Dichodontium.] BEYACE^. Q1 



4. C virens, Schimp. Plants more or less densely cespi- 

 tose : leaves narrowly lanceolate, subulate from the lialf-slieatli- 

 ing oblong base, recurved or revolute on the borders, entire or 

 serrulate at the apex, smooth and minutely areolate ; costa nar- 

 row, percurrent or slightly excurrent : capsule ovate-oblong or 

 subcylindrical, more or less curved, constricted under the orifice 

 and smooth when dry ; collum short, abruptly inflated and 

 strumose on one side and truncate underneath ; lid erose at 

 base ; teeth of the peristome more regularly bifid ; annulus none. 

 — Syn. Muse. 63. Dicranum virens^ Hedw. Muse. Frond, iii. 

 77, t. 32 ; Bryol. Eur. t. 48 and 49. 



Var. Wahlenbergii, Bruch & Schimp. Stems slender : 

 leaves longer-subulate, slightly reflexed on the borders, obscurely 

 denticulate, much crispate when dry : capsule shorter, much 

 curved when dry. — Sulliv. 1. c. Oncophorus Wahlenbergi% 

 Brid. Angstroemia^ Muell. 



Var. serratura, Bruch & Schimp. Loosely cespitose : 

 leaves divaricate-spreading, curling, coarsely dentate ; capsule 

 less strumose. 



Var. compactura, Bruch & Schimp. Densely tufted, 

 yellowish green ; plants shorter and more slender : the leaves 

 shorter, abruptly narrowed from an enlarged base, much cris- 

 pate and very entire : cajjsule short, gibbous, rounded-strumose 

 at the neck. 



Hab, Subalpine regions, along streams and In deep glens, on trunks 

 and decayed wood; not rare and very variable. The first variety in the 

 Kooky Mountains (Drummond) '^ the second in Oregon [E. Hall); the last 

 in the White Mountains (Oakes), and in Tuolumne Canon and Mono Pass, 

 California, at 9,000 feet altitude [Bolander). 



18. DICHODONTIUM, Schimp. 

 Plants loosely cespitose. Leaves soft, opaque, divaricate- 

 squarrose, lingulate-lanceolate from an enlarged half-sheathing 

 base ; borders irregularly sernilate ; medial and basilar areolation 

 rectangular, quadrate and very small on the borders, quadrate, 

 chlorophyllose and obscure at the apex. Flowers dioecious. 

 Capsule solid, cernuous, smooth ; collum distinct, not strumose. 

 Peristome large ; teeth cleft to below the middle. Annulus 

 none. — Dicranum^ Auct., in part. 



