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PLATE XVIII. 

 Sphagnum acutifolium, Ehrhart. 



Fig. a. — Plant of the typical form. 

 „ I. — Part of stem with a branch fascicle. 



„ 2. — Male inflorescence. FiG. 26. — Bract and antheridium from same. 

 „ 3. — Fruit and pericha;tium. FiG. 4. — Bract from same. 

 „ 5. — Stem leaves. Fig. 5 a a. — Areolation of apex of same. 

 „ 6. — Leaves from middle of a divergent branch. 

 „ 6 a 6, — Areolation of base. Fig. 6^. — Transverse section. 

 „ 6p. — Point of same. Fig. 6c. — Cell from middle x 200. 

 „ 7- — Basal intermediate leaves. Fig. 8. — Leaf from a pendent branch. 

 „ gx. — Part of section of stem. 

 „ 10.— Part of a branch denuded of leaves. 



