55 



Plant parasitic or growing out of ready-formed organic matter. 

 Destitute of green chlorophyll or any other generally diffused 

 coloring matter. Organs of fructification, or their supports, more 

 conspicuous than the organs of vegetation, which usually consist 

 of a mycelium, or loose mass of interlacing, thread-like cells. 

 Growing on or in other plants, or in damp places, and commonly 

 of rapid growth. Some of the minute forms are amphibious and 

 constitute ferments. Fungi. 182 



Plants not parasitic, and not growing in the dark, but containing 

 chlorophyll or green matter, so that they live on aerial food. 



Thallus made up of large green or otherwise colored cells and long, 

 thread-like, colorless cells. Growing in damp or dry places, and 

 of slow growth. Lichenes. J77 



Cells of the thallus not of unlike character, or else growing in 

 water. 



Growing mostly on the earth, on tree trunks, or rocks. If aquatic, 

 floating on the water and not immersed. Hepaticce. 148 



Growing mostly immersed in salt or fresh water. In some cases 

 microscopic and consisting of few cells. Algae. 154 



126. Not entirely made up of cells, but having some fibro-vascular 



tissue. 127 



Plants consisting of a few cells, which are sometimes very long, 

 arranged like a central stem with whorled branches. Growing 

 immersed in fresh water, and attached to the bottom by long cells, 

 which perform the office of roots. Spores produced in small, 

 axillary, twisted, nut-like cases. The cells are transparent, and 

 with the microscope colorless globules may be seen in constant 

 circulation from end to end of each cell. These plants are usu- 

 ally included among the algae. CHARACE.K 



Consisting of cellular tissue only. Spore cases consisting of cap- 

 sules furnished outside, with a calyptra. Muscinece. 



Calyptra separating from the capsule at its apex, and, at maturity, 

 remaining attached, to the base of the capsule or of its stalk. 

 Capsule not furnished with a distinct lid. Spores in the capsule 

 usually mixed with hygroscopic, spiral, elastic threads called ela- 

 ters. Rhizoids or root hairs one celled. 14.8 



