﻿128 Underwood : Selaginella rupe^tris and its Allie- 



deeply channeled dorsally, ending abruptly in a short stout smooth 

 mostly curved green awn, 0.25-0.35 mm. long; margins with 

 few cilia or none, when present not exceeding 70/* in length ; - 

 spikes 1.5-2.5 cm. long, sharply quadrangular, the bracts broader 

 at base, lanceolate-ovate to ovate, with shorter and stouter awns. 



Apparently confined to high altitudes of the Sierra Nevada and 



neighboring mountains. Cottonwood Canon, Utah, alt. 9500 ft., 



S. Watson, no. 2370, in King's Expl. Exped., July, 1869 ; Clover 



Mts., Nevada, alt. 9000 ft., S. Watson, Sept., 1868. (U. S. Nat. 



Herb.) ; Canon Pass (Sierra Nevada) alt. 8000-9000 ft., Aug., 



1863 (Herb. D. C. Eaton); Alpine Co., California, alt. 8000 ft.. 



Hansen (Herb. D. C. Eaton) also Hansen, 879 (Herb. Kew) ; 



Mt. Whitney, Tulare Co., California " 1700 ft. above timber 



line" Coville & Funston, no. 2071, Death Valley Expedition. 



v/3. Selaginella mutica D. C. Eaton MS. in Herb. 



" Stems creeping, rather rigid, 3 '-6' long, divided and pinnately 

 branched ; leaves glaucescent, six-ranked, closely imbricated, half 

 a line long, oblong-ovate, convex and slightly grooved on the 

 back, obtuse and without a terminal seta, the margins ciliated with 

 about eight spreading cilia on each side ; spikes scarcely thicker 

 than the branches, quadrangular, the bracts broader than the 

 leaves and pointed or even obscurely mucronate." 



" Collected in New Mexico by the Mexican Boundary Com- 

 mission and in several places in Colorado by Thomas Meehan, 

 Mrs. E. J. Spence, etc." 



This clearly marked species I have found described as above 

 in Professor Eaton's collection and would add the following 

 characters partly in emendation of those noted above. The cilia 

 on the margins of the leaves are often 12-15 on either side (even in 

 Eaton's specimens), are long and slender, often 1 20 p or longer ; the 

 channels on the dorsal surfaces of the leaves are as clearly marked 

 as in 5. rupestris. The stems are well provided with roots 

 throughout their whole extent. - 



Additional specimens in the Columbia Herbarium were col- 



A 



Liver- 



more ; also specimens from La Cuerba, New Mexico, Bigelow 



1853, Whipple's Exped. My 



men 



J. W. Tuomev. In the U. S. Na- 



