66 UNITED STATES AND MEXICAN BOUNDARY. 
— СЕХОТНЕКА LAVANDUL#FOLIA, Torr. @ Gray,l.c. Between Eagle Springs and Van Horn’s 
well, Texas, June; Bigelow. 
_ (ENorggRA HARTWEGI, Benth. Pl. Hartw. р. 1; Gray, Pl. Wright. 1, p. 72. (E. Fendleri, 
E Gray, Pl. Fendl. p. 45. On the Rio Grande and its tributaries, from El Paso to Eagle Pass; 
April—June.  . 
(ENOTHERA TUBICOLA, Gray, Pl. Wright. 1, р. 71. Gravelly places neart he Limpio, July; 
Bigelow. 
CHNOTHERA CHAMENERIOIDES, Gray, Pl. Wright. 2, p. 58. Frontera and Cook's Spring, Texas, 
April; Bigelow. San Bernardino and Santa Maria, Chihuahua, March; Perry. 
.. GENOTHERA BISTORTA, Nutt., in Torr & Gray, Fl. 1, p. 508. San Pasqual, California, Мау; 
` Thurber. 
CENOTHERA GAURÆFLORA, Torr. Ё Gray, Fl. p. 510. Valley of the Gila, Sonora, Мау; 
Schott. Dry bed of a river near Monterey, California; Dr. Andrews. 
CENOTHERA CLAVJEFORMIS, Torr. & Prem. in Fremont's 2 Rep. p. 314; Torr. in Pacific Railroad 
Expl. 5, p. 360. Colorado desert; Schott. 
(ENOTHERA CARDIOPHYLLA, Torr. l. c. With the last; Schott. 
_. (iornrna VINOSA, Lindl. Bot. Reg. t. 1880. San Diego, California, May; Thurber. 
CHNOTHERA VIMINEA, Dougl. With the last, May; Thurber. 
GAURA VILLOSA, Torr. in Ann. Гус. New York, 2, p. 200. Mountain ravines and moist places 
near Rock creek, July; Bigelow. 
Gaura DRUMMONDII, Torr. & Gray, ГІ. 1, p. 518. On the lower Rio Grande, October, (іп 
flower and fruit) Schott. 
GAURA SUFFULTA, Engelm. in Pl. Lindh. 2, р. 190; Gray, Pl. Wright. 1, p. 12. Western Texas 
on the lower Rio Grande ; Schott. 
GAURA PARVIFLORA, Dougl., Torr. & Gray, Fl. 1, р. 519. Western Texas and New Mexico ; 
also in the valley of the Gila, May—J шу. 
GAURA COCCINEA, Nutt., Torr. & Gray, l. с.; Gray, РІ. Wright. 1, р. 73. Organ mountains, 
New Mexico, and down the valley of the Rio Grande to Eagle Pass, west to Sonora, April— 
July. 
STENOSIPHON VIRGATUS, Spach.; Monog. Onagr. Torr. goes Fl. 1, p. 520. Central Texas ; 
Thurber. 
— 
Z^ 
—" 
ue Pasqual, California ; Thurber. 
JUSSLEA REPENS, Linn. Mant. p. 381; Torr. & Gray, l. c. p. 520. Southwestern Texas and 
Sonora, April to October. 
LUDWIGIA NATANS, Ell. Sk.1,p. 581. Western Texas, October; Bigelow. Ojo Caliente, Chi- 
huahua; Thurber. А form with much smaller leaves than usual, was found in the Limpio 
river, by Bigelow. 
PROSERPINACA PALUSTRIS, Linn. Torr. & Gray, Fl. 1, p. 528. Pedro Pinta, Texas, October; 
Bigelow. 
MYRIOPHYLLUM HETEROPHYLLUM, Micha. РІ. 2, р. 191. Ojo Caliente, Chihuahua ; Thurber. 
- Т.ОАБАСЕЖ, . 
CEVALLIA SINUATA, Lag. Nov. Gen. & Sp. p. 11, t.1; Gray, Pl. Wright. 1, p. 74. Common 
on hill sides along the Rio Grande; also, in Sonora, May to October. 
EuLoBUs CALIFORNICUS, Nutt. in Torr Ё Gray, Fl. 1, р. 515. Valley of the Gila, Мау; Schott. 
