. procumbens Rich., 
not Lam.)—Western Texas, New Mexico, and southward. 
* * Fruit 10-ribbed. 
+ Fruit gibbous, clavate: flowers spicate, 
2. B. gypsophiloides (Mart. & Gal.). Erect and branching: leaves lanceolate or 
ovate, narrowed to a succulent petiole, entire or repand-undulate, glabrous, 4 to 5 
em. long: flowers red, the spike long-pedunculate: fruit 6mm. long, curved, pendent 
on reflexed pedicels. (Tinantia gypsophiloides Mart. & Gal. B. gibbosa Pavon. 
Senkenbergia annulata Schauer.)—Borders of the Rio Grande, from El Paso to the 
mouth of the Pecos. April—October. 
+ + Fruit linear-clavate: flowers in umbels. 
8. B. scandens I. Perennial, glabrous: leaves cordate or ovate, acute or acumi- 
nate, 3 to5 em, long, on rather short petioles: pedicels 6 to 8-flowered, on simple 
axillary peduncles, or the inflorescence somewhat paniculate: pedicels slender, 4 to 
12 mm. long: flowers greenish, 4 to mm. long (including the base): stamens exserted : 
fruit glabrous, obscurely 10-ribbed, black-glandular toward the apex. (B. Grahami 
