CARPOPHYTA. 149 
duced stems and leaves of the Vine-rape of Sumatra 
(Rafilesia). 
303. The female organ in this division is called a car- 
pogone, and consists of a single enlarged cell, or of several 
cells of a special form. In some cases a projection, called 
the trichogyne, is attached to the carpogone; its function 
appears to be the conveyance to the carpogone of the fer- 
tilizing matter received from the antherid. 
304. The antherid is much more variable in structure 
than the female organ. In some cases it is applied directly 
to the carpogone in fertilization, while in others it produces 
antherozoids. 
805. The plant-body shows in general a more perfect 
development in the Carpophyta than in the preceding divi- 
sions. While it is but little developed in the parasitic and 
- saprophytic species, it is well developed in many of the 
Red Seaweeds and the Stoneworts, in which there is often 
a considerable amount of differentiation of the plant-body 
into caulome and phyllome. 
306. Five classes may be readily distinguished, as follows: 
1. Green fresh-water plants; fruit-spores few........... Coleochatew. 
2. Red or purple mostly marine plants; fruit-spores many. . Floridew. 
8. Parasites; fruit-spores many, enclosed in sacs........ Ascomycetes. 
4, Parasites; fruit-spores many, on stalks............ Basidiomycetes. 
5. Green fresh-water plants; fruit-spore one...... .... ...Characee. 
Ciass I. CoLEocHaTEs. 
307. The genus Coleochete shows us the simplest form 
of sexual reproduction among the Carpophytes. The spe- 
cies are all small green fresh-water plants, composed of 
branching filaments, which are arranged radially; the diam- 
eter of each cushion-like mass is from 1 to 2 mm. (.04 to 
,08 in.). 
