270 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



not acuminate, entire, not papillose at the back; costa elevate, percurrent 

 and smooth, alar cells brown: capsule small, pedicel 1 cm. long. Mac- 

 Cat. 34. — On dry rocks in the open woods: Yarmouth, N. S. 



89. Dicraaoduntium Yirginicum Britt. — Dioicous: plants bright glossy 

 green: stems matted below by a red tomentum, leafy nearly to apex, de- 

 nudate roughened above, with a few leaves at summit: leaves erect or se- 

 cund, straight or curled and twisted, narrowly subulate from a short thick 

 base; caducous ones with a long slender smooth point; persistent ones ser- 

 rate, blade inflexed, cells densely chlorophyllose, filled with oil globules, 

 those of basal angles clear: perichsetial leaves from a short base suddenly 

 subulate, dentate at apex: pedicels lateral by innovations, pale, glossy 

 yellow, twisted in two directions, very slender, arcuate when young, becom- 

 ing erect before mature; capsules cylindric, ribbed only at mouth, beak 

 straight or curved, shorter than capsule; peristome bright red, not deep 

 set, teeth split unequally to middle, striolate at base, pale and granulose 

 above; annulus none, spores small, calyptra cucullate. Prelim. Cat. Flora 

 W. V. 488. — On sandstone boulders: Monongalia, W. Va. 



90. Dicrauodontiiim Millspanghi Britt.— Dioicous: plants light yel- 

 lowish green, silky, cespitose: stems matted with rufous tomentum at the 

 base, a few denudate-roughened by fragments of slightly caducous leaves: 

 leaves secund or erect-spreading, narrowly subulate from a broad base, 

 becoming tubular above by inroUed margins, basal angles not auricled, 

 filled by large hyaline cells to base of broad brown vein, those of blade 

 oblong or square next the vein, becoming spindle shaped and prosenchy- 

 matous towards margin; costa thick, excurrent into a slender dentate tip, 

 rough on back: perichsetial leaves sheathing half their length, tapering to 

 a long slender obscurely serrate tip, outer shorter, abruptly subulate, 

 more sharply serrate: pedicels recurved, burying capsule among leaves, 

 erect when old, stout and twisted in two directions; capsules pyriform- 

 cylindric w^ith a distinct neck; lid as long as capsule, straight beaked; 

 calyptra cucullate, entire; peristome red, connivent, teeth deep set, slender, 

 split to middle or perforate, striolate below, granulose above; annulus 

 none. Prelim. Cat. Floi-a W. Va. 488. — On sandstone boulders in deep 

 woods: Tibbs Run, W. Va. 



91. Camyylopus Sciiimperi Milde.— Dioicous: tufts dense, compact, 

 interwoven with rufous tomentum, fastigiate: stems slender, cuspidate, 

 light silky green above, fuscous below, dichotomous with alternate inno- 

 vations which are easily detached: leaves appressed w^hen dry, erect-spread- 

 ing, straight, rigid, narrowly lanceolate subulate, slightly toothed at apex, 

 channelled in lower part, becoming tubulose above from incurved wings; 

 costa broad, % width of leaf base; cells of the extreme base brown and 

 vesicular, above hyaline, very narrow at margin, elongate rectangular 

 towards the nerve, upper small and elliptic: perichEctial leaves sheathing. 



