350 BULLETIN OP THE UNIVERSITY OP WISCONSIN. 



or indistinctly papillose, not long-acuminate from broad ovate base, re- 

 curved on borders below, long decurrent, open erect, denticulate all 

 around; areolation variable, often sub-rhomboidal; costa thick, reaching 

 nearly to apex: probably dioicous. Bull. Torr. Bot. Club 1 7: 278.^ On 

 rocks: Vancouver Island; British Columbia. 



502. Eurbyuchiiim semiasperum C. M. & Kindb. — Plants loosely 

 tufted, green: secondary stems sparingly radiculose, branching at one 

 side; branches generally simple, acute: leaves sub-patent, from a broad- 

 cordate base, fine acuminate, decurrent, nearly entire; alar cells numerous, 

 reaching to costa, other cells narrower, the lower dilated; costa vanishing 

 above middle: perichsetial leaves sub-oblong, short acuminate, erect, entire, 

 ecostate: capsule small, sub-oval erect or inclined; teeth papillose above; 

 segments shorter than high basilar membrane; lid narrow, short rostellate; 

 pedicel rough at least to middle, smooth below: monoicous. Mac. Cat. 

 207.— On rocks in a brook, British Columbia. 



503. Eiirliyiichium Sullivaiitii Holziug'eri Ren. & Card. — Branches 

 shorter, generally obtuse: leaves broader, shorter acuminate. Bot. Gaz. 



19: 239. 1894.— District of Columbia. 



504. Raphidostegium sub-demissiim Kindb.— Differs from i?. demis- 

 sum in branches cuspidate, sub-julaceous: leaves smaller, long subulate, 

 not or indistinctly recurved on borders: inflorescence dioicous. Mac. Cat. 

 208.— On rocks: Alaska. 



505. Raphidostegiiim niicans submersum Ren. & Card. — More robust: 

 stems very much elongated, pinnate, intricate: leaves remote; perichaetial 

 leaves longer. Revue Bryol. 20: 21. 1893. — Louisiana. 



506. Raphidostegiiim sub-adiiatuin C. M. & Kindb. — Tufts green, 

 intricate: branches short, sub-julaceous: leaves close, incurved at apex, 

 ovate oblong, denticulate to middle, reflexed at margins below; inner cells 

 sub-oblong, alar and marginal quadrate not vesiculose nor yellow; costa 

 short, double; perichsetial leaves larger, longer, appressed, a little longer 

 acuminate: capsule cylindric, curved, very much narrower than rostrate 

 lid; pedicel arcuate or flexuous: probably monoicous. Mac. Cat. 209. — 

 On trees in woods: Ontario; Quebec, 



507. Raphidostegium Kegelianuui Floridanum Ren. & Card. — 

 Scarcely distinct from the S. American type by the shorter and broader 

 capsule, rounded or less attenuate below. Bot. Gaz. 15: 61. 1890. — 

 Trunks of palms: Florida. 



508. Raphidostegium Roellii Ren. & Card. — Monoicous: delicate, densely 

 cespitose, shining, yellowish green: leaves sub-homomallous or complanate, 

 oblong lanceolate, decurrent, acuminate; margin plane or reflexed, denti- 

 culate above; costa double or very faint; cells elongated, narrowly linear, 

 alar strongly dilated and hyaline or yellowish; perichaetial leaves long- 



