Supplement.] 244 



question. The fertile American plant differs much from the British in habit, for 

 it grows in dense erect tufts about one inch high, and the stem leaves, as in ours, 

 present much variation in the length of the nerve. Figures 2 and 5 are drawn 

 from Sullivant's Icones. 



AMBLYSTEGIUM (§ Scorpidium) TURGESCENS (J^ns.) Lindb. 



Dioicous ; in dense-leaved, tumid yellowish-green tufts. Leaves 

 imbricated, julaceous, broadly oblong, concave, suddenly terminated by a 

 very short apiculus, nerve short, forked, cells very narrow and vermicular, 

 reetangular at base. (T. CXXVIII, D.) 



Syn. — Hypnum turgescens Jensen Vidensch. Medd. fra Naturh. foren. i Kjobenh. 63 (1858). 

 ScHiMP. Synops. 648 (i860), 2 ed. 794. Boulay Muse. Fr. 18 (1884). HusN. Muse. Gall. 

 415, t. 120 (1894). LiKPR. in Rabenh. D. kr. H. iii, 563 (1899). 



Stereodon turgescens Mrrr. in Joum. Linn. Soc. Bot. viii, 42 (1865). 



Amblystegium turgescens Lindb. Muse. Scand. 33 (1879). 



Hyfmum aduncutn 8 moUe b turgescens Sanio Besehr. 38 (1885). 



CaHiergon turgescens Kindb. Eur. & N. Amer. Bryin. 84 (1897). 



Dioicous; resembling A. scorpioides, growing in soft yellowish-green 

 or brownish tufts, glossy, 3 — 10 in. long, erect or ascending, simple or with 

 short fasciculate branches. Leaves turgid, imbricated and julaceous, from 

 a rounded non-decurrent base, broadly oblong, obtuse with a short apiculus, 

 very concave, cucullate at apex from the strongly incurved margin, nerve 

 yellowish, \ length of leaf, single or forked ; cells elongated and incrassate 

 at base, 6 — 8 times long as wide, narrower at margin, rectangular at middle, 

 some quadrate and oval at angles. Fruit unknown. 



Hab. — Wet places on moors where lime exists. 

 Ben Lawers {Rev. C. Binstead 1902) ! ! 



AMBLYSTEGIUM FILICINUM. 



Var. S. Whiteheadii Wheldon, Journ. Bot. 1899, p. 15. 



Dull greenish-yellow ; stems tall, slender, erect, caespitose or floating, irregularly 

 branched or slightly pinnate ; paraphyllia few and tomentum nearly absent. Leaves 

 more distant, narrower, less acuminate, not secund but erecto-patent. 

 Hab. — Wet sandy ground. 



Southport, Birkdale, Ainsdale and St. Anne's, Lanes. (Wheldon). Gullane Links, Haddington 

 {Dixon 1897). 



AMBLYSTEGIUM FLUITANS. 



Var. 0. Bobertsise Een. &■ Dixon, Journ. Bot. 1901, p. 275. 



Floating, variegated with yellow, golden-brown and purplish-red, glossy. 

 Stem almost simple, with only a few short distant branches. Leaves rather closely 

 set, erect, spreading very slightly, falcate at points of branches, narrow lanceolate, 



