132 



ON THE SPECIES OF TIMMIA. 



annulus persistent ; internal teeth yellow, spinuloso-appendiculate ; 

 antheridia cylindric, with a very short indistinct filament. 



Timmia megapolitana. Hedw. Stirp. crypt, i., p. 83, tab. 31 

 (but the bracts of perichaetium too short and broad), 1787, et Sp. 

 muse, p. 176 (1801). Timm. Fl. megapol., Prodr., p. 234 (1788). 

 Brid., muse, recen. n., p. 1, tab. 4, fig. 32 (1798), et Bry. Univ. 

 ii., p. 69 pp. (1827). Roth. Tent. Fl. Germ, in., p. 1, p. 254 

 (1800). Web. et Mohr. Tasch. pp. 254, 268-270 (1807). Bland. 

 in Sturm, Deutsch. Fl. n., Heft 9(1809). Schw^egr., Supp. 1., 

 p. ii., p. 84 (1816). Hessl. de Timmia, p. 16 (pp. ?), figs. 1 et 2 

 (1822). Laur. in Regensb. Bot. Zeit. X p. i., p. 294 (1827). 

 Hook, in Drum., muse. Amer. n., n. 273 (1828). Wallr. Fl., 

 crypt. Germ, i., p. 234 (1831). Huben. muse. Germ., p. 513 

 (1833). Br. et Sch., Bry. Eur. fasc. 10, Monog. p. 6 pp (1841). 

 Fiedl. Synop. Laubm. Meckl., p. 74 (1844). C. Mull. Synop. 

 i., p. 189 pp. (1848). Rabenh. Deutschl. Krypt., Fl. n., p. in., 

 p. 232 pp. (1848). Sull. in Asa Gray, Man. Bot. U.S., 1st ed., 

 p. 664 (1848), et 2nd ed., p. 642 (42) : 1856. Schimp. Synops., 

 p. 430 pp. (1860). 



T. cucullata. Michx. Fl. bor. Am. n., p. 304 (1803). 



T. polytrichoides. Brid. Muse. rec. n., p. hi., p. 153 pp. 

 (1803) — a. viridis. Brid. Sp. muse, in., p. 99 pp. (1817). 



T. viridis. Brid. MSS. pp. ex ejus Bry. Un. n., p. 70. 



Milium megapolitanum. Gmel. in L. Syst. Nat. 13th ed. n., p. 

 ii., p. 1327 (1791). 



Mn. Timmia. Hoffm. Deutschl. Fl. n., p. 53 (1795). 



Orthopyxis megapolitana. P. Beauv. Prodr. p. 79 (1805). 

 Var. p, norvegica. 



Taller ; leaves when dry cirrhate-crispate, the lower most fre- 

 quently fuscous-brown at base ; the comal yellow-green, erect, 

 lanceolate-linear with the base sometimes narrower. 



Timmia norvegica. Zetterst. in Ofvers. Vet. Akad. Forh. 

 xix., p. 364 (1862), et in Bull. Soc. Bot. France, 1862, p. 288. 



Habit. — Wet turfy places among Carices and Fissidentes, near 

 Malchin. First found by Timm in Mecklenburg- Sch werin. North 

 America. 



Var. (3, in rocky grassy places in the subalpine region of Central 

 Norway ; at Tjidtjak in Lapland, and Rothwand in Bavaria ; also 

 Ben Lawers, Scotland. 



Plant with the habit almost of Atrichum undulatum. Stem 

 branched or simple, strongly radiculose below; leaves thickish, not 

 pellucid , the base scarcely broader, and appressed to stem, chan- 

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

 equally coarsely serrate, the nerve vanishing in the extreme apex, 

 and usually giving off fuscous radicles ; cells of base linear, tuber- 

 culoso-papillose at back, the upper twice the size of those in the 

 preceding species, rounded-quadrate, incrassate, almost empty, 

 papillose on the upper surface. Bracts of perichastium semi- 



