220 GLOSSAEY 



Hilum. The point of attachment of a seed or ovule. 



Hirsute. Covered with coarse stiffish hairs. 



Hispid. Covered with rigid bristly hairs. 



Hispidulous. Diminutive of hispid. 



Hoary. Covered with a grayish-white close, fine pubescence. 



Homogamous. Bearing one kind of flower only. 



Hyaline. Thin ; translucent. 



Hybrid. A cross between two species. 



Hypocotyl. The radicle. 



Hypogynous. Situated on the receptacle at or below the base of the ovary. 



Imbricate. Overlapping. 



Imperfect. Without both sexual organs fully developed. 



Incised. Irregularly deeply and sharply cut. 



Included. Not protruding beyond the surrounding envelope. 



Incumbent. Having the back of one of the cotyledons lying against the 

 radicle. 



Indefinite. Not constant in number, and numerous. 



Indehiscent. Not opening. 



Indigenous. Native. 



Indusium. The membrane covering the fruit-dot in ferns. 



Inequilateral. With sides unequal. 



Inferior. Situated below. 



Inflexed. Bent inward abruptly. 



Inflorescence. The flowering part of plants with especial reference to the 

 mode of arrangement. 



Inserted. Attached to. 



Internode. Lying between two nodes. 



Introrse. Turned inward. 



Involucel. A secondary involucre. 



Involucre. A circle of bracts subtending a flower or a number of flowers. 



Involute. Inwardly rolled. 



Irregular. A flower in which members of the same class of organs are dis- 

 similar. 



Keel. A longitudinal ridge ; the two united lower petals of a pea flower. 



Labiate. Lipped. 



Laciniate. Cut into narrow lobes. 



Lanceolate. Shaped like a lance ; broadest below the middle and tapering 

 upward. 



Lateral. Pertaining to the side. 



Lax. Loose and slender. 



Leaflet. A division of a compound leaf. 



Legume. A simple fruit dehiscent by both sutures. 



Lenticular. Shaped like a lens. 



Ligulate. Provided with a ligule. 



Ligule. A strap-shaped corolla, as the rays of Compositae ; a scarious pro- 

 jection from the summit of the sheaths in Gramineae. 



Limb. The expanded portion of a floral envelope. 



Linear. Long and narrow with sides about parallel. 



Lobe. A segment of an organ. 



