2 BUITISH HEPATIC^. 



form of the capsule, and tie attachment of the elaters to the apex of the valves, and the 

 apparent irregularity of the latter (for, as observed by Mr. Lyell, they "frequently appear 

 as but two, their tips being held together by the elastic filaments, which turn upwards, 

 and -form a tuft on the open capsule "), we trace a resemblance to Anev/ra and Mitzgeria. 

 These affinities did not escape Sir W. Hooker, who, in his classical "work on British 

 Jungermannise (t. 54), remarks : " In the form of the capsule, and the situation of 

 the spiral filaments, there is a close analogy with J. pinguis and multifida, between 

 which and the Jungermannia foUosce, J, Hookeri may be considered as holding the 

 middle rank." 



1. ScALius HooKEUij Gr. Sf B. 



Pl. I. Pig. 1. 



Jimgermannia, Lyell, in Eng. Bot. t. 2555, 2 ed. 1808 ; Hook. Br. Jung. t. 54 ; 

 Brit. Flor. v. i. p. 107, n. 1. 



Hab. Heaths and damp places. Very local. Discovered by C. Lyell, Esq., near 

 the private road from Cadnam to Poultons, in the New Forest, Dec. 21, 1812 ! * and 

 Kinnordy, Aug. 1813 ! Barnaby Moor, near York, B. Spruce, Nov. 1842 ! Chyan- 

 haU Moor, Penzance, W. Curnow, Aug. 1844 ! Fruit, summer. 



Fronds creeping at the base ; rhizomatous shoots fleshy, diva- 

 ricate, destitute of capillary rootlets. Dr. Gottsche, in his exhaustive 

 monograph de Haplomitrio, appears to- consider these the true 

 roots ; but they differ in no respect from the subterranean stolons 

 of other species, except in the absence of flbrillse. Professor 

 Hofmeister (Higher Oryptogamia, p. 64-5, t, vii. f. 1-2 — Ray Soc.) 

 states that the growing end of these shoots coincides with that of 

 the end of the stem : " They grow by continually-repeated division 

 of a single apical cell by means of septa alternately inclined in 

 different directions. These shoots are also remarkable from the 

 fact that in the older portion of them each epidermal cell grows out 

 into a short papilla, which may serve as a compensation for the 

 absence of rootlets." 



Stems erect, 1 to 6 lines long, simple, or occasionally furcate, 

 thick and succulent. 



ieawe* pale-green, distant, laxly imbricated, subtrifarious, vari- 

 able in outline, near the base of the stem smaller and roundish- 

 ovate ; upper ones ovate-oblong, or Ungulate, obtuse, repand, or 

 distantly lobed and dentate, sometimes entire, patent, obliquely 

 decurrent at the base (PI. 1. 1. i. f. 2-3). Sir W. Hooker observes 

 " that near the extremity of a leaf two opposite lateral notches are 

 frequently seen, which thus form a large terminal lobe ; and that, 

 in other leaves, are formed smaller lobes or projections, as well 

 acute as obtuse, which give the margins a very jagged appearance." 

 In connection with this fact, Dr. Gottsche remarks that " the leaf, 



* The mark (!) after stations indicates that I have examined specimens from the 

 places indicated. 



