284 UNITED STATES AND MEXICAN BOUNDARY. 
CHEILANTHES WRIGITIT, Hook. Sp. Fil. 2, p. 81, t. 110, А. Near the Rio Grande and the Gila. 
CHEILANTHES ALABAMENSIS, Kunze in Sill. Jour. (2d ser.) 6, p. 87; Hook. 1. c. p. 89, t. 103, В. 
Rocky and shady ravines, at the mouth of the Pecos; Bigelow. Оп the lower Rio Grande, Schott. 
CHEILANTHES TOMENTOSA, Link. l. с р. 65; Hook. l. с. p. 96, t. 109, A. From the Rio Grande 
westward along the Gila to the Colorado. 
CHEILANTIIES LANOSA. C. vestita, Hook. l. c. p. 98, t. 108, В. Nephrodium lanosum, Micha. КЇ, 
Bor.-Am. 2, p. 210?  Myriopteris gracilis, Fée, l. c. р. 150, t. 29, f. 6. Along the Rio Grande; 
‘Wright. The name of C. vestita unquestionably belongs to the fern described and figured by 
Professor Gray under that name in the Manual, (2d ed.) p. 592, t. 10. 
CHEILANTHES LINDHEIMERI, Hook. 1. c. p. 101, t. 107, А. At the Чаң Мїпез and in Wild- 
rose Pass; Bigelow, Schott. 
ча» FENDLERI, Hook. I. c. p. 103, ё. 107, B. Near the Copper Mines, New Mexico; 
Bigelow. Sonora; Parry. Some of the specimens are fully a foot high, and have the pinne 
more remote than usually. 
CHEILANTHES ASPERA, Hook. I c. p. 111, ¢. 108, А. Lower Rio Grande; Schott. Near the 
Copper Mines and along the San Pedro; Bigelow. The characters of a new species of this 
interesting genus are subjoined. 
CHEILANTHES GRACILLIMA (sp. nov.): fronde lineari-oblonga bipinnata; pinnis pinnulisque con- 
fertis, pinnulis sessilibus ovatis obtusis superne pauciter albo-pilosis subtus tomento denso fulvo 
obtectis, margine reflexo involucrem continuum efficienti.—Stipites ebenei plures ecaudice 
paleaceo subrepente erecti, Rachides primarii secundariique cum stipite juniore paleis gracilibus 
instructi. Cascade mountains of Oregon at 7,000 feet of altitude, latitude 449, collected by Dr. 
Newberry in Williamson's Expedition, and by Dr. Bigelow in Whipple's Expedition. A very 
delicate little fern of the Lendigera group. Btipes 2—3 inches long; frond half as long, and 3-5 
lines wide; ріппге 7-10 pairs ; pinnules 2-3 pairs. 
| HYPOLEPIS CALIFORNICA, Hook. 1. c. p. 71, t. 88, А. Collected between San Diego and the 
Colorado; Schott. 
ХотносньжхА RUFA, var. 2. Presl, Relig. Henke. 1, p. 19; Martens & Galeotti, l. c. p. 45; Leib- 
mann, l. c. p. 62. Cheilanthes ferruginea, Willd. Herb.; Link. 1. c. p. 95. Along the San Pedro 
and Rio Grande, and on the Organ mountains of New Ме. 
NomTHOCHLENA SINUATA, Kaulf. l. c. р. 135; Kunze in Schk. Fil. Supp. 1, р. 95, t. 65. Acrosti- 
chum, Swartz, Syn. p. 14. Western ikea from San Antonio to the Rio Grande, and along 
that river northward to New Mexico. О. Wright, No. 814, (1849.) A variety of this species 
having smaller and crenated, not pinnatifid pinne with whiter ciliated scales beneath, and а 
denser stellate pubescence above, looking through a lens like newly fallen snow, was collected 
in rocky places near the San Pedro and the Gila. 
NoTHOCHLENA PULVERACEA, Kunze in Linnea, 13, p. 135, Ф 18, p. 338; Liebmann, Mex. Bregn. p. 
63. Lower Rio Grande; Schott. Rocky places on the Pecos and San Pedro; Bigelow. No. 
820 and 2124, Wright. Kunze and Liebmann consider this distinct from Cheilanthes pulveracea, 
Presl, Rel. Henk. 1, p. 64; Hook. Sp. Fil. 2, p. 18. | 
NorHOCHLENJE CRETACEA, Liebmann 1. с. p. 64? At Painted Camp and at the entrance to 
Wild-rose Pass; Bigelow, Schott. С. Wright, No. 821, (1849.) Our plant agrees well with 
the description cited, but has not been compared with authentic specimens. It grows in tufts 
about 6-8 inches high, and has much the appearance of Gymnogramme triangularis, Каш/.; 
„де 
