292 HEPATIC^. 



2. Jungermania pumila, Withering. 



Ju7igernmnia jwniila, Wither. Brit. Fl. p. 866 (1776); Hook. Brit. Jung. t. 17 



(1816). 

 Aplozia pumila, Dum. Hep. Eur. p. 50 (1874). 



Paroicous, csespitose, small olive-green colour. Stem simple 

 or branched, creeping or suberect, no flagella ; radiculose, rootlets 

 thick, frequent; branches lateral-subpostical, arising from the 

 postical side of the leaf- axil, or proceeding from the base of 

 perianth. Leaves succubous, upper imbricate, sheathing com- 

 plicate, concave, erecto-patent or patent, lower alternate, spreading, 

 approximate, obliquely inserted, horizontal or patent-divergent, 

 ovate, oval or oblong-oval ; texture delicate, epidermis smooth ; 

 cells 4-, 5- and 6-sided, quadrate or elongate, walls delicate, com- 

 posed of two bands, no trigones or thickened angles. 'No stipules. 

 Bracts similar to the upper leaves, only larger and swollen at the 

 base, where the antheridia are. No bracteole. Perianth pro- 

 jecting about § beyond the bracts, composed of a single layer of 

 cells, about 120 round the middle, fusiform, acute, mouth very 

 small with few delicate teeth or subentire, upper portion antically 

 obtusely 2-plicate with a narrow fold between the folds. Calyptra 

 extremely delicate. Capsule oval, dark brown, spores pale golden- 

 brown, elaters the same, bispiral, 12 turns of the spiral. Peri- 

 gonial bracts immediately below the perianth, 2 or 3 pairs ; anthe- 

 ridia oval, 1 or 2 at the swollen base. 



Fruits May, June. 



Dimensions. — Stems J to |- inch long, diam. -1 mm, to 15 mm. ; 

 leaves 1* mm. long x '75 mm. broad, '9 mm. x •? mm., -9 mm. x 

 "6 mm,, '8 mm. x '55 mm. ; cells "05 mm. x 02 mm., "04 mm. x 

 *025 mm., '035 mm. x "03 mm., -03 mm. x '03 mm., '03 mm. x 

 •02 mm. ; bracts 1'5 mm. long x 1' mm. broad, 1'5 mm. x "8 mm., 

 1*25 mm. x 75 mm. ; perianth 2*25 ram. long x '6 mm. broad, 

 1"75 mm. X '65 mm. ; pedicel "l mm. thick ; capsule '75 mm. x 

 '5 mm. ; valves '75 mm. x '25 mm. ; spores "025 mm. 



Hab. — Growing on wet rocks and earth by streams. Some- 

 what rare. 



