50 BRITISH HEPATIC^. 



side near the base." Texture not differing from that of the 

 leaves. 



Inflorescence dioicous. Fertile receptacle resembling at first a 

 minute bud, almost hidden by the amphigastria, afterwards, from 

 the growth of the colesule, curving upwards, and apparently lateral. 



Involucral bracts two (f 52, 8); the upper one adnate at the 

 base with the colesule, 2-3-fid (f. 62, 4), the segments acute, con- 

 nivent, distantly and sharply dentate ; connate with these on the 

 ventral aspect we find an irregularly trifid-toothed bracteole. 



One or rarely two minute sub-involucral bracts are generally 

 present at the base of the shoot. 



Colesule (f. 52, 8) at first ovate, contracted at the mouth, but 

 after the maturity of the capsule obovate, terete, obscurely 3-4-. 

 plicate, from a contracted thickened base, so as to appear apo- 

 physate. Apex slightly crenate, splitting on one side at the exit 

 of the capsule. 



Calyptra (f. 52, 7) connate (except at the campanulate apex) 

 with the lower half of the colesule ; the combined walls thickened, 

 and composed of 4-8 layers of cells. 



Capsule oval, deep-brown, splitting into four eq^ual elliptic 

 valves. 



JPedtmcle ^" to i" long, white, succulent. 



Spores small, spherical, tfSo "» rufous-brown. 



Maters bi-spiral, -^" in length, by -rsW broad. 



Male plants distinct, densely csespitose; shoots more slender, 

 generally simple ; leaves closely imbricated, sub-secund. 



Perigonial leaves (f. 52, 5) terminal, elliptic-ovate, acutely 

 notched, ventricose, enclosing one or two spherical, olive-green 

 shortly stipitate antheridia. 



Pl. XVII. Fig. 62. — Han^amthas scutatus. 1. Fronds unmagnified. 2. Portion 

 of bwrren shoat x 8. 3. Stem-leaves cmd anyphigastria seen fromhehw x 16. 4. Afm 

 of involucral bract, showing the cells x 120. 5. Perigonial leaf containing antheridia. 

 6. Fertile receptacle and capsule x 8. 7. Transverse section of colesule, showing the 

 adnate calyptrq, a/nd young capsule. 8. Mature colesule (ventral aspect). 



Seption III.— Jtmgermannidse. 



Colesule and calyptra free. Capsule solid, dividing to the 

 base into four valves. Fructification terminal on primary or 

 secondary shoots, or sublateral from short proper ventral shoots 

 (amphigastriate). 



VIII. PxAGiocHiLA, Dumori. 



Jwngermarvnia, L. 8p. pl. i. ed. ii. p. 1131, n. 1 (1753). 

 Bimckleria, Neoker, Elem. Bot. iii. p. 337, n. 1754 (ex parte) ? 1790. 

 Candollea, Raddi iq Mem. Soc. Moden. xviii. p. 23, sect. A* (1820). 

 Ma/rtinellia, G. & B. emend, in Nat. Arr, Br. pl. i. 690, ex parte (1821). 



