0ABP0PH7TA. 149 



duced stems and leaves of the Vine-rape of Sumatra 

 (Rafflesia). 



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. 



305. 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 Ooleoclimtece. 



2. Red or purple mostly marine plants; fruit-spores many. .Moridem. 

 8. Parasites; fruit-spores many, enclosed in sacs Aseomyeetea. 



4. Saprophytes; fruit-spores many, on stalks BaHdiomyeetes. 



5. Green fresh-water plants; fruit-spore one OharaceoB. 



Class I. Coleoch^tb^. 



30Y. The genus Coleochaete 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.). 



