Part 3, 1918] ALLIONIACEAE 211 
long; bracts minute, linear or lanceolate, reddish, persistent; perianth white or tinged with 
pink, 1-1.5 mm. long, glabrous, sometimes glandular-punctate; stamens 2 or 3, exserted; fruit 
narrowly obpyramidal, 3-3.5 mm. long, 1-1.5 mm. broad at the truncate apex, green, glabrous, 
5-angled, the angles obtuse or acutish, smooth, the sulci coarsely transverse-rugose. 
TYPE LocALIty: Mexico. 
Distrimvution: South Carolina to Florida, Arkansas, and southern Arizona, and southward 
ah Mexico, Central America, and the warmer parts of South America; general in the West 
ndies. 
ILLustrations: Jacq. Hort. Vindob. pi. 5, 6; Gaertn. Fruct. pl. 127. 
17. Boerhaavia intermedia M. E. Jones, Contr. West. Bot. 10: 41. 
1902. 
Boerhaavia universitatis Standley, Contr. U. S. Nat. Herb. 12: 380. 1909. 
Erect or procumbent annual, 2-5 dm. high, much branched, the branches slender, ascend- 
ing, minutely puberulent, often brown-punctate or tinged with red, the middle and upper 
internodes usually with viscous rings; petioles slender, 0.3-2.5 cm. long; blades of the lower 
leaves mostly oval or broadly oblong, rarely oval-ovate or suborbicular, the others oblong to 
ovate, lanceolate, or linear, 1.5—4.5 cm. long, 0.3-1.5 cm. wide, rounded or obtuse at the base, 
broadly rounded to long-attenuate at the apex, rather thin, glabrous or when young obscurely 
puberulent, entire or subsinuate, green above, paler or often white beneath, frequently brown- 
punctate, especially on the upper leaves; inflorescence cymose-paniculate, much branched, 
the branches slender, ascending, the internodes usually with viscous rings, the flowers on 
slender pedicels 1-3 mm. long, in few-flowered, usually simple umbels at the ends of long slender 
peduncles; bracts minute, lanceolate, glandular-punctate, persistent; perianth 1.5-2 mm. 
long, pink, often glandular-punctate; stamens 2 or 3, equaling or slightly exceeding the perianth; 
fruit narrowly obpyramidal, 2.5-2.7 mm. long, yellowish-green or stramineous, glabrous, 
truncate at the apex, 5-angulate, the angles smooth, obtuse, the narrow sulci transverse- 
rugulose. 
Type Locality: El Paso, Texas. 
DistTrreution: Dry plains and fields, western Texas to southeastern California, south to 
Lower California, Durango, and Coahuila. 
ILLUSTRATION: M. E. Jones, Contr. West. Bot. 10: 1. 16. 
18. Boerhaavia lateriflora Standley, Contr. U. S. Nat. Herb. 
13: 426. 1911. 
Erect or procumbent annual, 1-5 dm. high, much branched, the branches slender, green- 
ish, minutely puberulent, slightly or not at all viscous; petioles very slender, 0.3-3 cm. long: 
leaf-blades broadly ovate-rhombic to ovate, oval, oblong, or lance-oblong, or the uppermost 
linear, 1.5—5.5 cm. long, 1-2.5 cm. wide, or those of the inflorescence only 2 mm. wide, rounded 
at the base, rounded to attenuate at the apex, entire or subsinuate, thin, green above, 
slightly paler beneath, glabrous or obscurely puberulent; inflorescence cymose-paniculate or 
wholly of axillary and terminal simple peduncles, the flowers sessile or short-pedicellate, in 
dense headlike cymes; bracts minute, lanceolate, thin, persistent, sometimes glandular-punc- 
tate; perianth pink, 2~3 mm. long, glabrous; stamens 3, exserted; fruit 2.5 mm. long, narrowly 
obpyramidal, truncate at the apex, glabrous, 5-angulate, the angles obtuse, slightly rugulose, 
the sulci broad, strongly rugulose. 
Type Locatiry: Guaymas, Sonora. : 
DISTRIBUTION: Vicinity of the type locality. 
19. Boerhaavia Wrightii A. Gray, Am. Jour. Sci. IT. 15: 322. 1853. 
Boerhaavia bracteosa S, Wats. Proc. Am. Acad. 20: 370. 1885. 
Erect annual, 2-6 dm. high, much branched, the branches slender or stout, ascending, 
densely puberulent below and often short-villous, densely glandular-puberulent and villous 
above; petioles slender or stout, 0.5—2 cm. long; leaf-blades ovate, ovate-oblong, oval, narrowly 
oblong, or lanceolate, or the uppermost linear, 2-4.5 cm. long, 0.3-2.5 cm. wide, truncate or 
rounded at the base, obtuse or rounded to long-attenuate at the apex, sinuate or entire, rather 
