GLOSSARY ix 



which the pollen germinates ; it is sticky, rough, or hairy at 



maturity. 

 stipel. A stipule of a leaflet. 

 stipule. A leafy or scale-like appendage at the base of a petiole. 



Stipules are usually two in each case. 

 stomate, stoma (plural stomates^ or stomal a). The openings on leaves 



and green parts through which gases pass ; diflfiision-pores or 



" breathing-pores." 

 stone-fruil. A drupe. 

 strict. Said of a stem that grows straight up, without breaking into 



branches. 

 style. The stalk between the ovary and stigma ; sometimes not present. 

 syngenesiojis . Said of anthers when they cohere in a ring, as in the 



Compositae, the style usually being enclosed. 

 tap-root. A single or leading strong root that runs straight down into 



the earth. 

 tendril. A slender coiling member of a plant that enables it to climb. 



A tendril may represent a branch, a petiole, a leaflet, a stipule, an 



entire leaf. 

 terminal. At the end ; as a flower borne on the end of a shoot. See 



lateral, 

 thyrse. A compound, usually elongated or pyramidal flower-cluster in 



which the mode of inflorescence is mixed. 

 torus. The end of the flower-stalk (usually somewhat enlarged) to 



which the flower-parts' are attached; receptacle. 

 transpiration. Evaporation or loss of water from plants. 

 umbel. A flower-cluster opening from the outside, in which the branches 



or stems arise from one place, as the rays of an opened umbrella. 

 umbellet. -A small umbel, comprising part of a larger or compound 



umbel. 

 valve. One of the integral parts into which a fruit or an anther natu- 

 rally splits, or into which it is divided. 

 venation. The mode or fashion of veining, as in a leaf or petal. 

 xyleni. Wood tissue. 



