272 BULLETIN OF THE UNIVERSITY OP WISCONSIN. 



99. Fissidens panpercnlns Howe. — Dioicous: minute, loosely gregari- 

 ous, flavesoent: stems decumbent or ascending: leaves 3-5 pairs, increas- 

 ing in size upward, lowest minute, upper oblong to obliquely spatulate-ob- 

 long, acute or shortly acuminate, margin slightly serrulate crenulate; bor- 

 der none; costa stout, vanishing below apes; vaginant lamina l-g to J^ 

 length of leaf, unequal; inferior lamina ending at about middle of vaginant 

 lamina in upper leaves or reaching base in lower; cells of vertical lamina 

 mostly hexagonal, smaller and oval at margin, enlarged and oblong rect- 

 angular next to costa, those of vaginant lamina becoming longer and nar- 

 rower towards base: seta terminal, flexuous, pale yellow; capsule yellowish, 

 oval or oval-oblong, inclined or cernuous, slightly arcuate when dry; lid 

 conic-rostellate, about equaling capsule; peristome red, normal; annulus 

 pale, of 2-3 rows of deciduous cells. Erythea 2: 97. 189i. — On moist banks 

 in company with F. limbatus Sulliv., Marathon county, Cal. 



100. Ceratodon conicas Hpe. — Dioicous: tufts cespitose, dull yellow 

 green above, fuscous below: stems short, rather slender, diehotomously 

 branched: leaves erect appressed, deep green, smooth, crowded at tip into 

 a small closed coma, straight wet or dry, rather broadly ovate lanceolate, 

 margin quite entire, revolute to apex, nerve thick, excurrent into a long 

 point; cells all small, regularly quadrate, basal larger and pellucid: peri- 

 chaetial leaves convolute-vaginant, obtusate with an excurrent nerve, laxly 

 areolate: capsule on a pale red seta, erect, ovate-elliptic, rather wide, fus- 

 cous, when dry and empty but little altered, sulcate in upper part, not 

 strumulose; lid purple, short conic; teeth pale, red at base, yellowish above, 

 erect with fewer articulations, scarcely bordered externally. Braithw. 

 Brit. Moss. Flora 1: 175. — At the base of a stump, Spence's Bridge, B. C. 



101. Ceratodon heterophyllus Kindb. — Agrees with C. purpureus, in 

 shape of capsule, stem leaves, not excurrent costa and revoluble annulus, 

 but capsule often more curved and distinctly strumose; agrees with C. 

 conious in peristomial teeth having few articulations: differs from both in 

 blunt perichsetial leaves, and is also very peculiar in short concave sub- 

 oval leaves of long shoots. Ott. Nat. 5: 179. — On earth: St. Paul Island, 

 Behring Sea. 



102. Trichodon flexifolins Ren. & Card.^ — Loosely cespitose, green: 

 stems erect, simple, short: lower leaves small, lanceolate subulate, upper 

 larger, patulous, very flexuous, from an oblong base gradually narrowed 

 into a long linear subulate canaliculate subtubulose point, sinuate at 

 margins, toothed at apex, and with a broad obscurely excurrent costa; 

 basal cells rectangular, elongated (1 : 2-4), others small, quadrate, very 

 chlorophyllose, with transverse walls slightly prominent: perich»tial leaves 

 similar, but dilated and sub-sheathing at base: male flowers on same plant, 



iTho authors of this species are not certain as to its generic positior, but state that 

 by its vegetative system it is somewhat allied to T. cylindrieus. 



