56 HEPATIC^E. [Jungermannia. 



tion having been made by Dr. Hooker. The var. 7. furciycra of his 

 J. epipTiylla Brit. Jung. t. 47, is a state of our plant as it buds in au- 

 tumn : he says, " those curious processes are in all probability destined 

 by nature as a means of increasing the species, different from any that 

 has been noticed in any other Jungermanniae." We may now add, 

 and quite different from the annual buds of J. epiphylla. By the fol- 

 lowing marks the two species may be clearly distinguished. In ./. caly- 

 cina the fronds are concave, their edges raised, their midrib broad and 

 well marked : the calyx large, tumid, subplicate, the catyptra remain- 

 ing in the calyx, whereas in J. epiphylla it is always much exserted ; 

 the spiral filaments are bent, not twisted as in the latter ; the seeds 

 are longer. The male flowers are very like in the two species, but are 

 fewer and more scattered in J. calycina. The capsules before dehi- 

 scence are of a light green colour, and after dissemination the valves 

 are paler than in J. epiphylla. The immature seeds show a ternate 

 aggregation. This species often assumes a glaucous-blueish appearance 

 when it grows where water trickles, and never exhibits a brownish-pur- 

 ple tinge over the midrib as does J. epiphylla. 



2. J. epiphylla, LINN. Frond oblong, rather broadly lobed 

 and sinuated, fruit from the upper side of the frond and near 

 the apex ; calyx at first procumbent, anteriorly its cavity formed 

 of the frond, its mouth inciso-dentate ; the calyptra exserted. 

 Linn. sp. pL p. 1602. Hook. Br. Jung, t, 47, varieties a and (3. 



On wet banks, common. Hollow subulate slightly curved, pale bo- 

 dies are sometimes found rising from the surface of the frond asinJww^. 

 JBlasia, but I could never find any contents. The bud appears as a 

 minute scale between the lobes at the top of the sinus, and afterwards 

 expands into a lobed frond, and so the species is prolonged. 



3. J. Blasia, HOOK. Frond oblong, dichotomous, nerved, 

 with scattered dentate scales beneath ; the fruit arising from the 

 upper surface over the nerve, calyptra scarcely exserted. Hook. 

 Brit. Jung. t. 82, 83, 84. 



On sandy banks occasionally inundated ; rather rare. Fruit at Castle 

 Kelly Mountain, on the banks *of the stream, in March. 



4. J. furcata, LINN. Frond linear, dichotomous, nerved, 

 glabrous above, beneath and on the margin subpilose, fruit from 

 the midrib on the under side ; calyx 2-lobed, the margin ci- 

 liated ; calyptra obovate, hispid. Linn, sp.pl. p. 1602. Hook. 

 Br. Jung. t. 55, 56. 



On trunks of trees, also loosely casspitose on banks in woods ; 

 common. 



5. J. pubescens, SCHRANK. Frond linear, subdichotomous, 

 nerved, pubescent on both sides ; calyces at the extremities of 

 short lateral branches, cylindraceo-obovate, pubescent ; capsule 

 cylindraceous, bivalved at the top. Schrank. prim. jl. Salisb. 

 p. 231, Hook. Br. Jung. t. 73. 



On mountains near Belfast, Mr. Templeton I have never seen this 

 plant in Ireland, and give it on the authority of a small specimen from 

 Mr. Templeton. The fruit, hitherto unknown, occurs on plants I have 

 from Mr. Dickson, who gave as his authority, Mr. Menzies and Cape 



