GLOSSARY. 323 



FOVEOLATE. Honeycombed. 



FROND. A fern leaf. Properly the word frond includes both stipe 

 and blade, but frequently it is used simply to designate the leafy 

 portion. 



FRUIT. Sporangia. 



FRUIT-DOT. A sorus. 



FUGACIOUS. Short-lived ; falling early. 



GLABROUS. Smooth. 



GLAND. A minute globular or pear-shaped organ which usually 

 secretes a resinous, waxy, gummy or aromatic product. 



GLANDULAR. Furnished with glands. 



GLAUCOUS. Covered with a very fine, powdery substance, as plums 

 are. 



GLUTINOUS. Covered with a sticky exudation. 



HABIT. The general appearance of a plant. 



HABITAT. The natural dwelling place of an animal or plant. 



HIRSUTE. Having coarse stiff hairs. 



IMBRICATED. Overlapping or breaking joints like shingles on a 

 roof. 



INCISED. Cut into deep sharp teeth. 



INDUSIUM (PL. INDUSIA). The thin, scale-like covering of imma- 

 ture sori. 



INVOLUCRE. The cup-shaped processes surrounding the sporangia 

 in the filmy ferns ; an indusium. 



LACINIATE. Cut into deep, narrow, irregular lobes ; slashed. 



LANCEOLATE. Rather narrow and tapering to the apex ; occasion- 

 ally tapering at base also. 



LAMINA. A blade ; the leafy portion of a frond. 



LINEAR. Long and narrow. 



LOBE. One of the small divisions of a frond. 



LUNATE. Shaped like a half-moon. 



MARGINAL. Situated on, or close to the margin. 



MEMBRANACEOUS. Like a membrane ; very thin and flexible. 



MIDRIB. The prolongation of the stipe through an undivided frond 

 or pinna. 



MIDVEIN. The principal vein in a pinnule or segment. 



MUCRONATE. Having the midvein prolonged beyond the pinnule 

 forming a point. 



