SCAPANIA. 217 



Stabler). 11. Ditto, explanate (ditto). 12. Perianth x 11 

 (Sweden, Kindberg). 13. Portion of mouth of perianth x 85 

 (Yewbarrow, G. Stabler). 



6. Scapania resupinata (Z.), Dnm. 



Lichenastrum auricidatum, jnmudis rotmuUs, afispv/tn, Dill. Hist. Muse. p. 491, 



t. 71, f. 11) (1741). 

 Jtmgermania resnjmiata, Linn. Sp. pi. 1599, fide Dillenii (1753); Huds. Fl. 



Ang. p. 512 (1798); With. Arr. Br. pi. 3, ed. Ill, p. 875 (179G); Eng. 



Bot. t. 2437. 

 Radula dentata, Duin. Syll. Jung. p. 40 (1831). 

 Scapania dentata, Dum. Recueil, p. 14 (183r»). 

 Scapania resujmiata^ Dum. Recueil, p. 14 (1N35). 

 Martinellia gracilis, Lindb. Manip. Muse. Secund. p. 305 (1874). 



Dioicous, growing in dense tufts of a yellowish-brown or 

 olive colour, pale below, closely entangled with long hyaline root- 

 lets, which are produced from the underside of the stem. Stem 

 ligneous, simple or sparingly branched. Leaves crowded at the 

 apex, equal in size, from about J to the J bifid, closely condupli- 

 cate, antical lobe crossing the stem, appressed, somewhat erecto- 

 patent, convex, yet upper margin frequently reflexed, obliquely 

 reniform-rotund, apex rotundate-obtuse, with distant large teeth, 

 teeth broad at the base, the apical ones generally the largest, 

 postical lobe about twice as large, very convex, upper margin 

 remarkably reflexed and decurrent, obliquely oval-obovate, 

 rotundato-obtuse, dentato-serrate, apical teeth scarcely larger ; 

 epidermis smooth, cells small, quadrato-rotund or quadrate, angles 

 thickened, walls firm. Bracts a little larger than the leaves, 

 antical lobe proportionately larger. Perianth prominent, obconical, 

 piano-compressed, mouth often decurved, truncate, wide, inciso- 

 dentate, usually with about 6 segments, finely dentate, capsule 

 oval, projecting a little. Perigonial spikes usually terminal, 

 bracts closely imbricate, lobes almost equal, ventricose at the base, 

 antheridia oval. Upper leaves often gemmiparous, gemmae oval, 

 usually biseptate. 



Var. minor. Small, rarely more than ^- in. long, more delicate 

 than the ordinary form, and although it is very constant in size 



