89 



it seems however that really lateral hairs may also somelimes occur. At all events 

 two hairs may be found on one cell (fig. 18 G). Most of the hairs are early thrown 

 off, leaving however a vestige in the outline of the cell, this being a little enlarged 

 at the upper end. I have once seen a hair given off from a basal cell which had 

 not yet produced any filament. 



Most of the plants bear at the same time sporangia and both kinds of sexual 

 organs, some plants, however, bear only sexual organs. The sporangia are sessile 

 on the sides of the filaments or sometimes borne by the unicellular branchlets 

 (fig. 18 A); they open by a split at the top (fig. 18 A, G). 



Fig. 18. 



Clmnlransia gunandra. .1, plant with 3 branchlets. a cystocarp and sporangia. B, upper end of filament 

 with branehlets bearing antheridia. C, plant with two cystocarps and one sporangium. D. dwarfed plant 

 with antheridia and one carpogonium : a spermatium is lying abox e. E, dwarfed plant (comp. text). F, two 

 antheridia on a branchlet; a spermatium is situated immediately outside one of the antheridia. G, part of 

 filament with a young cystocarp and two empty sporangia. H, plant with three carpogonia with epigynous 

 antheridia, two young, the third in the lerlilizalion stage. / and K. plants with young cystocarps and epi- 

 gynous antheridia. L, plant with carpogoniinn in fertilization stage. (BO:!. 



The carpogonia are situated on the sides of the filaments at various distances 

 from the base; they are bottle-shaped, the trichogyne being of almost the same 

 length as the ventral part. The antheridia are situated either on the carpogonia 

 or on the ramuli; in the first case they are always solitary, in the latter there are 



I), K. I). Vulensk. Sclsk. Skr., 7. H;i-klie, nalui viik-iislc. ok in:illu-ni. Alil. VII. 1. 12 



