SYNOPSIS OF THE FLORA OF COLORADO. 155 



access, and that, too, the eastern slopes of the Kocky Mountains are / 

 mostly bare of trees and deprived of atmospheric humidity, the essen- 

 lial food of the mosses, this catalogue is already remarkably rich and 

 interesting in many points. 



SPHAGNUM ACUTIFOLIUM, Ehrh., var. TENERUM, Sulliv. & Lesqx. 

 Muse. Bor.-Am. ^o. 11. 



Hob. Uinta Mountains, Porter. Colorado, Hall; Downie. 



PHASCUM CARNIOLICUM, Web. & Mohr. A very rare species, found 

 as yet in Caruiola and Sardinia only. 



Hab. Western plains of Kansas ; upon silex. Hall. 



PHASCUM CUSPIDATUM, var. . PILIFERUM, Schreb. 



Hal). Along the Platte. Hall. 



WEISIA CRISPULA, Hedw. Immature specimens. 



Hub. Low mountains. Hall. 



WEISIA CIRRHATA, Hedw. This form approaches the former species. 

 By its capsule and its aunulus it is referable to W. cirrhata; the leaves, 

 however, are longer, their borders scarcely reflexed, and the articulations 

 of the pale red teeth less marked than in the normal form. An species 

 propria ?) 



Hab. Mountains. Hall. 



GY3IXOSTO3IU3I RUPESTRE, 



Hab.Gleu Eyrie, 1872. Porter. 

 DiCRA^roi GRACILESCENS, Web. & Mohr. 

 Hab. On wet rocks; high mountains. Hall. 

 DICKASOI VIRENS, Hedw. 



Hab. On stones in alpine brooks, near snow-range ; not rare. 

 I)icRANU3i PELLrciDini. Hedw., var. FAGIMONTANUM, Brid. The 

 same remarkable variety as found in Vermont. 

 Hab. Mountains; (coll. 1873). 



DlCRANOI VARIU3I, Hedw. 



Hab. Base of the mountains. Hall. 



DlCRANUM FUSCESCENS, Turn. 



Hab. Twin Lakes, in pine woods. Downie. (Expl. 1873.) 

 DICRAXOI MUHLENBECKII, Bryol. Eur. 

 Hab. Roots of trees, pine-region ; not rare. 



DlCRA^ritt RHABDOCARPOX, Slllliv. 



Hab. Alpine ; moist places on the ground. Hall ; Downie. A rare 

 species, found in good fruiting specimens, which confirm Sullivant's 

 diagnosis, made irom specimens too old, in Contrib. to Bry. 1, p. 172, 

 pi. iii. 



CAXPYLOPUS HALLI, (sp. nor.) Plantoe csespitosse, colorelutescente- 

 virides, sericeo-nitentes ; caulis vix pollicaris, pluries dichotonius, basi 

 iiudus (non radiculosus). Folia stricta, erecto-subaperta lanceolata, 

 tubulosa, e toto Itevia, integerrima, nervo latissimo foliam iiitegrani 

 eqnidem ad basiin occupante, cellulis alaribus paucis, rufescentibus 

 quadra to -in flat is. 



Hab. Mountains. Hall. 



CAMPYLOPUS FRIGIDUS, (sp. nor.) 



Priori nervo dilatato affinis ; diifert foliis angustis, longioribus, linear- 

 ibus, canaliculatis, margine versus apicem denticulatis, dorso scabris. 



As in the former species the medial nerve tills the whole leaf except 

 only four alar cells at the base; these cells are round. Two other forms, 



