HEPATIC^ COLLECTED IN CENTRAL AFKTCA. 329 



Plate XVII. 



r 



Figs. 1-3. Hagiochila Lastii, sp. n. 1, Natural size ; 2, leaves ; 3, perianth with 



involucral leaf. 



Figs. 4-6. Plagiochila dicrana, sp. n. 4, mtural size; 5, leaves; 6, perianth 



and involucral leaf, enlarged. 

 Figs. 7-9. Plagiochila abyssinica, sp. n. 7, Natural size ; 8, portions of stem 



With leaves ; 9, perianth and involucral leaf, enlarged. 

 Figs. 10-14. LeioscT/phus infuscattis, nob. 10, Natural size ; 11, portion of stem 



with leaves ; 12, amphigastrium ; 13, involucral leaves and periantli ; 



14, perianth seen from the side, enlarged. 



Plate XVIII. 



Pigs. 1,2. Bazzania pumila, B^. n. 1, Natural size; 2, portion of stem with 



leaves and amphigastrium. 

 igs. 3, 4. Phragmicoma floreaj sp. n. 3, Stem, natural size ; 4, portion of same 



W'ith perianth and male spike, enlarged. 

 **^gs. ^~S, Lejcunea (§ Odonfolejcunea) Hanningioni, sp, n. 5, Natural size; 6, 



portion of stem with leaves ; 7, fertile branch and {a) section of 



perianth; 8, portion of male spike, enlarged. 

 Figs. 9-12. L€Jeun€a{^Lo2>hoIeJ€im€a)atra,s^,n. 9, Natural size; 10, portion of 



stem with leaves and amphigastria ; 11, perianth and involucral leaves ; 



12, transverse section of perianth. 

 Figs, 13-16. Lejexcnea (§ LojphoJejetmea) sinvata, sp. n. 13, Natural size ; 14, 



portion of stem with leaves and amphigastrium ; 15, perianth with 



involucral 



Plate XIX. 



Prionolejevnea) serrula, sp. n. 1, Natural size ; 2, portion 

 of stem with leaves and amphigastria; 3, perianth with involucral 

 leaves and {a) transverse section, enlarged. 

 Figs. 4-6. Lejminea (§ Prionolejmned) depJanata, sp. n. 4, Natural size ; 5, por- 

 tion of stem with leaves and amphigastria ; 6, involucral leaves and 



perianth with (a) its transverse section. 

 Figs. 7-9. Lejeunea (§ Leptocolea) adhcesiva, sp. n. 7, Natural size; 8, portion 



of stem with leaves and (a) cells more enlarged ; 9, fertile branch. 

 Figs. 10-11. Lejeunea (§ Colura) digitalis, sp. n. 10, Naturalsize; 11, portion 



of stem with leaves and amphigastria, enlarged. 

 Figs, 12-14. Frullama usagara, n.sp.? 12, Natural size; 13, portion of stem 



with leaves and amphigastria ; 14, perianth and involucre, enlarged. 



LI?«^. JOUBN. BOTANY, VOL. XXII. 2 D 



