3 2 4 GLOSSARY. 



OBLANCEOLATE. The reverse of lanceolate ; broadest near the apex. 



OBLONG. Two or three times longer than broad. 



OBOVATE. The reverse of ovate. 



OBTUSE. Blunt ; without point. 



ORBICULAR. Circular. 



OVATE. Egg-shaped ; the broadest part near the base. 



PALEACEOUS. Clothed with chaff. 



PALMATE. With spreading divisions like the fingers of the hand. 



PANICLE. A cluster of fruit in which the stems branch more or less. 



PAPYRACEOUS. Paper-like. 



PEDICEL. A tiny stalk ; especially the stalk of the sporangia. 



PELTATE. Shield-shaped ; said of scales and indusia that are at- 

 tached to the frond by their centers. 



PERSISTENT. Not falling away ; remaining on the plant. 



PETIOLE. Same as stalk and stipe. 



PINNA (PL. PINNAE). One of the primary divisions of a frond. 



PINNATE. Consisting of several leaflets arranged on each side of a 

 common petiole or rachis. 



PINNATIFID. Divided in a pinnate manner, but with leaflets not 

 entirely separate. 



PINNULE. One of the small divisions of a pinnate leaf. 



PROCUMBENT. Lying along the ground. 



PROLIFEROUS. Giving rise to new plants. 



PROTHALLIUM (PL. PROTHALLIA). The minute scale-like growth 

 from the spore of a fern. 



PUBESCENCE. A covering of soft, short hairs. 



PUBESCENT. Covered with fine, soft hairs. 



QUADRIPINNATE. Four times pinnate. 



RACHIS. The continuation of the stipe through a compound frond. 



RECEPTACLE. The part of the frond to which the sporangia are at- 

 tached, especially in the Filmy Ferns. 



REFLEXED. Abruptly bent downward or backward. 



RENIFORM. Kidney shaped. 



REVOLUTE. Rolled backward, as the margins of some fronds. 



RHIZOME. An underground stem ; a rootstock. 



ROOTSTOCK. Same as rhizome. The portion that produces the 

 fronds in most of our species. 



SCALES. The chaff on the stems of ferns. 



