Part 3, 1918] ALLIONIACEAE 207 
4. Boerhaavia gracillima Heimerl, Bot. Jahrb. 11: 86. 1889. 
Boerhaavia erecta Benth. Pl. Hartw.9. 1839. Not B. erecta l. 1753. 
Boerhaavia paniculata Benth. Pl, Hartw. 343. 1848. Not B. paniculata Rich. 1792. 
Boerhaavia anisophylla paniculata Coult. Contr. U. S. Nat. Herb. 2: 356. 1894, 
Boerhaavia organensis Standley, Contr. U. S. Nat. Herb. 12: 385. 1909. 
Boerhaavia gracillima glabrata Heimerl; Standley, Contr. U. S. Nat. Herb. 12: 386. 1909. 
Perennial, from a thick woody root; stems humerous, decumbent or procumbent, 3-10 
dm. long, much branched, the branches slender, minutely and obscurely puberulent, or very 
rarely pilose, glaucous or pale-brown; petioles stout, 0.3-2.5 cm. long; leaf-blades broadly 
rhombic, suborbicular, broadly oval, elliptic-oblong, or broadly ovate! 2-4 em. long, 1-3.5 
em. wide, subcordate or rounded at the base, broadly rounded to acute or rarely abruptly 
acuminate at the apex, thick and firm, often coriaceous, bright-green or often glaucous, espe- 
cially beneath, epunctate, entire or slightly sinuate, prominently veined, glabrous, or when 
young obscurely puberulent; inflorescence of numerous axillary and terminal cymes or of 
axillary 1- or 2-flowered peduncles, the cymes much branched, the branches very slender or 
filiform, divergent, glabrous, the flowers usually on filiform pedicels 5-10 mm. long, the bracts 
minute, lanceolate, glabrous, deciduous; perianth deep purplish-red, 5 mm. broad, puberulent 
outside or very rarely glabrate; stamens 2 or 3; fruit narrowly oblong-obovoid, 3.5-4 mm. 
long, rounded at the apex, short-pilose or pubertlent or very rarely glabrate, 5-angulate, the 
angles narrowly rounded, smooth, the sulci smooth. 
Type Locality: In fields, Aguascalientes, Aguascalientes. 
Distrisution: Dry plains and rocky hillsides, western Texas and southern New Mexico to 
Lower California and Oaxaca. ‘ 
ILLUSTRATION: Bot. Jahrb. 11: pl. 2, f. la—ig. 
5. Boerhaavia ciliata Brand. Univ. Calif. Publ. Bot. 4: 270. 1912. 
Perennial, from a thick woody root, the stems numerous, procumbent, 2-5 dm. long, 
sparingly branched, the branches slender, finely puberulent and glandular-pilose; petioles 
slender, 2-8 mm. long; leaf-blades suborbicular to broadly oval, rarely oval-ovate, 0.6-2 cm. 
long, 0.6-1.2 cm. wide, often broader than long, subcordate to broadly rounded at the base, 
broadly rounded to acute at the apex, apiculate, firm, bright-green above, glaucescent or pale 
yellowish-green beneath, epunctate, entire, sparsely glandular-pilose, glabrate in age; flowers 
subsessile or on slender pedicels 1-5 mm. long, solitary or 2-3-glomerate at the ends of filiform, 
glabrous or pilose, axillary or terminal peduncles 0.5—4.5 cm. long, the bracts minute, linear to 
lanceolate, attenuate, persistent, purplish, ciliate; perianth purplish-red, about 5 mm. broad, 
sparsely puberulent or pilose outside; stamens 4; fruit obovoid-oblong, 2.5 mm. long, rounded 
at the apex, glabrous, 5-angulate, the angles rounded, smooth, the sulci smooth. 
TypE Locality: Near Minas de San Rafael, San Luis Potosi. 
Disrrisution: Known only from the type locality. 
6. Boerhaavia anisophylla Torr. Bot. Mex. Bound. Surv. 171. 1859. 
Boerhaavia Palmeri S. Wats. Proc. Am. Acad. 18: 142. 1883. 
Perennial, from a thick woody root; stems few or numerous, ascending or procumbent, 
1.5-5 dm. long, sparsely branched, the branches slender, grayish, densely puberulent below 
and hirtellous or rarely glandular-hirtellous, puberulent or glandular-puberulent above; 
petioles stout, 2-10 mm. long; leaf-blades oval, broadly deltoid, oval-ovate, broadly ovate, or 
oblong, 1-3 cm. long, 0.5—-2 cm. wide, cordate or rounded at the base, broadly rounded to 
obtuse or rarely acute at the apex, entire or sinuate, coriaceous, green above, glaucous beneath, 
scaberulous or short-hirtellous, glabrate in age, minutely brown-punctate beneath; inflorescence 
cymose, much branched or sparingly branched, the branches slender, glandular-puberulent, 
the flowers subsessile or short-pedicellate, in few-flowered glomerules, the bracts lanceolate 
or ovate, acuminate or attenuate, thin, persistent, purplish-red, ciliate; perianth bright purp- 
lish-red, 8-13 mm. broad, puberulent outside; stamens 5; fruit obovoid-oblong, rounded at 
the apex, glabrous, 5-angulate, the angles broad, rounded, smooth, the narrow sulci smooth. 
Tyre Locairy: Entrance of the Great Canyon of the Rio Grande, Texas. 
DISTRIBUTION: Dry rocky hillsides, extreme western Texas to Chihuahua and Nuevo Leén. 
