TORTULACE^.] 267 [Barbula. 



Trichostomum rigidulum (non HEDW.) SM. Fl. brit. 1238 (1804), En g- Bot- t. 2178. TURN. 



Muse. hib. 34 (1804). BR. SCHIMP. Bry. eur. fasc. 18-20, p. 10, t. 7 (1843). C. MUELL. 



Synops. i, 570 (1849). WILS. Bry. brit. 114, t. 20 (1855). SCHIMP. Synops. 148 (1860). 



HUSN. Mouss. nord-ouest 73 (1873), Muse. gall. 85, t. 24 (1885). 

 Barbula spadicea MITT, in SEEM. Journ. Bot. 1867, p. 326. 

 Barbula insidiosa JUR. MILDE Hedwigia 1869, p. 97. MILDE Bry. siles. 120 (1869). 



JURATZ. Laubm. oesterr.-ung. in (1882). 

 Barbula rigidula SCHIMP. Synops. 2 ed. 206 (1876). 



Tortula spadicea BRAITHW. in SEEM. Journ. Bot. 1871, p. 293, t. 119, f. 6. HOBK. Syn. 

 br. m. 69 (1873). 



Dioicous ; resembling B.fallax, but more robust, in looser thicker 

 tufts, dull brownish-green above, fuscous below. Stems i 2 in. high, 

 simple or branched ; leaves when dry incurved and imbricated, when 

 wet patent from the base, spreading and recurved, from a broadly ovate 

 base, elongato-lanceoiate, channelled, margin recurved in the lower 

 half, the folds more distinct, nerve strong, distinct to the apex ; cells 

 incrassate and rounded-quadrate from the base, only the lowest elongate- 

 oval, obscure above, papillose. Perich. bracts lanceolate, recurved, 

 from a longish lax-celled base, seta red, caps, erect, cylindric, slightly 

 curved, castaneous with a red mouth, annulus of 3 5 rows of small 

 cells, lid shortly rostrate, nearly half length of caps., peristome short, 

 teeth red on a very short orange basal membrane, scarcely twisted. Male 

 plant more slender, infl. terminal, bracts broad, suddenly acuminate. 



HAB. Damp walls, earth covered rocks and sandy banks of rivers ; not 

 uncommon. Fr. 9 n. 



Forfar (Croall 1852)!! Sheddon Clough, Burnley (Nowell) \ ! Buxton (Wilson 1863)!! 

 Bolton Abbey (Hunt 1868) ! ! Haselden gill (Nowell 1866). Dent (Barnes 1872) ! ! 

 Dovedale (Holmes 1875)!! Castleton (Holt 1885)!! Glen Prosen (Fergusson 1868)! ! 

 Crathie (Sim 1872) ! Belfast (Stewart 1877). Newcastle, Co. Down, Fairhead, Antrim 

 (Rev. H. W. Lett 1884) ' ' Eskdale, Yorks. (Boswell 1878). Bearley, Warwick 

 (B agnail). 



Readily known from B. rigidula by the broader-pointed leaves, with thick 

 nerve vanishing just below apex, and very different basal areolation, and 

 from B. fallax by the longer leaves with opake rather obtuse points and short 

 non-spiral peristome. 



8. BAKBULA RIGIDULA (Hedw.) Mitt. 



Dioicous ; densely tufted, dingy green. Leaves subrecurved, longly 

 lanceolate from an erect base, nerve ending in the thick obscure point, 

 margin revolute below, basal cells narrowly rectangular. Caps, oval- 

 oblong, lid obliquely beaked. (T. XL, B.) 



SYN. Muscus trichodes parvus, foliis musci vulgaris, capitulis longis acutis DOODY. RAY 



Synops. st. br. 243 (1690). 

 Muscus Adiantum aureum dictus assurgens, foliolis tenuissimis, capitulis parvis erectis in 



oblongis pedicellis RAY Syn. 2 ed. 31 (1696). 

 Bryum perangustis foliis et cauliculis, foliis crebrioribus et circa extremitates magis 



conge stis, capitulis erectis, ad summitatem magis egredientibus DILL. Cat. Giss. 225 (1719). 



RAY Syn. 3 ed. 99 (1724). 



