Part 3, 1918] ALLIONIACEAE 213 
racemes; bracts usually shorter than the ovary, lanceolate or ovate, thin, brown-punctate, 
obscurely ciliolate; perianth 1-1.5 mm. long, pink or white, glabrous; stamens 1 or 2, included; 
fruit narrowly obovoid, 2.5~3 mm. long, rounded at the apex, acute at the base, glabrous, 
5-angtulate, the angles broad, obtuse, smooth, the sulci narrowly linear, closed, smooth. 
TYPE LOCALITY: Mexico. 
DistRiIsution: In dry, sandy soil, Arizona and southeastern California to Lower California 
and Sonora. 
23. Boerhaavia Xanti S. Wats. Proc. Am. Acad. 24: 69. 1889. 
Boerhaavia fallax Standley, Contr. U. S. Nat. Herb. 13: 424. 1911. 
Erect or decumbent annual, 2-4 dm. high, much branched, the branches slender, stramine- 
ous or light-green, puberulent and villous or hirtellous below; petioles slender, 0.5-2.5 cm. 
long; leaf-blades ovate-rhombic, oval, oblong, oblong-ovate, narrowly oblong, or lanceolate, 
2-5 cm. long, 0.5-3 cm. wide, subcordate to obtuse at the base, rounded to attenuate at the 
apex, entire or usually sinuate, thin, green above, paler beneath, often brown-punctate, glabrous 
or puberulent; inflorescence cymose-paniculate, much branched, the branches slender, giabrous, 
often with viscous internodes, the flowers on pedicels ] mm. long, in short, dense or inter- 
rupted racemes; bracts small, lanceolate or ovate, deciduous, thin, often ciliolate, shorter 
than the flowers; perianth pink, 3 mm. long, glabrous; stamens 3 or 4, exserted; fruit broadly 
obovoid, 2.5 mm. long, rounded at the apex, acute at the base, glabrous, 5-angulate, the angles 
broad, acute, smooth, the sulci broad, transverse-rugulose. 
TypPr Locality: Cape San Lucas, Lower California. 
DistRiBUuTION: Southern Lower California and western Sonora. 
24. Boerhaavia Torreyana (S. Wats.) Standley, Contr. U.S. Nat. 
Herb. 12: 385. 1909. 
Boerhaavia spicata Torr. Bot. Mex. Bound. Surv. 171. 1859. Not B. spicata Choisy, 1849. 
Boerhaavia spicata Torreyana S. Wats. Proc. Am. Acad. 24: 70. 1889. 
Erect or procumbent annual, 2-6 dm. high, much branched, the branches slender or 
stout, puberulent below and sometimes sparsely glandular-hirtellous, above puberulent and 
hirtellous, sometimes viscid; petioles slender, 0.5-2.5 cm. long; leaf-blades deltoid-ovate, oval, 
oblong, rhombic-ovate, or ovate, or the uppermost narrowly Janceolate, 1.7-4.5 cm. long, 
0.4-2.5 cm. wide, truncate to obtuse at the base, rounded to very acute at the apex, entire 
or usually sinuate, green above, paler beneath, usually brown-punctate, puberulent or glabrate; 
inflorescence cymose-paniculate, much branched, the branches slender, glabrous but mostly 
with viscous internodes, the flowers on slender pedicels 1-2 mm. long, in slender, remotely 
flowered racemes; bracts small, deciduous, usually lanceolate, thin, brown-punctate, ciliolate, 
commonly shorter than the ovary at anthesis; perianth pink, ylabrous or puberulent, 1-1.5 
mmm. long; stamens 1 or 2, included; fruit narrowly obovoid, 2.5 mm. long, rounded at the 
apex, acuminate at the base, glabrous, stramineous, 5-angulate, the angles thin, acute, often 
rugulose, the sulci broad and open, rugulose. 
Tyre yocatiry: Not definitely stated. : : 
Distrisution: Dry, gravelly plains and hillsides, western Texas to Arizona, south to Coahuila. 
25. Boerhaavia spicata Choisy, in DC. Prodr. 13: 456. 1849. 
Boerhaavia Palmeri S. Wats. Proc. Am. Acad. 24: 69. 1889. Not B. Palmeri S. Wats. 1883. 
Erect or procumbent annual, 2-6 dm. high, much branched, the branches stout, usually 
tinged with red, densely viscid-puberulent, often villous above; petioles stout, 0.5-3.5 em. 
long; leaf-blades ovate or lanceolate, or sometimes oblong, ovate-deltoid, or narrowly lanceo- 
late, 1-4.5 cm. long, 0.4-2 cm. wide, truncate to obtuse at the base, obtuse to attenuate 
at the apex, entire or often deeply sinuate, rather thin, green above, pale beneath, viscid- 
puberulent or sparsely short-villous, usually brown-punctate; inflorescence cymose-paniculate, 
much branched, the branches slender, glabrous, with viscous internodes, the flowers on pedicels 
1-2 mm. long, in short dense racemes; bracts broadly ovate, pink, thin, often as long as the 
flowers, ciliate, deciduous; perianth 1-1.5 mm. long, pink, puberulent or glabrous; stamens 
