The Fern Lover's Companion 



223 



Gland. A small secreting organ, globular or 



pear-shaped; it is often stalked. 

 Glaucous. Covered with a fine bloom, bluish- 



white and powdery, in appearance 



like a plum. 

 Hastate. Like an arrowhead with the lobes 



spreading. 

 Imbricate. Overlapping, like shingles on a roof. 



Incised. Cut irregularly into sharp lobes. 



Indusium. The thin membrane covering the 



sori in some ferns. 

 Involucre. In ferns, an indusium; in filmy 



ferns, cup-shaped growths encircling 



the sporangia. 

 Lamina. A blade; the leafy portion of a fern. 



L.'VciNi.A.TE. Slashed; cut into narrow, irregular 



lobes. 

 Lanceolate. Lance-shaped; broadest above the 



base and tapering to the apex. 

 Lobe. A small rounded segment of a frond. 



Midrib. The main rib or vein of a segment, 



pinnule, pinna, or frond; a midvein. 

 Mucronate. Ending abruptly in a short, sharp 



point. 

 Oblong. From two to four times longer than 



broad and with sides nearly parallel. 

 Obtuse. Blunt or rounded at the end. 



OiDES. A Greek ending, meaning like, or 



like to, as polypodioides — like to a 



polypody. 

 OosPHERE. The egg-cell in fern reproduction — 



becoming the oospore when fer- 

 tilized. 

 Ovate. Egg-shaped with the broader end 



downward. 

 Palmate. Having lobes radiating like the 



fingers of a hand. 



