BRITISH HEPATIC^. 47 



Oapmle{t 28, 6) oblong, reddish-brown, cleft into four narrow, 

 patent, straight, coriaceous valves. 



Pe(?*ce? about an inch long, white, parenchymatous, bulbous at 

 the base, where it is inserted into the walls of the sac- 



Spores minute, reddish-brown, round, ttW" in diameter. 



Blaters slender, bi-spiral, y|/ by -^^^' . 



" Inflorescentia mascuUna in ramulis propriis microphyllis ex 

 amphigastriorum angulo nascentibus." Syn. Hep. p. 194. 



I have not yet met with the male plant ; but probably the antlie- 

 ridia are contained in minute spikes arising from the amphigastria, 

 as in Kantia trichomanis. 



Oes. — Althougli S. vitioulosa was accurately figured by Michelius, the species 

 seems to have been confounded by most of the early -writers' with Ghil. polyanthos. 

 The figure of Dillenms (Hist. Muse. Ixix. 7, A. & B.) clearly belongs to the latter. 



Hooker (1. c. t. Ix.) observes ; "As Linnmus refers to the Michelian figure, there 

 is reason to believe he intended the same plant ; yet, how strange it is that he should 

 have described it in Sp. Plant, 'foliolis suhulatis,' and in Syst. Natures 'foliis planis 

 nvdis linea/ribus' " 



Miss Hutchi/ns was the first to discover perfect fructification, .although Mr. C. Lyell 

 had already found young perigynia. 



Saccogyna appears to be exceedingly rare on the Continent, since in G. & K. Hep. 

 Eur; Ex. the only specimen met with was communicated by Mr. Curnow, of Penzance. 



Pi. IX. Fig. 28. — Saccogyyia vitioulosa. 1. Fertile slwot natwral size. 2. Portion 

 of shoot X 8. 3. 'Leaves and amphigastria more highly magnified (the drawing was 

 intended to represent the young fructification, hut is imperfectly engraved). 4, 5. Amphi- 

 gastria. 6. Perigynium, lower part laid open to show the adnate calyptra and insertion 

 of the pedicel. 



VII. Habpanthus, N. ab E. 



Jungermannia, Web. & Mohr. Bot. Taschenb. p. 408, n. 10 (1807); N. ab E. in 

 Regensb. Bot. Zeit. xvi. P. II. p. 408 (1833). 



Earpanthus, N. ab E. Leberm. Eur. ii. p. 351, n. vii. (1836) ; Spruce, Muse, et 

 Hep. Pyren. in Trans. Ed. Bot. S. iii. p. 209 (1859). 



PUwranihe, Tayl. in Hook. Lond. Journ. Bot. v. p. 282 (1846). 



Obs. — Est Pleuranthe, Salisb. MSS. Protese, L. species. Pleuranthus, Rich. MSB. 

 tamen DuHchium, Rich, in Pers. Syn. PI. I. p. 65 (1805). 



Dioicous. ^Fertile shoots very short, ventral (issuing from the 

 axils of amphigastria), at length sub-lateral. Colesule exserted, 

 terete, the lower half incrassate ; mouth contracted, 3-4 dentate. 

 Calyptra fleshy, confluent for two-thirds of its length with the 

 walls of the colesule. Involucral leaves consisting of one or two 

 pairs, with interposed amphigastria. Leaves succubous, ovate, 

 emarginate, semi-vertically imbricated, secund. Amphigastria 

 lanceolate, connate with the adjacent leaves, free margin reflexed, 

 uni-dentate at the base. Male shoots more slender; perigonial 

 leaves terminal, more concave, enclosing 1-2 oval antheridia. 



Plants of small size, csespitose, the stems decumbent, and root- 



