12 UNITED STATES AND MEXICAN BOUNDARY. 
RUBIACEJE. 
GHALIUM APARINE, Linn. Sp. p. 108. Sonora, June; Thurber. 
GALIUM ASPERIMUM, Gray, Pl. Fendl. р. 60. Wet ravines, Organ mountains, New Mexico, 
April; Bigelow. Annual. Leaves 6 to 8 in à whorl. Not very distinct from G. Aparine. 
GALIUM CALIFORNICUM, Hook. d: Arn. Bot. Beech. p. 349; Torr. & Gray, Fl. 2, p. 20. Pine 
woods near Monterey, California; Parry. 
— GALIUM PROLIFERUM, Gray, Pl. Wright. 2, р. 61. Rocky hills, El Paso, April. 
_. GAIIUM wicRoPHYLLUM, Gray, РІ. Wright. 1, p. 81. Rocky places and sides of mountains 
along the upper Rio Grande, and at the Copper Mines, April. 
GALIUM SUFFRUTICOSUM, Nutt. in Torr. Ф Gray, Fl. 2, p. 21. San Diego, California; Thurber. 
= блиом Мвівнтп, Gray, Pl. Wright. 1, p. 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 scabrous, and not hairy. 
CEPHALANTHUS OCCIDENTALIS, Linn.; Torr. Ё Gray, Fl. 2, p. 31. Valley of the Rio Grande 
and westward to California, June—August. 
BOUVARDIA HIRTELLA, H. В. K. Nov. Gen. Ф Sp. 3, p. 384; Gray, Pl. Wright. 1, p. 80. 
Cañons of the Rio Grande, June—July ; Parry, Bigelow. 
OLDENLANDIA ANGUSTIFOLIA, Gray, Pl. Wright. 2, p. 68. Rocky places along the Rio Grande 
` and its tributaries, from El Paso downward, J une—August Sonora; Thurber. An extremely 
variable species. | 
OLDENLANDIA ACEROSA, Gray, Pl. Wright. 1. c. Hedyotis acerosa, Gray, Pl. Wright. 1, р. 81. 
^ Dry hill-sides, Devil's river and along the Rio Grande, September—October. 
OLDENLANDIA RUBRA, Gray, l. c. Hedyotis rubra, Cavan. Hills at the Copper Mines, June; 
^ Bigdow. 
OLDENLANDIA HUMIFUSA, Gray, l. c. Hedyotis humifusa, Gray, Pl. Lindh. 2, p. 216. Sand 
hills, Western Texas ; Bigelow. 
Dropra TERES, Walt. Fl. Car. p. 87; Torr. & Gray, Fl. 2, р. 29. On the lower Rio Grande; 
^ Schott. 
эн 
VALERIANACEÆ. 
VALERIANA SYLVATICA, Richards. App. Frankl. Journ. ed. 2, p. 2; Torr. & Gray, FI 43 p. 
47. Hills at the Copper Mines, April, May; Bigelow. 
VALERIANA EDULIS, Nutt. in Torr. & Gray, Fl. 1. c.; Gray, Pl. Fendl. p. 61. V. ciliata, 
Torr. & Gray, l. с. Six miles west of the Copper Mines, April, Мау; Bigelow. 
: PLECTRITIS CONGESTA, Lindl.; DC. Prodr. 4, p. 631. Monterey and east of San Diego, Cali- 
fornia, April; Parry. 
| pan a Ағ. iret. С”, 
c» AR ee "Alu. 67 
t s 4 si Ж У Л Ya А 7 =Z / / AI 
