86 BRITISH HEPATIC^. 



my pleasui-e to know ; and I well remember, after a long, and fruitless search for 

 S. liitrtlingii, his pardonable exultation when he was the first to meet with it in some 

 abundance. " Requiem seternam dona eis, Domine." 



/S'capHida Bartlingii presents one of those transitional links connecting allied 

 genera which are always interesting to the student of nature. It is the only Scapania 

 (I'xot'jit A rosacea) in which the posterior lobe of the leaf is concave; thus approaching 

 in habit the section of Jungermannia which Dumortier has named Diplophyllwm, some 

 spooios of which, e. g. D. Dicksoni and D. obtusi/olium, it resembles in many respects, 

 but is distinguishable by the compressed colesule. 



From small forms of .S'. cequUoba it may be known by the darker colour and firmer 

 texture of the leaves in that species, which are always tuberculate. 



From S. curta by the smaller size of its lobule, the reflexed inferior lobe and the 

 leaves, which are generally dentate, and scarcely repand. 



The complicate leaves and compressed habit at once enable us to separate it firom 

 Jung, ventrlcosa and its allies. 



In Duniortier's latest work we find Scapania Bartlingii described under three 

 diflerent names : — 



1. S. BarHiiu/ii, Nees (!) — "lobis iequalibus semi-rotundatis subrepandis integris"; 

 2. S. 7-upestris, Dumort. — •' lobis rotundato-ovatis cuspidatis int^errimis '" ; and 3. 

 S. Caresiice, De Not — "breviter bilobis integris, lobo dorsali sabelliptico nndolato, 

 ventrali semi-ovato, colesnla elongata ore integro." 



According to original specimens from the N^eesian herbariiim, generously com- 

 municated by Dr. Gcottsche, it appears doubtful whether .S'. Cartitim, De Xot., difiers 

 materially from the ordinary continental form of 5. Bartlingii. (Compane with G. & E. 

 Hep. Eur. n. 424, 48.3, and the drawing attached to n. 392. from Fnnck's Carin- 

 thian specimens.) Gottsche's fignre represents the colesuliferous shoot, but in the 

 tuft sent me from the same locality, which is barren, the leaves are all acute and 

 cuspidate. Oor British specimens agree with Dumortier s 5. nipeMris, having decidedly 

 cuspidate lobes ; but even in tbem we generally find the terminal leaves obtuse. 



Pl. IX. Fig. 27. — Scapania Babtuxgii. 1. Shoot trntural size. 2. Ap&c of 

 barren shoot x 16. 3, 4. Stem-leaves. 5. Leaf from ventral aspect. 6. Colesule. 7. 

 Portion of leaf showing the dotted cells. 



5. Scapania ctjeta, I>umort. 



Pl. VII. Fig. 23. 



Shoots minute, ascending, simple or innovant-fasciculate ; leaves 

 distichous, approximate, cleft for half their length into two unequal 

 lobes ; inferior lobe obliquely obovate, apiculate, nearly plane ; lobule 

 much smaller, sub-quadrate, acute, erecto-patent ; margins entire or 

 sub-dentate; colesule half immersed, ovate, compressed, sub-plicate, 

 apex truncate, inciso-dentate. 



Jungermannia nemorosa, Z denudata. Hook. Brit. Jung. t. xxi. ff. 17-19 (1814). 



Jungermannia cwrta. Mart. Fl. Cryp. Erlang. p. 148, t. iv. f. 24 (excl. syn.) 

 (1817) i Spreg. Syst. Veg. iv. p. 227 ; Lindenb. Syn. Hep. p. 56, n. 52 (1829); Ekart, 

 Syn. Jung. p. 27, t. xi. f. 89, mala (1832); lluben. Hep. Germ. p. 244 (1834); Nees 

 ab E. Leberm. Eur. i. p. 214 (1833). 



