Leskea.] BRYACE^. 303 



of U. States, 59, and Icon. Muse. 125, t. 78 ; Sulliv. & Lesq. 

 Muse. Bor.-Amer, Exsicc. n. 245. Hypnum fahronicefoUum^ 

 Muell. Syn. ii. 271. 

 Hab. Base of trees, Middle and Southern States; rare in fruit. 



5. L. tristis, Cesat. Plants widely cespitose, loosely intri- 

 cate, dirty green ; stems slender, jjrostrate or j^endent, branching 

 and ii-regularly or pinnately ramulose; branchlets erect or 

 curved, filiform : leaves very brittle, squarrose when moistened, 

 nari'owly Ungulate, obtuse or short-apiculate from a broad sub- 

 erect clasping base, crenulate on the margins by large protu- 

 berant cells ; surface verruculose ; costa slender, vanishing at 

 the middle ; upper areolation irregularly round-hexagonal, 

 oblong-rectangular in the middle toward the base, transversely 

 hexagonal near the borders: fruit unknown. — DeNot. Syll. 67. 

 fj. fragilis, Hook. &> Wils. in Drumm. Muse. Amer. (Coll. II.), 

 n. 101 ; Sulliv. Muse. AUegh. n. 71. Anomodon (?) tristis, 

 Sulliv. Mosses of U. States, 58. 



Hab. Comraon on trees in wooded swamps and along rivulets, particu- 

 larly on Hornbeam. 



6. L. Austini, Sulliv. Moucecious : plants of medium size, 

 intricate-cespitose ; stems irregularly divided into very unequal 

 branches: leaves spreading or subsquarrose when moistened, 

 ovate, long and narrowly acuminate, entire, costate to above the 

 middle, papillose on both faces ; cells thick, round-quadrate near 

 the basal border, longer, rhomboidal-elliptical above ; perichai- 

 tial leaves longer, lanceolate-acuminate : capsule erect, cylindri- 

 cal-oval, with a small orifice; teeth comparatively short, broadly 

 lanceolate, attached far below the orifice, papillose on both 

 faces, opaque; inner membrane yellowish brown, scarcely passing 

 above the orifice of the capsule, undivided ; lid short-conical ; 

 annulus none. — Icon. Muse. Suppl. 81, t. 61. 



Hab. Stone walls, New Jersey (Austin); trunks of trees, Illinois 

 (Wolf). 



The generic position of this species is still uncertain, related as it is in 

 some characters to Leskea, in others to Habrodon. 



7. L. pulvinata, Wahl. Syncecious : plants soft, cespitu- 

 lose, irregularly ramose and ramulose : leaves ovate-lanceolate, 

 slightly unequilateral, very entire, obsoletely costate, soft and 

 smooth ; areolation loose, rhomboidal-quadrate at the angles and 

 margins, chlorophyllose ; periehaetial leaves ecostate, longer, 

 half-sheathing, with a narrower areolation : calyptra whitish, 



