GLOSSARY. 345 



Gramineous : pertaining to grain or the Gramineae. 



Granulose : the most readily soluble constituent of a starch grain. 



Guard-ceUe : the two cells surrounding a stomate. 



Gymnos (as a prefix) : naked. 



Gymnocarpoits : with a disc-like, exposed hymenium, as in some 



Lichens, etc. 

 Oomnosperm : a plant with naked seeds (not enclosed in an ovary). 

 Gymnospermous : having naked seeds. 

 Gynandrowa : the stamens united with the pistil. 

 Gyrugdum, : the pistil or pistils of a flower taken collectively. 



Sabit : the general appearance of the plant. 



Habitat: the place where a plant grows. 



Hackle : same as heckle. 



Hairs : outgrowths from cells ; hair-like appendages. 



Hairy : having hairs. 



Hastate : with a spreading lobe on each side at the base. 



Haustoria : outgrowths from • hy phse, which penetrate the cells fo> 



the purpose of obtaining nourishment. 

 Heartrshaped : ovate with a sinus at base ; cordate. 

 Heart-wood : the mature wood of exogenous trees, generally more or 



less colored and destitute of sap. 

 Heckle : to draw through teeth or a comb in order to separate the 



fibre. 

 Heliotropism : turning towards the sun or light. 

 Hepta (as a prefix) : seven. 



Herb : a plant in which no woody tissue develops. 

 Herbaceous : like an herb ; of the texture of an herb. 

 Herbarium, Herbal : a collection of dried plants. 

 Hermaphrodite : having both stamens and pistils in the same flower. 

 Heteros (as a prefix) : diverse or various. 

 Hex (as a prefix) : six. 



Hilum : the scar of the seed, or point of its attachment in the ovary. 

 Hirsute : having stiflfeh or beard-like hairs. 

 Hispid : having stifi' hairs ; bristly. 

 Histology: that department of botany which treats of minute 



anatomy or of tissues. 

 Hoary: grayish-white. 



Homologue : that which corresponds in structure. 

 Homxihgous : of similar or corresponding structure. 

 Hybrid : a cross-breed between two species. 

 Hymenial layer : the spore-bearing layer of hyphse in Fungi. 

 Hymenium: same as hymenial layer. 

 Hyphm : the vegetative threads or filaments of Fungi. 

 Hypo (as a prefix) : under ; beneath ; lower. 

 Hypoderm: thick-walled or otherwise peculiar cells immediately 



below the epidermis. 

 Hypogyrums : inserted under the pistil. 

 Hypocotyledonary : under or below the cotyledons in the embryo, as 



hypocotyledonary stem. 



