ON THE 8PECIB8 OF TIMMIA, 131 



Var. ft, alpina, Habtk. op. cit. 3rd ed., n., p. 202 (1838) — var. 

 y, bavarica. Huhen. Muse. Germ. p. 514 (1833). 



Var. ft, Salisburgensis. Larger and taller, with leaves less 

 dense, aeute and recurved, their cells one half larger, less chloro- 

 I'livlliferous, subhyaline ; bracts of andrceciuin more shortly 

 acuminate; antheridia twice longer than the filament. Timmia 

 Salisbury ensis. Hopp. MSS. ex auct. Laur., in op. cit., p. 295. 



T. alpina. Laur. In op. cit., p. 294 ? Var. ft, salisburgensis. 

 Laur. In op. cit. p. 295. 



T. austriaca. Var. ft, alpina. Huben. 1. c. 



Habit. — In the damp shady fissures and holes of stones and 

 rocks in the mountain regions of Europe, as in Switzerland, 

 Austria, Central Germany, and Scandinavia, often associated with 

 T. Austriaca, this plant grows commonly, fruiting freely, but 

 appears to prefer more elevated localities. Collected also in the 

 peninsula of Kamtschatka by Tilesius. Var. ft, has been observed 

 in the Alps of Southern Europe. 



Plants with the habit almost of Polytriclium gracile, or the small 

 forms of P. formosum, ferrugineo-fuscous below, green above ; 

 leaves rigid, scarcely pellucid, opaque when dry, the base yellowish 

 or pale brown, scarcely broader and appressed to stem, deeply chan- 

 nelled ; the margin straight, often lightly undulate below, un- 

 equally coarsely serrate, nerve vanishing in the extreme apex, 

 glossy when dry ; cells of base linear, upper twice smaller than 

 those of the preceding species, quadrate, slightly incrassate, quite 

 filled with chlorophyl, very minutely papillose on the upper surface 

 of the leaf, smooth on the back. Bracts of perichaBtium semi-vaginant, 

 vaginula short, lanceolate-ovate ; capsule horizontal or subnutant, 

 sometimes very slightly oblique, striate when dry ; annulus narrow, 

 double ; teeth of outer peristome strongly rngulose at apex, 

 slightly papillose, those of the inner one nearly smooth ; spores 

 greenish ; calyptra as in the preceding species ; andrcecium axillary 

 among the innermost bracts of the perichajtium, often stipitate, its 

 bracts about 10, very broad, unequally serrate, of lax texture, 

 outer obtuse, suddenly longly acuminate, with the nerve disappear- 

 ing in the acumen, inner more gradually acuminate ; antheridia 

 equalling the obconical filament, or one-half longer, equal to the 

 paraphyses. 



3. Timmia Megapolitana. Hedw. 



Autoicous ; pale green, very readily softened ; stem short, 

 distant leaved ; leaves accrescent, fragile, curled when dry, from a 

 scarcely semi-vaginant yellowish base, erecto-patent, gradually 

 more narrowly lanceolate, rather obtuse, not plicate, with the back 

 of the nerve smooth ; bracts almost twice longer, linear-lanceolate, 

 acute ; seta stoutish, about an inch long; capsule obovate-oblong, 

 oblique, cernuous, passing almost gradually into the seta, smooth ; 

 lid hemispherical, with the centre impressed and mammillate ; 



