44 BRITISH HEPATIC^. 



Capsule (f. 33, 6) oval, dark brown, dividing into four valves. 



Tedicel stout, fleshy, white, 2 to 4 lines long, bulbous at the 

 base, and inserted into the thickened gibbous portion of the invo- 

 lucre. Kespecting this. Dr. Gottscjie observes (Syn. Hep. p. 6) : 

 " Pedunculus in fundo hujus bursse eodem modo insertus apparet, 

 quo pedunculus Aneurce, scilicet bulbulo quodam radicali sursum 

 nonnihil constricto." 



Spores reddish-brown, minutely granular, from ttVo " ^'^ sio" 

 in diameter. 



Maters obscurely bi-spiral, xio' lo'ig ^7 35^00 " broad. 



Male inflorescence autoicous. Ferigonial leaves 2 or 3 in num- 

 ber, terminal, sub-complicate and saccate at the base, enclosing 

 one or more oval shortly stipitate antheridia. 



An excellent account of the evolution ot Acroholbus will be found in Syn. Hep., 

 p. 6, communicated by Dr. Gottsche, from wbich the following paragraph is taken : — 



" In fere perfectis denique speciminibus, quorum capsula semina quaterna cohse- 

 rentia et elateres bispiros exhibebat, pistilla sterilia et sicca semper inter folia involu- 

 cralia vidi mixta lobulis phylloideis, quo coUigitur, superiorem partem floris, foliis 

 involucralibus interjectam, in pristino statu situque persistere, ilium vero, quae 

 foliis dictis subjecta est, sacculi seu bulbi forma in solum descenders radiculisque 

 conspergi. 



" Deest igitur perianthium non aliter atque in Aneura, testibus relictis pistUlis 

 abortivis in vertice inter folia involu.cri." 



Pl. X. Pig. 33. — : Acrobolbus Wilsoni. 1. Stems immagnified. .2. Lower 

 portion of stern x 16 diam. 3. Upper portion 0/ fertile shoot, showing involucral 

 leaves x 16. 4. Fertile shoot, lateral view. 5. Apex of leafy. 120. 6, 7. Involucre 

 laid open, showing the calyplra and capsule. 8. Leaves and amphigastria from apex 

 of barren shoot. 



VI. Saccogtna, Dumart. 



Jungermannia, L. Sp. PI. I. ed. ii. p. 1131, n. 2 (1753). 



Lippius (baud L.), Gr. & B. Nat. Arr. Brit. PI. V. i. p. 706 (1821). 



Saccogyna, Dum. Com. Bot. p. 113 (1822) ; Syll. Jung. Eur. p. 74, n. xiii. (1831); 

 Obs. sur les Jung. p. 21 (1835). 



Syhorea, Corda, in Opiz. Beitr. i. p. 653, n. 7 (1829), et Sturm. Deutsch. Fl. ii. 

 fasc. 19 et 20, p. 41 (1830). 



Lophocolea, Mart. PI. Cell. Ins. Cunar. p. 50 (1840). 



(Jalypogeia, Raddi, MSS. ex auct. Cord. 



Geocalyx, N. ab E. Leberm. Eur. i. p. 97, n. 13 (1833). 



Obs.— Genus Verbenacearum tamen lAppia, L. Syst. Nat. i. ed. (1735). 



Dioicous. Perigynium (torus) at first bud-like, inferior, pro- 

 ceeding from the axil of an amphigastrium, at length oblong, 

 pendulous, fleshy, sub-lateral, shortly stipitate, surmounted by the 

 remains of the involucral bracts. Colesule wanting. Calyptra con- 

 nate for most of its length with the outer walls, the dome-like apex 

 alone free. Capsule oblong, valves 4, straight, erect. 



Male spikes minute, inferior, arising from the amphigastria of 

 separate individuals. 



