Hypnace^.] 121 [Lesquereuxia. 



not considered necessary, yet several authors as C. Mueller and Lindberg 

 were doubtful as to the identity of the next species, and retained the name 

 filamentosa. Dr, Best of New Jersey first drew attention to the subject, with 

 the result of proving that they are two distinct species and that Dickson's 

 airovirens is the same as the modern patens. 



3. LESQUEREUXIA ATROVIRENS {Dicks.) Best. 



Dioicous; in dark green tufts, irregularly pinnate, the branches 

 obtuse. Leaves divergent on all sides, oval and decurrent at base, 

 tapering into acute points, biplicate, recurved at margin and serrulate 

 above, papillose. Capsule oval, long. (T. CVII, E.) 



Syn. — Hypnum atrovirens Dicks, (excl. syn. Dillen.), PI. crypt. Fasc. II, 10 (1700) et Herb. 

 (Mus. Brit.) 



Leskea (?) patens Lindb. in Soc. pro Fauna et Fl. fenn. Oct. 1880. 



Lesquereuxia patens Lindb. in Medd. af Soc. pro Faun. Fl. fenn. 14 heft, p. 75 — 77 (1887). 

 Hagen in Rev. bryol. i8gi, p. 7. 



Pseudoleskea ticinensis Bottini in Proc. verb. Soc. Toscana Sci. nat. 18 genn. i8gi. 



Pseudoleskea atrovirens Vax. patens Hagen in sched. 1894. 



Pseudoleskea heterocladioides Kindb. Rev. bryol. 1895, p. 83. 



Pseudoleskea patens Limpr. in Rabenh. D. kr. Fl. Laubm. ii, 806, fig. 349 (1895). 



Pseudoleskea atrovirens Best Bull. Torrey Bot. Club, xxvii, 224 (1900). 



Dioicous ; in dull green depressed tufts. Stem trailing, irregularly 

 pinnate, with decurved branches, obtuse at points ; paraphyllia numerous 

 small, lanceolate. Leaves rather lax, spreading horizontally on all sides 

 when moist, decurrent, broadly oval at base, tapering into short acute 

 points, more symmetric, biplicate, the margin recurved, serrulate above, 

 nerve vanishing below point, branch-leaves smaller, nerved to middle ; 

 cells chlorophyllose, roundish, equal, quadrato-rectangular at base, with a 

 row at margin placed transverse, upper oval, all with a central acute 

 papilla on each surface. Inner perichsetial bracts lanceolate, acute, 

 nerved ; seta purple, capsule cernuous, longish oval, gibbous, reddish- 

 brown, lid conic, pointed, peristome yellow. Male infl. oval, bracts 

 ovate acute, nerveless. 



Hab. — Alpine rocks, very rare, Fr. 4. 



Scotland on trees (Dickson). Ben Lawers (Greville. Monington 1899) ! ! Canlochan, 

 Braemar c. fr. (W. Smith) ! in Herb. Hagen. 



It is unfortunate that Dickson's specimens are all stuck down on loose 

 pieces of paper, and are not localized, but Mr. Gepp kindly shewed me the 

 specimen referred to by Dr. Best and there is no doubt of its correctness ; if 



