ToRTULACE^.J 243 [Mollia. 



Var. /8. angustifolia Lindh. in litt. 



Stem more slender, with laxer, more patent, narrower linear leaves. 



Hab. — Cromaglown, Killarney (Lindberg, 1873) ! 1 



This moss is almost exactly intermediate between M. cvispula and bmchy- 

 dontia, and some of the varieties of these species so nearly connect the two, that 

 it is rather difficult to define the present one. The most important character 

 is derived from the form of the leaf, this is short and almost lineal in outline 

 on the main axis, but on the innovations broader towards the point as in 

 some Pottias, the apex ends somewhat as in cvispula, but the nerve does not 

 curve up, but runs straight out in an acute triangular mucro as in flcivo-virens, 

 while the margins do not roll inward, but are plane, in which, as well as in 

 the areolation it agrees best with hmchydoniia. The stem varies greatly in 

 size and branching, lateral innovations being very frequent, the leaves of 

 which on the lower part are very small and distant, suddenly becoming 

 accrescent upward into a coma. 



Prof. Lindberg also sends M. litomlis from Dingle, Howth, and O'SuUivan's 

 cascade, and the male plant from Cromaglown ; the latter is in lax tufts, i inch 

 high, the male infl. minute, gemmiform, in the axils of the comal leaves, the 

 bracts 4 — 5, ovate acuminate, laxly areolate, nerved to apex. 



16. MOLLIA BEACHYDONTIA (Bmck) Lindb. 



Dioicous ; csespitose. Leaves brpadly lanceolate, gradually 

 acuminate, cuspidate with the flat straight excurrent nerve. Caps, 

 ovate, lid conic, rostrate, teeth of peristome very short and irregular. 

 (T. XXXVI, A.) 



Syn. — Trichostomum brachydontium Bruch in Flora xii, P. II, 393, t. j., f. 3 (1829). Lindb. de 

 Tort. 228 (1864). HoBK. Syn. br. m. 60 (1873). 

 Didymodon brachydontius WiLS. in Hook. Br. Fl. ii, 30 (1833), Eng. Bot. Suppl. t. 2735 

 (1834). Mack. Fl. hib. P. II, 18 (1836). 



Trichostomum mutabile Bruch MSS. De Not. Syllab. 192 (1838), Epil. bri. ital. 504 

 (i86g). Br. Sch. Bry. eur. fasc. 18 — 20, Men. 8, t. 5 (1843). Rabenh. Deutsch. kr. 

 fl. ii, S. 3, 114 (1848). C. MuELL. Synops. i, 571 (1849). WiLS. Bry. brit. 112, t. 41 

 (1855). ScHiMP. Synops. 150 (i860), 2 ed. 170. Berk. Handb. br. m. 261 (1863). 

 MiLDE Bry. siles. 103 (i86g). HusN. Mouss. nord-ouest 74 (1873), Muse. gall. 87, 

 t. 25 (1885). JuRATz. Laubm. oesterr.-ung. 103 (1882). 



Tortula brachydontia, Mitt. Journ. Linn. soc. Bot. xii, 148 (1869). 



Mollia brachydontia Lindb. Muse, scand. 21 (1879). 



Dioicous ; densely caespitose, | — 2 in. high, dull yellow-green above, 

 fuscous below. Leaves firm and twisting when dry, erecto-patent when 

 moist, lower minute, upper comant, elongato-lanceolate, acuminate, the 

 nerve flattish, stout, yellowish, excurrent in a flat straight acute point ; 

 margin subundulate, erect, cells at base small, rectangular, pellucid, 

 above very minute, hexagonal, opake. Perich. bracts narrower, linear, 

 longly acuminate ; caps, on a longish slender purple seta, erect, ovate. 



