Proceedings of the Ohio State Academy of Science. 301. 



Habit — General aspect. 



Habitat — The place where a plant grows. 



Halberd-shaped — Same as hastate. 



Hastate — Arrow-shaped with the basal lobes diverging. 



Herbaceous - — Having the texture of common leaves. 



Hermaphrodite — An individual having both male and female- 

 sexual organs. 



Heterosporous — Having microspores and megaspores. 



Homosporous — Having only one kind of spores on the sporo- 

 phyte. 



Hyaline — Clear and translucent. 



Hygroscopic — Readily absorbing and giving off water, by 

 which means movements are produced. 



Imbricate — Overlapping. 

 Incised ■ — Cut into sharp lobes. 



Indusium — The membranous covering of the sori in many- 

 species of ferns. 

 Inequilateral — With unequal sides. 

 Inferior — Situated or arising below other organs. 



Laciniate — Cut into narrow segments or lobes. 



Lamina — The blade of a leaf. 



Lanceolate — Lance-shaped. 



Leaflet — One of the divisions of a compound leaf. 



Ligulate — Provided with or resembling a ligule. 



Ligule — A strap-shaped organ, sometimes minute. 



Linear — A long and narrow organ with the sides nearly parallel., 



Lobed — Divided to about the middle or less. 



Lunate • — Crescent-shaped. 



Megaspore — The larger of the two kinds of nonsexual spores^ 



produced by heterosporous plants. 

 Megasporangium — A sporangium which produces megaspores^ 

 Membranous — Thin and rather soft and pliable. 



