92 
HaAB.—California (Wilkes’ Expl. Exped., 1838-1842)*, Sierra 
Co. (Lemmon, 1874), San Diego (Orcutt, 1884)* ; Nevada, Goose 
Creek Valley (Watson, 1868, Expl. goth Par., No. 1372); Ore- 
gon (Wilkes’ Expl. Exped., 1838-1839)*, (Hall, 1871, No. 697), 
Multonomah Co. (Howell, 1877)*, (Geyer, No. 450); Washington 
Ter., Columbia River Valley (Northern Transcont. Survey, No. 
1225; Watson, 1880)*, Klikatat Co. (Suksdorf, 1878, 1883)*, 
Falcon Valley (Suksdorf, 1883, No. 227)*; (Hall and Harbour, 
1862, No. 254)*; Montana, Big Blackfoot. Valley (Watson, 
; 1880)*; Dakota, Stark Co. (Seiberg, 1884)*; Devil’s Lake 
(Nicollet, 1839)+; Kansas, Ellis (Watson, 1874)*, (E. N. Plank, 
1884)*; Arkansas (Nuttall)+; Texas (Lindheimer, 1847, No. 
746)*, between Cibols and upper Guadaloupe (Lindheimer, 1847, 
No. 404)*, Comanche Spring (Lindheimer, 1849)*, Western 
Texas (Wright, 1849, No. 811), (Drummond, 1870, Ex. Herb. 
Gay), Dallas (Hall, 1872, No. 861)*, Austin: (Hall, 1872; No. 
860)*, Dallas (Reverchon, in Curtiss’ N. A. Plants, No. 3821); — 
New Mexico (Wright, 1851, No. 2112); Arizona, Stephens’ 
Ranche (Lemmon, 1882, No. 2896); Mexico,San Louis Potosi 
(Schaffner, 1875-7, distributed as 17. Holtingiana)*, (also as M. 
minuta, Fournier, in Herb. Underwood); mene (Wright, — 
North Pacific Expl., Exped. 1856). 
Var. TENUIFOLIA (JZ. tenutfolia, Engelmann, Amer. Jour. 
Science, 2d series, vi, 89, note (1848)*; A. Braun, Monatsb., 
1863, 425; 1870, 740; 1872, 664; Underwood, |. c., 114). 
Plant somewhat slender, 5-15 cm. high, leaflets narrow (2-4 
mm. wide), more or less falcate, the apex often somewhat 
truncate and unequally toothed, villose with appressed hairs; 
sporocarps single, 5-8 mm. long, 4-5 mm. wide, the teeth di- 
vergent, subequal ; sori, g-I1 in each valve. 
Has.—Texas (Wright), Pierdenales (Lindheimer, 1847, No. 
745)* 
The above references include a wide range of characters, a 
few of which seem to call for special notice. Suksdorf’s Falcon 
Valley specimens are by far the finest seen, the stipes being cin- 
namon-brown, while the palez of the sporocarps are long and 
silky; this form may be regarded as typical of the species. 
_ Orcutt’s San Diego specimens are very large, approaching JZ. 
