ToRTULACE^.] 219 [Tortula. 



Dioicous ; laxly tufted, i — 2 in. high, bright green above, dull 

 green below, dirty fuscous at base, fastigiate branched, with red radicles 

 and persistent nerves of decayed leaves at lower part. Leaves crowded 

 and erecto-patent above, twisted when dry, elongato-lingulate, mucro- 

 nate with the stout semi-terete nerve, concave, margin lightly recurved, 

 suddenly incrassate, except at the hyaline base, densely and minutely 

 papillose above ; cells at base lax, hexagono-rectang. hyaline, median 

 oblongo-hexag. chlorophyllose, apical minute, subpunctiform, rounded 

 hexag. Perich. bracts with a thinner nerve, narrower, not recurved, 

 the margin scarcely incrassate ; caps, on a stout yellow seta, lepto- 

 dermous, erect, elongated, cylindraceous, slightly incurved, pale fuscous, 

 calyptra large brownish, lid orange, conical with a blunt oblique beak, 

 falling with the columella, annulus none; teeth on a narrow basal 

 membrane, clathrato-conjoined at base, once twisted, orange red, 

 fugacious. 



Male plants intermixed with female, infl. terminal, gemmaceous, 



outer bracts ovato-lanc, inner broadly ovato-acuminate. 



Hab. — At roots of old trees by rivers, not common. Fr. 5. 



Near the Mole at Beeching wood, Mickleham (Borrer) ! ! Llanffinnan, Anglesey [Wilson 

 1828) ! Stapleton, Bristol {Tkwaites 1843) ! ! Hurstpierpoint {Mitten) ! Great Bard- 

 field, Essex (Borrer 1844) ! Tyffry, Anglesey {Hunt 1858) ! Eggleston bridge, Tees- 

 dale (Sprzice 1845) ' Willenhall cemetery (Kirk 1863) ! Brighton (Davics i858) ! ! 

 Plymouth {Holmes 1868) ! ! Banks of the Alne, Wootton {Bagnall 1873) ! ! Sherborne, 

 and by the Monnow and Wye, Monmouth (Boswell iSyj) ! ! Menmuir and Caterthun, 

 Forfar {Anderson). Kinnordy {Fergusson). Houghton, Northampton {Dixon) ! ! 

 GlanviUes Wootton, Dorset {Rev. H. Wood 1880) ! ! 



Although long united to Cinclidotus riparius, that moss differs from the 

 present by its cladocarpous fruit, its lurid blackish colour, the leaves straight 

 and appressed when dry, with plane margins and more slender nerve lost in 

 the apex, the basal cells quadrate, incrassate, the upper rounded, 4 — 6 angled 

 and quite smooth. 



Neat specimens of this moss are difficult to meet with, as its close 

 vicinity to streams renders it liable to receive deposits of mud, and the soft 

 laminae of the leaves are easily abraded. 



Sect. 2. ZYGOTRICHIA {Bfid.). Stems short; leaves spathulate, 

 green, pointed with the excurrent nerve. Peristome combined at lower part 

 into a long tube, spirally tessellated. 



14. TORTULA SUBULATA (L.) Hedw. 



Autoicous ; leaves spathulate-oblong, rosaceous, entire, with a 

 yellowish border, nerve excurrent in a mucro. Caps, very long, 

 cylindric, slightly curved, the tube of per. obliquely tessellated. 

 (T. XXXII., B.) 



Syn. — Muscus trichoides minor, capitulis longissimis Doody. Ray. Syn. Stirp. br. 243 (i6go). 

 Mtiscus cafillaris corniculis longissimis incurvis Ray Syn. 2 ed. 29 (1696). 



