42 : UNITED STATES AND MEXICAN BOUNDARY. | 
LIMNANTHACEA:. 
LIMNANTHES DouGLastr, А. Br.; Torr. & Gray, FT. 1, p. 209, Benicia, California, March ; 
Thurber. | 
ZYGOPHYLLACE A. 
LARREA MEXICANA, Moric. ; Torr. in Emory’s Rep., p. 188, t. 3; Gray, Gen. lil. t. 147. Along 
the boundary line from the Rio Grande to California. 
PoRLIERA ANGUSTIFOLIA, Gray, РІ. WrightZ, р. 28. Guiacum angustifolium, Engelm. Plains 
near Eagle Pass, Bigelow, Deadman’s Hole; Parry. 
FaaoNrA CALIFORNICA, Benth. Bot. Sulph., p. 10.; Torr. in Pacif. В. В. Ex., Expe. рі. 6, р. 
359, t. 1. Rocky and hill sides of the lower Colorado, California, February ; Schott. 
GuracuM COoULTERI, Gray, Pl. T'hurb. p. 312. Hills between Rayon and Ures, Sonora; 
Thurber. 
 KALUISTPRGEMIA GRANDIFLORA, Torr. in Gray, Pl. Wright. 1, р. 26. Borders of the Rio Grande 
jn western Texas ; Chihuahua and Sonora, July. B Schott states that it is called Mal de Ojo 
by the Sonorians. 
KALLSTR@MIA MAXIMA, Torr. & Gray, Fl. 1, p. 213. Common along the Rio Grande, and 
westward throughout the Mexican States and southern California. 
BUTACEE. 
— KorBERLINIA SPINOSA, Zucc. ; Gray, Pl. Wright. 1, р. 30, & 2, p. 26. Rich soils in various 
vt? 
places along the Rio байг and in the Mexican States westward, May—August. ‘In 
favorable situations this shrub sometimes attains the height of 8 or 10 feet.” Thurber. 
PEGANUM Mexicanum. Gray, 1. c. 1, р. 30, adnot. Low places near the Eagle mountains, 
June; Bigelow. El Gallo, Chihuahua, November ; Thurber. 
ТилмховмА TEXANUM. Rutosma Texanum, Gray, Gen. Ill. 2, p. 114, t. 155. Hills between 
the Pecos and Devil's river and the Rio Grande ; also along the latter river from El Paso down- 
ward, and in western New Mexico, Sonora, etc., flowering throughout the season. 
THAMNOSMA MONTANUM, Torr. & Frem. in Frem. 2d Rep., p. 313. Sierra Tale, Sonora ; 
Schott. San Felipe, California, Мау; Thurber. 
AsTROPHYLLUM DUMOSUM, Torr. in Bot. Pope’ s Report, p. 161. Mountains about thirty-five 
miles below El Paso, in Chihuahua, July (in fruit) ; Bigelow. Borders of the Rio Mimbres, Dr. 
Henry, United States army. Western slope of the Sierra del Pajarito, Sonora, July, (just past 
flowering,) Schott, (not on the Rio Grande, as erroneously stated in the Botany of Captain Pope’s 
Report.) Since the description quoted above was written, other specimens of this remarkable 
plant have been received, but none of them with perfect flowers. In one or two instances 
withered, imperfect flowers were found, and we can now give a nearly complete character of the | 
genus, which rather роде to the Diosmeæ than to the true Rutacecw. 
Oy oe 4 ASTROPHYLLUM. 
—5- х десин: sepalis obtusis. Petala 4—5, obovata. Stamina 8—10. 
| Ovarium. ы. disco hypegyno 8 一 10-lobo insidens, 4—5-lobum, 4—5-loculare ; loculis 
