x BOTANICAL TERMS. 



Laticiferous. Vessels of plants, such as gutta percha, dandelion, 

 lettuce, etc., are so called, because they contain a fluid like 

 milk. 



Matrix. The substance upon which a plant grows. 

 Membranous. Tissue which is composed uniformly of similarly- 

 constructed cells is so called. 



Medullary rays. Lines which radiate from the pith to the bark all 

 round the stem of common forest trees. 



Nidus. The nest or cavity in which a parasitic plant is developed. 



Phytozoa. Microscopic thread-like bodies, with movements re- 

 sembling those of animals, occurring in the reproductive organs 

 of the flowerless plants. 



Proliferous. Applied to plants which propagate themselves by 

 forming new growths upon the old decaying bases. 



Phanerogamous. Applied to all the flowering plants, because they 

 are propagated by conspicuous flowers and seeds. 



Scalariform. Tissue is thus called whose fibres are so broken up 

 as to appear in the form of bars or lines, like the steps of a lad- 

 der, seen beautifully in tree-ferns. 



Sessile. Seated on the vegetative basis, without stem or pedicel. 



Sinuses. Deep grooves or hollows. 



Soredia. Collections of mealy powder scattered over the surface 

 of lichens, and capable of propagating them. 



Spore. The ultimate germinating cell of flowerless plants, with- 

 out lobes, resembling a particle of fine dust. 



Sporule. A minute round cell, capable of reproducing the parent 

 plant, resembling buds in not being developed by a process of 

 reproduction, but differing from them in being produced in 

 special organs. 



Sporidia. The compound spores of lichens, containing minuter 

 . spores in their interior. 



Sporangia. The hollow cases or receptacles which contain the 

 spores. 



Striae. Delicate grooved lines or markings. 



Tartareous. Applied to the lime-like appearance and structure of 

 some lichens. 



Thallogens. Applied to flowerless plants whose vegetative part 

 consists of thin cellular expansions, increasing generally in a 

 centrifugal manner. 



Vascular. Woody tissue, consisting of bundles of fine cylindrical 

 fibres, often of great length, tapering at both ends. 



