Weisia.] BRYACEJE. 55 



densely jjapillose, with a round costa. Flowers monoecious. 



Capsule erect, oval or sub-globose, Avith a short inflated collum, 



smooth, of thin texture ; lid obliquely long-beaked ; annulus 



very narrow. Spores small. 



A strange genus {r/cmts paradoxum, as Schimper calls it), with, the 

 dichotomous fastigiate ramification of tlie Pleurocarpi, but a true Gym- 

 nostomum in the sliape of the leaves, their areolation, and the organiza- 

 tion of the capsule. 



1. A. Peckii, Sulliv. Tlesemhlmg A. compactzim, Sehwaegr., 

 the essential cliaracters of which are indicated in the description 

 of the genus, differing merely in the great size of the jilants, the 

 much longer narrowly lanceolate leaves gradually increasing in 

 length upward, subulate-pointed, slightly contracted above the 

 short concave ovate clasping base, carinate-plicate above ; areola- 

 tion more distinctly quadrangular in the uj^per part of the leaves 

 and chlorophyllose at the base ; fruit unknown. — Aust. Muse. 

 Appal, n. 64, and Icon. Muse. Suppl. 38, t. 25. 



Hab. Under overhanging rocks, Catskill Mountains, New York 

 (C.H.Peck). 



2. Peristome sim2)Ie. 



13. WEISIA, Hedw. (PL 1.) 



Mosses of small size, cespitose or pulvinate. Leaves lanceo- 

 late or linear-lanceolate and subulate, twisted when dry. Flowers 

 monoecious or dioecious, rarely synoecious. Capsule long-pedicel- 

 late, erect, oval-oblong, symmetrical or rarely slightly incurved, 

 with a peristome of 16 more or less perfect lanceolate teeth) 

 either entire or perforated or split at the apex, or to the middle, 

 solid, transversely articulate, granulose, slightly marked with a 

 vertical divisural line. Spores large, verrucose. 



1. W. viridula, Brid. Monoecious. Plants more or less 

 densely cespitose and ])ulvinate, bright green : stems about ^ 

 cent, long, nearly simple or with fastigiate branches : lower 

 leaves minute, the upper abruptly much longer, open and flex- 

 uous, crispate when dry, linear-lanceolate, mucronate by the 

 stout excurrent costa, enlarged at the pale concave and flat- 

 margined base, tubulose in the ujjper i)art by the involute 



