656 MUSCI. (MOSSES.) 



TRIBE XXV. 



61. CRYPH.EA, Molir. (Tab. 19.) 



Calyptra conic-mitriform, papillose at the apex, small. Opercuium conic. 

 Capsule immersed, ovate-oblong, short-pedicellate, annulate. Peristome double ; 

 the exterior 16 lanceolate-subulate teeth remotely articulated, granulated ; the 

 interior 16 subulate cilia, the basilar membrane nearly obsolete. Inflores- 

 cence monoecious: antheridia oval, with long pedicels and short paraphyses. 

 Rather slender Mosses, growing on trees, with leafless creeping stems and 

 ascending or pendulous and subsimple densely leafy branches, bearing in lines 

 or clusters numerous perichaetia enveloping the capsule. (Name from Kpv<j)alos, 

 hidden, in allusion to the concealed capsule.) 



1. C. glomerata, W. P. Sch. The ascending branches nearly simple, 

 1'long; leaves crowded, when dry appressed, when moist recurved-spreading, 

 ovate-acuminate, minutely-serrulate at the apex, semi-costate, with a minute oval 

 areolation ; annulus broad ; perichaetial leaves obovate-oblong, suddenly cuspi- 

 date. (Daltonia heteromalla, var. Hook. $- Wils. in Drum. Muse. 2d coll. No. 

 99.) Southern States: common. Larger than the European C. heteromalla, 

 Brid., with more crowded spreading leaves, much shorter peristome, and larger 

 epores. (Tab. 19.) 



2. C. nervosa, Hook & Wils. Has the aspect of No. 1 ; leaves when 

 dry erect, not appressed, with recurved margins; costa extending to the point; 

 calyptra split on one side ; annulus narrow ; perichaetial leaves longer-lanceo- 

 late and papillose on the back. Grows with the last. 



3. C. inundata, Nees. (in Neuvied Trav.) Stems pendulous, loosely 

 pinnately-branched ; branchlets recurved at the apex; leaves distant, oblong- 

 lanceolate, carinate, the lower ones complicate, oblique ; costa heavy, excurrent, 

 capsules oval, unilateral on the stems, immersed in the long ecostate perichae- 

 tial leaves ; cilia of the interior peristome red, persistent, incurved at the apex, 

 as long as the teeth. Floating in water, and attached to the immersed branch- 

 es of trees, Wabash, Fox, and Black Rivers, Illinois. Scarcely a Cryphaea : 

 very probably Dichelyma subulatum, or a closely allied species. 



TRIBE XXVI. LEUCODONTE^. 



62. L-EIICODON, Schwsegr. (Tab. 18.) 



Calyptra dimidiate, large, clasping the pedicel. Opercuium conic-rostrate. 

 Capsule broadly oval, its pedicel enclosed by the long sheathing perichasth. Peri- 

 stome double; the exterior 16 linear-acuminate, whitish, granulated teeth more 

 or less perforated along the medial line ; the interior (when present) a simple 

 annular membrane extending the length of the teeth. Inflorescence dioecious. 

 Species of moderate size, with a filiform and leafless creeping primary stem, 

 and numerous terete nearly simple branches, densely clothed with ovate-acumi- 

 nate ecostate leaves. (Name composed of XCVKOS, white, and oSobi/, tooth, from 

 the color of the outer peristome.) 



