52 



11. Nucleus, 360-425 long. T. intricata Leonh. 



12. Nucleus, 450-500 long. T. intertexta Allen, 

 f f Non ai:enuata. 



13. Ultimate cell mucroniform ; nucleus, 480-500. T. 



apiculata A. Br. (S. Am.) 



FAM. II. CHARGE v. Leonhardi. 



Stem and leaves naked or corticated. Verticils consist of 6-12 

 leaves, mostly surrounded by a simple or double crown of sti- 

 pules. Leaves many-celled, with several leaflet-bearing nodes (rarely 

 with only one). Leaflets (except from the basilar nodes) one-celled, 

 always much shorter than the primary ray of the leaf. Antheridia 

 always lateral, occupying the place of Hie leaflets, on the inner side of 

 the leaf, usually only one on a node. Sporophydia, likewise, on 

 inner side of leaf. CORONULA ALWAYS FIVE-CELLED, containing chloro- 

 phyll, persistent. Capsule of spore often developing a calcareous 

 shell. 



GENUS III. LAMPROTHAMNUS, A. Br. 



Sporophydia borne on the inferior side of the cell which carries 

 the Antheridium. 



European, small, alopecuroides A. Br. 

 Var. a. Pouzolsii A. Br. 

 Var. b. Wallrothii (Rupr.) A. Br. 

 Var. c. Montagnei A. Br. 



GENUS IV. LYCHNOTHAMNUS (Rupr.) v. Leonh. 



Sporophydia occupying the place of a leaflet on the anterior 

 side of the leaf, situated between Antheridia. 

 * Dioecious, no stipules, stelliger (Bauer), A. Br. 

 * * Monoecious, long stipules. 



1) Sejuncta; Sporophydia and Antheridia on different nodes of 



same plant, macropogon A. Br. 



2) Conjuncta ; sporo. and Anther, on same nodes. barbatus 



(Meyen), Leonh. 



GENUS V. CHARA (VAILL), v. LEONH. 



Sporophydia borne on the upper side of the cell bearing the 

 antheridium in monoecious species, or of the cell bearing the 

 bract in disjoined (sejunctae) and dioecious species. 



