250 



GLOSSARY. 



the oosphere in the embryo-sac, and 

 together with it form the egg-appara- 

 tus. 



Te's-ta (testa, a shell). The outer 

 seed-coat. 



Tt-ra-dy'n-a-inous (Terpas, four; 

 SuVa/oas, strength}. Said of an andrce- 

 cium in which there are four long and 

 two shorter stamens. 



Tha'1-loid (thallus ; elfios, form). 

 Thallus-like. 



Tha'1-lus (0aAA.6?, a young shoot). 

 The body of lower plants, which ex- 

 hibits no differentiation of stem, leaf, 

 and root. 



The' ca, pi. thecae (0rJKTj, a case). The 

 "anther-cell," that is, the case con- 

 taining pollen ; sometimes used of 

 other spore-cases. 



Tra'cheary tissue. A general name 

 given to the yessels and ducts found 

 in fibro vascular bundles. 



Tra'-che-ides (rpa^vs, rough; elSos, 

 form). Tracheary cells that are closed 

 throughout. 



Tri'-chome (0pt, hair). A general 

 name for a slender outgrowth from 

 the epidermis, usually arising from a 

 single cell. 



Tur-gi'd i ty (turgidus, swollen*). The 

 normal swollen condition of cells 

 which results from the avidity of pro- 

 toplasm for water. 



Vein (vena, a vein). The fibre-vascu- 

 lar bundle of leaves or any flat organ. 



Ve na'-tion (vena, a vein). The mode 

 of vein distribution. 



Xy'-lem (f JA.oi', wood). The wood 

 (inner) portion of the fibre-vascular 

 bundle. 



Zo'-o-spore (Aov, an animal ; spore). 

 A free-moving spore. 



Zy-go-mo'r-phic (vyov, a yoke: 

 Mop<J7, form). Said of a flower which 

 can be bisected by only one plane into 

 similar halves. 



Zy-go'ph-y-ta (vyov, a yoke ; $VTOV, a 

 plant). A primary division of plants, 

 named from their mode of reproduc- 

 tion, the sexual spore being produced 

 by conjugation. Zy'-go-phyte is the 

 English equivalent. 



Zy'-go-spore (fryov, a yoke: spore). 

 The spore of zygophytes, formed by 

 conjugation. 



