99 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
KEY TO THE SPECIES. 
Pinnules smooth; indusia not continuous........................ 1. C. wrightii. 
Pinnules more or less pubescent or scaly; indusia continuous about 
the pinnules. 
Fronds tomentose, not scaly. 
Stipes densely tufted, at first woolly, becoming glabrate; 
fronds small, 10 cm. Jong or less...........2.2.... 2. C. feei. 
Stipes tufted, not so numerous, covered with brown to- 
mentum and a few narrow scales; fronds larger, 20 
to 40 cm. long..........2...-220 2222 e eee ee 3. C. eatont. 
Fronds scaly beneath. 
Fronds not at all tomentose, glabrous and bright green or 
with a few scales above...........-2.......0222... 4. C. fendleri. 
Fronds both tomentose and scaly beneath. 
Stipes tufted from a short thick rootstock; fronds to- 
mentose to glabrate above, densely matted- 
woolly and scaly beneath...............2..... 
Stipes scattered on a long slender rootstock; fronds 
white-tomentose above, very chaffy beneath, 
with cinnamon-brown scales.................. 6. C. lindheimeri. 
or 
. C. myriophylla. 
1. Cheilanthes wrightii Hook. Sp. Fil. 2: 87. pl. 110. A. 1858. 
TyPE LOCALITY: Western Texas. 
Rance: Western Texas to southern Arizona and adjacent Mexico. 
New Mexico: Telegraph Mountains; Bear Mountains; Condes Camp. Upper So- 
noran Zone. 
2. Cheilanthes feei Moore, Ind. Fil. 38. 1857. 
Myriopteris gracilis Fée, Gen. Fil. 150. 1850-2. 
Cheilanthes gracilis Mett. Abh. Senckenb. Ges. Frankfurt 3: 80. 1859-61, not Kaulf. 
1824. 
Cheilanthes lanuginosa Nutt.; Hook. Sp. Fil. 2: 99. 1858, as synonym. 
Type Loca.ity: ‘‘ Habitat ad rupes circa Hillsboro, in America Septentr.”’ 
Rance: Illinois and Minnesota to British Columbia, south to Arizona, Texas, and 
Mexico. 
New Mexico: On cliffs, throughout the State, at lower altitudes. Lower and 
Upper Sonoran zones. 
This is probably the commonest fern in the State, occurring most frequently in 
crevices in the perpendicular faces of limestone cliffs, especially under projecting 
ledges. Its stipes are always short, and the fronds mostly lie flat against the rocks, 
It is not restricted to limestone, but is found much less frequently on other rocks. 
3. Cheilanthes eatoni Baker in Hook. & Baker, Syn. Fil. 140. 1868. 
Cheilanthes tomentosa eatoni Davenp. Cat. Davenp. Herb. Suppl. 49. 1883. 
TYPE LocALITY: Western Texas. 
Rance: Western Texas to Arizona and southward. 
New Mexico: Sierra Grande; San Mateo Peak; Sandia Mountains; Socorro; 
Mogollon Mountains; Black Range; Burro Mountains; San Luis Mountains; Dona 
Ana and Organ mountains; White and Capitan mountains; Tucumcari Mountain; 
Queen. In the drier mountains and foothills, Upper Sonoran and Transition zones. 
4. Cheilanthes fendleri Hook. Sp. Fil. 2: 103. pl. 107. B. 1858. 
TYPE LocaLity: New Mexico. Type collected by Fendler (no. 1015). 
RanGeE: Western Texas to Colorado, westward to California. 
New Mexico: Common in all the mountain ranges. Among rocks, in the Upper 
Sonoran and Transition zones. 
