CATALOGUE. 343 



Hab. — Twin Lakes, on damp rocks ; not common. 



Desmatodon Laureei, var. ovalis. — A smaller plant, with broader 

 leaves and larger, oval, nodding capsule, on a much shorter, upright, and 

 slightly flexuose pedicel. 



Hab. — Twin Lakes, on shaded ground. 



Barbula muceonifolia, Schwseg. 



Hab. — Twin Lakes, on rocks ; also a variety with a short mucro, simi- 

 lar to a variety of B. subulata, Brid. 



Baebula euealis, Hedw. 



Hab. — Twin Lakes, on rocks ; common. 



Geimmia apocaepa, Hedw. 



Hab. — Twin Lakes, on rocks ; common. 



Geimmia platyphylla, Mitt. — Distinguished from the above by its 

 leaves being obtuse and more than twice as wide, imbricated when dry ; 

 the younger leaves terminating with a very short diaphanous apiculus ; the 

 perichsetial leaves very laxly areolate for two-thirds of their length; the 

 capsule large and immersed. 



Hab. — Twin Lakes, on rocks; rare. 



Geimmia anodon, Brch. & Schp. — An interesting species, recognized 

 by its small hoary cushions of dark green at the surface, leaves ending in 

 a long hairy point, and the oval, gymnostomous, immersed capsule strongly 

 ventricose. 



Hab. — Twin Lakes, on dry rocks ; not common. 



Geimmia ovata, Web. & Mohr. 



Hab. — Twin Lakes, on exposed rocks on mountain sides. 



Geimmia ovata, var. /?. affinis, Brch. & Sch. 



Hab. — In like situations. 



Grimmia calypteata, Hooker. — In dense cushions ; stem branched ; 

 the upper erect leaves ending with a long, slender, piliferous point, the 

 cylindrical capsule covered with the large calyptra when mature. 



Hab. — Twin Lakes, on dry rocks ; not common. 



Hedwigia ciliata, var. leucoph^a, Brch. & Schp. — This variety is 

 known by its ciliated, long, diaphanous points to the leaves. 



Oethotbichum tenellum, Bruch. — In small cushions, with short, 



