RECENT ADDITIONS TO OUK JIOSS FLORA. 291 



recurved in the niidille, upper cells liexagoiial, very luiiiutelv papillose, 

 lower oblong-, pellucid. Autheridia as in last ; seta short, calyptrn smooth, 

 cajjsulc obloufi', lid rostrate. Crevices of slate rocks. Plymouth, Holmes. 

 11. P. Heimii, Hed. 13. P. bryoidts (Dicks.). 13. P. lanceoluta, 

 Hed. 



14. P. intermedia, Turn. — Gymno'it. iuterinediian. Turn. Muse. Hib. 

 p. 7. t. 1. f. a-c. — Plants larger than those of P. trioicatida, and resem- 

 bling P. lanceolata ; leaves with the margin revolute for the lower half, 

 capsule subcylindric, sliglitly contracted below the mouth ; annulus com- 

 pound, peristome rudimentary. Not uncommon in south of England, 

 and very different from P. trimcatula. Mr. Mitten unites it to P. lanceo- 

 lata. 



15. P. latifolla, Schw., C. Miill. 



Tr]choj:tomum. — 1, T. ccrn/uim , '[In&h. ; 2, T. cylludricuM, Bruch ; 

 3, T. ridjellum, Hoft". ; 4, T. liiriduni, Hsch. ; 5, T. tojjJtaceurn, Brid. ; 

 6, T. bracJiydoutium, Bruch, 1S29 {T. mutabile, Bruch, 1838); 7, T. 

 crisp/d/tm, l^ruch. 



8. T. flavo-virens, Bruch and Muell. (Tleg. Bot. Zeit. 1829). Dioi- 

 cous, laxly tufted, dichotoiuous, the innovations originating at the fertile 

 coma, soft yellow-green. Leaves laxly imbricated, erecto-pateut, twisting, 

 straight when moist, coraal from an oblong base, longly linear-lanceolate, 

 the margin strongly undulate, nerve thick, yellowish, smooth at back, 

 prolonged into a short acute point. Cells at base very thin, elongated, 

 above minute, hexagonal, very finely papillose, the margin above base 

 bordered with very thin pellucid cells. Capsule on a long purple pedicel, 

 erect, ovato-cylindric, pale, exannulate ; lid conic, obliquely rostrate; 

 teeth straight deep purple, roughish — Hab. Shoreham Beach, Mitten ; 

 Plymouth, Holmes ; Malahide, Dr. Moore ; all barren. 



9. T. litlorale. Mitten (Seem. Journ. Bot. VI. (18C8) p. 99). In com- 

 pact tufts, simple or divided by innovations. Leaves comose, yellowish 

 green, fuscous when old, erecto-pateut, slightly recurved towards a|)ex, 

 oblong ligulate, obtuse, channelled, nerve exeurrent in a short mucro ; 

 cells at base hyaline, oblong and rectangular for as high as half width of 

 leaf, but not ascending up the margin, above shorter, rounded and 

 obscure. 8outh Coast : Plymouth (Holmes); Hastings (Mitten), Brighton 

 (Da vies). 



Tortula. 



Sect. 1. Aloidella. 



1. T. 4/eZ/«/ff, Schreber, 1771.— T. rigida, Hed. 1787. 2. T. ambUjua, 

 B. and S. 3. T. alo'ides, Koch. 



Sect. 2. CuneifoUa. 



4. T. lamellata, Lindberg. — Pottia cavifolia, 8. barbnlo'iJes, Duricu. 

 Potlia yraciliH, Boswell. P. cavifolia, var. gi'acilis, Bry. Brit. Barbula 

 cavifolia, Sclip. Muse. Eur. Novi fasc. 3 and 4. B. concava, Schp. — 

 Monoicous, in loose incoherent tufts. Stems short, simple ; lower leaves 

 smaller; roundish-oval, pilifcrous, upper broadly oval and spathulate, 

 pointed, pericha'tial narrowly spathulate and pilifcrous; all very concave, 

 with the margin flat, pa])illose on the back, nerve vanishing with the 

 apex, ixaring four decurrenl lamellaj ; cells at base elongated hexagonal, 

 hvaline, above minutely (puidrate and chloro])hvllose. Seta3 longish; 



u 2 



