Jungermannia.} HE PATIOS. 1*25 



ful and very distinct species seems almost wholly confined to the south 

 of Ireland and there only has it been found in fructification. 



73. J. dilatdta, Linn, (dilated Jungermannia); stem creeping 

 irregularly branched, leaves unequally 2-lobed the upper lobes 

 roundish acute the lower ones roundish saccate, stipules round- 

 ish plane emarginate, fruit terminal, perianth obcordate tuber- 

 culated triangular. Linn. Sp. PL p. 1600. Hook. Br. Jung. 

 t. 5. Hobs. Br. Mosses, v. 2. n. 91. Lindenb. Syn. Hepat.p. 17. — 

 Lejeunia, Libert — J. tamariscifolia, Schreb. — E. Bot. t. 1086. — 

 Dill. Muse. t. 72./. 27. 



Trunks of trees ; very frequent. Fr. Winter and Spr. — One of the 

 most general of all Jungermannia?, colouring the trunks of trees with 

 brown spots or blotches. It must be carefully distinguished from the 

 following, which is often confounded with it. 



74. J. Tamar'tsci, Linn. (Tamarisk Jungermannia); stem 

 creeping pinnatedly branched, leaves unequally 2-lobed, the 

 upper lobes ovato-rotundate the lower ones minute obovate 

 saccate, stipules subquadrate emarginate the margins revolute, 

 fruit on short terminal branches, perianth obovate smooth tri- 

 angular. Linn. Sp. PL p. 1600. Hook. Br. Jung. t.6. E. Bot. 

 t. 2480. Hobs. Br. Mosses, v. 2. n. 112. Lindenb. Syn. HepaJt. 

 p. 17.— Dill. Muse. t. 72. /. 31. 



On the ground and creeping over low bushes, especially in subal- 

 pine countries, common. Fr. July, Aug. — Besides the characters above 

 given, this may be distinguished by its longer and more regularly pinnated 

 stems, which grow in large lax tufts. A var. is found by Mr. Wilson on 

 Turk mountain, Ireland, with the larger lobe of the leaf evidently and 

 sharply apiculate, as well as the segments or lobes of the stipules. 



II. Frondose. 

 a. Fronds destitute of nerve. 



75. J.pinguis, Linn, (slippery Jungermannia); frond oblong 

 decumbent nerveless fleshy plane above, beneath tumid irregu- 

 larly branched the margins sinuate fruit from the lower pari 

 near the margin, perianth very short, the mouth dilated fimbri- 

 ated, calyptra exserted oblongo-cylindrical Bmooth. Linn, Sp. 

 PL p. L602. /;. Bot. t. 185. Hook. Br. Jung- t. 46. Lindenb. 

 Syn. Hepai. />. 98. — Metzgeria pingws, Corda. — Dill. Muse* 



t. 7 1. f. 42, C ul. Jig. /i\ S, A.) — i. angUSthri frond elongated 



almost linear simple or bipinnatedly branched. 



Bogs ami water} places.— 0. in pools of water among conferva and 

 other aquatics. Fr. Summer. 



7(>. .1. multijida, Linn, (many-lobed Jungermannia)} frond 

 linear nerveless fleshy compr e ss e d bipinnatifidly branched, fruit 

 marginal, perianth very short, the mouth dilated fimbriated, 

 calyptra exserted oblongo-cylindrical tobercnlated. Linn. Sp. 

 PL r . 1602. /'. / H . /. 45. // 



n. !«»<). Lindenb. ' 



muligidiis. Dicks. -DM, MuSC t ~\.l. I I j frond- 



