^j'^P'-'l Bastow, Victorian Hepaticcv. 79 



FRONDOSiE.— Without distinct leaves. 

 {a) Perianth none. 



Metzgeria. — Fruit on under side of frond ; nerve narrow. 



Fig. 9. 

 Aneura (Sarcamitrium). — Swollen, but nerveless ; simple, or 



with one or two lobes. Fig. 10. 

 Blasia. — As Aneura, but more dichotomously divided ; thinnest 



at margins ; small scales on under side ; unequally dentate ; 



lobes often incurved. Fig. 11. 

 Hymenophyton (Symphyogyna). — Fruit on upper side of 



stipitate, orbicular frond ; nerve narrow. Fig. 12. 

 Symphyogyna. — Frond obtruncate, dark green, serrate. Fig. 14. 



{h) Perianth complete. 



PoDOMiTRiUM. — Perianth from the under side of a continuous 



frond. Fig. 13. 

 Blyttia (Steetzia, Syn. Hep., 475). — Perianth from upper side 



of a continuous frond. Fig. 15. 

 Noteroclada. — Involucre confluent with perianth, erect, on 



the upper side ; no stipules ; lobes entire, soft. Fig. 16. 

 Zoopsis. — Perianth lateral ; frond continuous, with alternate 



lateral projections tipped with cilia. Fig. 38. 



FOLIOS^. — Leaves distinct. 



* Leaves succubous ; base with lowest angle on the upper side 

 of the stem. See fig. 37. 



{a) perianth leafy. 



I. Fruit terminal. 



Plagiochila. — Perianth compressed ; stems erect or ascending ; 



no stipules. Fig. 37. 

 Leioscyphus. — Perianth compressed ; stems procumbent, 



stipulate. Fig. 36. 

 Temnoma. — Perianth above trigonous, truncate. Fig. 39. 

 Lophocolea. — Perianth triquetrous ; angles often alate ; 



mouth three-hpped, closed ; stems procumbent, stipulate. 



Fig. 35- 

 Trigonanthus. — Perianth trigonous ; mouth contracted ; stems 



procumbent, stipulate near the fruit. Fig. 21. 

 Jungermannia. — Perianth tubular ; mouth contracted, den- 

 tate ; stipules none, or present on the stem. Fig. 20. 

 SoLENOSTOMA. — Perianth obovate, five-phcate above, with a 



tubular beak. Fig. 43. 



2. Fruit lateral. 



Adelanthus. — Stems erect, nodding ; no stipules. Fig. 40. 

 Chiloscyphus. — Stems procumbent, stipulate. Fig. 34. 



