PoLYTRiCHACE^.] 41 [Catkarinea. 



Hab. — In bare stony places. Not common. 



Catkarinea tenella Rohl. has been recorded as British, but we believe 

 erroneously, we have seen specimens so-called from the following localities : — 



I. — Strensall moor, Yorkshire (Dr. Spruce 1847); referred by Schimper 

 to C. tenella is certainly only a slender variety of C. undulata growing 

 in sand, and Mr. Boswell informs me that Schimper afterwards 

 called it A tr. undiilatiim Var. tenelliforme ; it may be the same as the 

 American Var. attenuatum of Bry. Eur. 



2. — Hell's mouth. Loch Goil head (Dr. Nichol) ; also a form of C. 

 undulata. 



3. — Wet places by the road between Ben Lawers and Killin (McKinlay 

 1865) ; belongs to C. undulata Var. minor. 



C. tenella is a good species ; dioicous, having stems \ — i in. high ; leaves 

 oblongo-lanceolate, scarcely undulate, dull green ; capsule oblongo-cylindric, 

 about half the length of that of C. undulata, inclined, lid large conic, tumid, 

 rufous, with a nearly straight pale beak rather shorter than capsule. 



3. CATKARINEA CRISP A James. 



Dioicous. Leaves distant^ crisped when dry, oblongo-lanceolate, 

 scarcely undulated, smooth at back ; lamellae i — 3, very narrow. 

 Capsule oblong, suberect ; lid conic, shortly rostrate. (T. V, C.) 



Syn. — Catkarinea crispa James in Proc. ac. nat. sc. Phil, vii, 445 (1855). Linde. in Not. ur 

 Sallsk, pro Faun, et Fl. fenn. fijrh. ix, 149 (1867). 



Atrichum crispum Sull. in Gray Man. Bot. U. St. 2 ed. 41 (1856), et Icon. muse. 73, 

 T. 46 (1864)'. Braithw. in Jour, of Bot. 1870, 225, t. 109, f. x. HoBK. Syn. br. m. loi 

 (1873). ScHiMP. Syn. muse. 2 ed. 530 (1876). 



Atr. laxifoUum WiLS. M.S. 



Atr. tortifoUum Sull. M.S. 



Dioicous ; in soft lurid-green tufts. Stems tall, slender, simple, 

 with very distant leaves, rooting only at base, 2 — 4 in. high. Leaves 

 large, crisped when dry, patent when moist, nearly flat, scarcely 

 undulated, quite smooth at back ; from a narrowed base, elongato- 

 oblongo-lanceolate, rather obtuse, border very narrow, rufescent, formed 

 of two layers of cells, remotely toothed, the teeth small and usually in 

 pairs ; nerve thick, vanishing in the apex, sometimes with a few spines 

 at back, lamellae very low and indistinct, i — 3, in section showing a 

 row of I — 3 rather lax rounded cells ; areolation lax, the basal cells 

 rectangular, hyaline, empty, the rest irregular, rounded and hexagonal, 

 chlorophyllose ; perichaetial bracts larger and more acute. Pedicels 

 slender, i — 3 in each perichsetium, capsule suberect, often a little curved, 

 oblong-obconic, wide-mouthed, brown ; lid conic with a subulate beak, 

 calyptra scabrous at apex ; peristome with scarcely any basal membrane, 

 the teeth narrow, unequal, hyaline with a purple median line. 



