Anomodon. MUSCI. 407 



lanceolate and acuminate, serrate toward the apex, margins flat, the nerves scarcely 

 reaching the middle of the leaf : capsule erect, on a pedicel 6 lines long, cylindrical, 

 chestnut-colored; operculum conic. Engl. Bot. t. 1085; Bruch & Schimp. Bryol. 

 Eur. t. 461 ; Wilson, Bryol. Brit. t. 14 ; Fl. Dan. t. 2673; Sulliv. & Lesq. Muse. 

 Aui.-Bor. Exsicc. 2 ed. n. 349. Neckera gracilis, Muell. 



Var. duplicato-serratum, Lesq. Leaves unequally duplicate-serrate at the 

 apex. Mum. Calif. Acad. i. 30. Leptohymenium duplicato-serratam, Hanipe, 

 Liimaea, xxx. 460. 



On rocks near the bay of San Francisco {Pickering, Biyelow, Bolander) ; throughout Europe. 



49. PTERIGYNANDRUM, Hedw. 



Stems with arcuate-prostrate somewhat fascicled slender branches, branching 

 irregularly. Leaves erect-spreading or subsecund, crowded, ovate or elliptical, short- 

 acuminate, concave, 1 2-nerved at base ; areolation linear-flexuose, at the basal 

 angles quadrate, and rhombic above. Flowers dioecious. Calyptra cucullate. Cap- 

 sule long-pedicelled, erect, oblong. Peristome double, the inner processes short and 

 imperfect upon a very narrow basal membrane, without ciliolse. A single species. 



1. P. filiforme, Hedw. Small, loosely cespitose, greenish or yellowish : leaves 

 appressed when dry, papillose on the back, margins recurved, serrate at the apex, 

 sometimes 1-nerved to the middle : pedicel 9 lines long : capsule pale brown, nar- 

 rowly oblong ; operculum obliquely conic-rostrate : peristome small, pale yellow, 

 the inner very short and indistinct. Muse. Frond, iv. 18, t. 7 ; Bruch & Schimp. 

 Bryol. Eur. t. 460. Pterogonium jiliforme, Schwaegr. ; Wilson, Bryol. Brit. t. 14. 



Var. Leaves cristate-serrate at the apex ; the stouter nerve ceasing above the 

 middle. Leptohymenium cristatum, Hampe, 1. c. 459; Lesq., 1. c., so refers it. 



On shaded rocks and trees (Bigeloic, Bauer, Bolander) ; on the White Mountains and in Europe. 



CLIMACIUM, AVeb. & Mohr, is another genus of this group of fasciculately branched mosses, 

 readily distinguished by its erect tree-like habit. C. AMERICANUM, Brid., of the Atlantic States 

 and also found in Oregon (Hall), is 2^ or 3 inches high, with ovate-lanceolate leaves auricled at 

 base and costate nearly to the apex, serrate above, with minute elliptical areolation : capsule 

 cylindrical : peristome perfect, the processes on a very narrow membrane, equalling the teeth, 

 dehiscent, without ciliolae. Sulliv. in Gray's Man. 2 ed. t. 5. 



50. ANOMODON, Hook. & Tayl. 



On trees or rocks, the secondary branches ascending or erect, sparingly and irreg- 

 ularly or somewhat fasciculately branched. Leaves very densely rough -papillose 

 on both sides, not complanate, costate, areolation minute or punctiform. Calyptra 

 naked. Capsule long-pedicellate. Peristome double, without ciliolae, the processes 

 shorter than the teeth. Otherwise as the preceding. 



About 6 or 8 species, mostly of North America and Europe, placed in Hypnum by Mueller. 



LESKEA, Hedw., as understood by Schimper, is distinguished from Anomodon by its more 

 prostrate habit, the primary stem leafy like the branches ; flowers monoecious or dioecious. A 

 single species, L. POLYOARPA, Ehrh., of the Atlantic States and Europe, which has been collected 

 in Oregon, Hall. Its stem is 2 inches long or more, with ascending branches ^ to 1 inch high : 

 leaves ovate-lanceolate, spreading or secund, margins recurved below, entire, the costa ceasing 

 below the apex : flowers monoecious : capsule cylindrical, slightly curved : peristome whitish, the 

 processes equalling the teeth. Bruch & Schimp. Bryol. Eur. t. 470. 



1. A. Californicum, Lesq. Loosely cespitose, brownish yellow, sparingly 

 branched, slender : leaves imbricated in 4 ranks, spreading when damp, broadly 

 ovate, half-clasping and decurrent, acute, the margin folded abruptly backward, 

 carinate with a stout costa ceasing at the apex, the papillae upon the auricles longer 

 and spinose : fruit unknown. Mem. Calif. Acad. i. 30. 



On rocks, Monte Diablo, Bolander. 



