72 



UNITED STATES AND MEXICAN BOUNDAEY. 



EUBIACEiE. 



Galium Apaeine, Linn. Sjp. p. 108. Sonora, June ; Thurher, 



Galium asperimuMj Gray^ PI. Fendl, p. 60. Wet ravines. Organ mountains, New Mexico, 



April ; Bigelow. A 



whorl. Not 



Galium Californicum, Hook. & Am. Bot. Beech, p. 349; Torr. dt Gray^ FL 2,j9, 20. Pine 

 woods near Monterey, California ; Parry. 



Galium prolifekum, Gray^ PI. Wright. 2, p. 67. Eocky liills, El Paso, April. 



Galium microphyllum, Gray^ PL Wright. 1, p. 81. Eocky places and sides of mountains 



along the upper Eio Grande, and at the Copper Mines, April. 

 Galium suffruticosum, Nutt. in Torr. & Grav.FL 2, n. 21. 



San Diego, California; Thurher. 



Galium Wrightii, Gray, PI. Wright, IjJP- 80. Burro mountains, and Mountains of Muerte ; 

 also on the Rio Grande, 70 miles below El Paso. The upper leaves, and sometimes the lower 

 also, are merely scahrous, and not hairy. 



Cephalanthus occidentalis, Linn,; Torr. <f; Grayy Fl. 2, p. 31. Valley of the Eio Grande 

 and westward to California, June — August. 



BouvARBiA hirtella, H. B. K. Nov. Gen. & Sp. 3, p. 384; Gray^ PI. Wright. 1, p. 80. 

 Canons of the Eio Grande, June — July ; Parry ^ Bigelow. 



Oldexlandia angustifolia, Gray^ PL Wright. 2, p. 68. Eocky places along the Eio Grande 

 and its tributaries, from El Paso downward, June — August Sonora; Thurher. An extremely 



variable species, 



Oldenlandia acerosa, Gray^ PL Wright. L c. Hedyotis acerosa, Gray^ PL Wright. 1,^. 81. 

 Dry hill-sides, DeviFs river and along the Eio Grande, September — October. 



Oldenlanuia rubra, Gray^ L c. Hedyotis rubra, Cavan. Hills at the Copper Mines, June; 



Bigeloiu. 



Oldexlaxdia humifusa, Grayy L c. Hedyotis humifusa, Gray, PL Lindh. 2, p. 216. Sand 

 hills. Western Texas ; Bigelow. 



DiODiA TERES, Walt. FL Car. p. 87 ; Torr. & Gray^ FL 2, p. 29. On the lower Eio Grande ; 

 Schott. 



VALERIANACE^. 



Valeriana stlvatica, Richards. App. FranTcL Journ. ed. 2, jp. 2 ; Torr. dc Gray, FL 2, p* 

 47. ' Hills at the Copper Mines, April, May ; Bigelow. 



Valeriana edulis, Nutt. in Torr. cfc Gray, FL l. c; Gray^ PL FendL p. 61. V. ciliata, 

 Torr. & Grayy L c. Six miles west of the Copper Mines, April, May ; Bigeloiu. 



Plectritis congesta, LindL; DG. Prodr, 4, p. 631. Monterey and east of San Diego, Call- 

 fornia, April ; Parry. 



^. 



