386 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
20. Boerhaavia gracillima Heimer], Bot. Jahrb. 11: 86. 1889, 
Boerhaavia anisophylla paniculata Coulter, Contr. Nat. Herb, 2: 356. 1894. 
_ Specimens examined: 
Mexico: Near Chihuahua, 1885, Pringle 665, type collection; Durango, 
1896, Palmer 629; Sierra Madre, Chihuahua, Townsend & Barber O79; 
Ixmiquilpan, Hidalgo, 1905, Purpus 1436; San José del Cabo, Lower 
California, 1890, Brandegee 487; Mountains of Cosihuiriachi, 1846, 
Wislizenus 174. 
New Mexico: Organ Mountains, 1904, Wooton: same locality, 1897, Wooton 
462, and several other collections. 
Texas: El Paso, 1884, Jones 4215; canyon near Van Horn, 1900, Eggert; 
Chenate Mountains, 1889, Vealley 405, type of B. anisophylla panicu- 
lata; Presidio de Rio Grande, Mexican Boundary Survey 1135a. 
20a. Boerhaavia gracillima decalvata Heimer], subsp. nov. 
Plant erect, branched; stems glabrous throughout; leaf blades oval or ovate, 
thick, glabrous, whitish beneath, obtuse, broadly rounded at the base; flowers 
single on pedicels 5 mm. long, 1 or 2 bractlets at the base of each flower but 
soon deciduous; flowers 9 mm. broad; fruit clavate, obtuse, with 5 rather 
thin ribs, glabrous. 
This differs from the species in its glabrous fruit and larger flowers. Type 
U. S. National Herbarium no. 148477, collected at Bone Spring, western Texas, 
1883, Havard 59, 
21. Boerhaavia anisophylla Torr. Bot. Mex. Bound. 171. 1858, 
Specimens examined: 
, Mexican Boundary Survey 1135, type collection, 
TExAS: Tornillo Creek, 1883, Havard 63, in part. 
Mexico: Santa Eulalia Mountains, Chihuahua, 1885, Pringle 685; Saltillo, 
Coahuila, 1898, Palmer 156; Mesillas to Saltillo, 1848, Gregg 533; 
west of Cerralvo, 1847, Gregg 829. 
Doctor Heimerl? describes a new variety of this species, B, anisophylla 
micrantha from Mexico. I have seen nothing which answers to his description. 
22. Boerhaavia tenuifolia A. Gray; Coulter, Contr. Nat. Herb. 2: 355. 1804. 
This is probably B. linearifolia glabrata A. Gray, Am. Journ. Sci. II. 15: 322. 
1853, but it is impossible to be certain, for the reason that no type was men- 
tioned in the original description of that variety. 
Specimens eramined: 
TEXAS: Camp Charlotte, 1889, Nealley 407, type ?; mouth of the Rio Pecos, 
1883, Havard 64; near Alamo de Cesario, 1883, Havard 65. 
New Mexico: Thirty-five miles west of Roswell, 1900, Harle 379, 
23. Boerhaavia linearifolia A. Gray, Am. Journ, Sci. IT, 15: 322, 1853. 
I do not believe that the difference in size of flowers is a reliable means of 
distinguishing this from the preceding species; there does not seem to be any 
remarkable difference in size judging from type material of both species. 
Specimens examined: 
TEXAS: Wright 608, 1724, type collections; Kerrville, 1894, Heller 1849: 
Upper Llano, 1884, Reverchon 1357; Mexican Boundary Survey, 1132; 
Llano, 1899, Bray 334; Big Springs, 1902, Tracy 8074; Knickerbocker 
Ranch, Tom Green County, 1880, Tweedy 90. 
@ Ann. Cons. et Jard. Geney. 5: 187, 
