HEPATIC. (LIVERWORTS.) 83 
M4 ANEURA Frond without a midrib, bearing the fruit underneath near the margin. 
15. STEETZLA. Frond with idrib, bearing the frui its upper sid 
16. PELLIA. Frond without a definite midrib. Fruit dorsal. 
17. BLASIA. Frond ring the frui it 
+h nee eee 
> J - 
Il. Vegetation foliaceons (leaves and stem distinct). 
* Leaves succubous, i e. the apex of each leaf lying under the base of the succeeding teal 
Amphigastria present (except in No. 18). 
18. FOSSOMBRONIA. Perianth campanniate ; its mouth wide, undu 
19. GEOUALYX. Perianth none: involucre fleshy, becoming subterran 
‘ rranean. 
20 CHILOSCYPHUS. Perianth obovate, 2 - . Calyptra chartaceous. 
janth fusiform, concrete 2 the calyptra. 
22. LOPHO A. Perianth 3-lo triangular ; — crest tothe 
28. SPHAGN(ECETIS. Perianth triangular at 
2 N NIA lar; its mouth cane denticulate 
+ + Amphigastria absent 
25. SCAPANIA. Perianth compressed 1 to the stem. truncate. Leaves 2-lobed. 
26. P rianth compressed contrary to the stem. Leaves not 2-lobed. 
co! 
27. paral de Perianth and involucre united Leaves 2-lobed. 
28. GYMNOMITRI Perianth wanting. Leaves 2-lebed. 
+ eric tn perf Jeaf lying on the base of the succeeding leaf Am 
ria present Adal in No. 32). 
Leaves seats ta bed. 
29. FRULLANIA. Perianth keeled benea' rv lobe of the leaf auriculiform. 
30. LEJEUNIA. Perianth terete or ue rear lobe of the leaf plane. 
Dg MADOTHECA. Perianth compressed, 2-li 
de: 
38. CALYPOGEIA. Perianth none. Involucre fleshy, sibel: 
Susorper L RICCIACEX. 
Terrestrial or aquatic, frondose little annuals, with the fruit immersed in 
the are or sessile upon it. No perianth nor elaters. be azer: sessile, 
gularly. 
A. BRICCHA, Mich.  Froatine Liverworr. (Tab. 20.) 
Fruit immersed in the frond. Involucre none. Calyptra coherent with the 
globose capsule, and crowned with the persistent style. Spores angular. Inflo- 
rescence moncecious or dicecious: antheridia imbedded in the frond. (Named 
after Ricci, an Italian botanist.) 
* Frond ir-cavities : terrestrial. 
1. BR. glatica, L. Frond maa stellate-lobed ; its divisions linear- 
ebovate, emarginate-lobed, channelled, glaucous, membranaceous along 
the margin. — On moist ground. (Ea. 
