24 BKITISH HEPATIC^.. 



Jung, scalaris, Sbhrad. Cryp. Ge-w. ii. p. 4 (1796) ; N. ab E. Leber. Eur. i. p. 281 

 (1833). 



J. lanceolata, Bng. Bot. t. 605. 



a major. Stems incrassated, naked, for the most part erect; 

 leaves more distant, less convex, patent, and often recurved at the 

 apex; involucral leaves emarginate; amphigastria distinct, tri- 

 angular-subulate, entire. Deep green, sometimes red or purplish, 

 generally fertile. 



J. scalaris, Hook. Brit. Jung. t. 61 j Lindenb. Hep. Eur. p. 27 ; El. Brit v i 

 p. 116, n. 43. 



a mqj<yr, N. ab E. 1. cit. i. p. 281 (1835) ; G. & R. Hep. Eur. Ex. n. 106, 362. 



Nwrdius, Gray & Bennett, Nat. Arr. i. p. 694, n. 1 (1821). 



MesophyUa, Dum. Com. Bot. p.- 112 (1823). 



Alwularia, Corda, in Sturm. Fl. Cryp. xix. p. 32, t. 8 (1829) ; G. L. & N. Syn 

 Hep. Eur. p. 10 ; Dum. Syll. p. 29, n. 115. 



a* distans. Stems elongated ; leaves distant, more convex, 

 erecto-patent, ventricose, sordid green, shrinking when dry. 



3 rigidula. Shoots rigid, creeping, subterete ; leaves roundish- 

 ovate, closely imbricated, semi-vertical ; male stems terete, sub- 

 spicate ; amphigastria frequent, subulate ; involucre half-immersed ; 

 olive-green, brown, or purple. 



Alie. scalaris, a** rigidula, (i. & E,. Hep. Eur. Ex. 223, c. icon. ; N. ab E. 1. cit. 

 ii. p. 449. 



Alic. rufescens, Dum. Syll. n. 116. 



J. subapiealis, Hiiben. Hep. Germ. p. 83 (excl. syn. prseter lindenb.). 



3* rigens. Shoots erect, gracile, interrupted, two or three times 

 innovant from the upper amphigastria ; leaves appressed, scalate, 

 imbricated, entire ; amphigastria frequent, subulate. 



N. ab E. 1. cit. ii. p. 281. 



7 compressa. Stems short, erect, rigid ; leaves orbiculate, 

 plane, near the apex more crowded and compressed ; amphigastria 

 broadly subulate, patent ; involucral bracts larger, entire, conni- 

 vent, pale-green. 



Jung. Walrothia/na, Hiiben. 1. c. p. 85. 



Hab. One of our commonest species, growing on shady banks, rocks, or in wet 

 places, from the searlevel to the summits of our highest mountains. Fruit, spring and 

 autumn. 



Like the majority of species with a creeping habit, Nardia scalaris forms exten- 

 sive tufts, either creeping and depressed, or more crowded and ascending. Its appear- 

 ance varies much according to locality. From the banks of the Findhorn, Mr. Oroall 

 has sent me specimens which almost attain the proportions of JV. compressa; submerged 

 specimens are more slender, and their leaves distant and smaller ; whilst on dry moora 

 and rocks the habit is rigid and creeping, and the colour tinged with brown or purple. 

 On the higher mountains y compressa is met with, with fewer rigid, appressed leaves, 

 and compressed shoots, the colour very pale olive, and almo.st destitute of chlorophyll 



