298 GLOSSARY. 



Open grown. Said of trees when not grown sufficiently close toother 



trees to be influenced by them. 



Ovary. The lower or enlarged part of the pistil bearing the ovules. 

 Ovate. About twice as long as broad and tapering from near the 



base to the apex. (e. g. leaves of Balsam Poplar.) 

 Ovoid. Egg-shaped. 

 Ovule. A rudimentary seed. 

 Palmate. Parts originating from a common point, 'as the veins, lobes 



or divisions of a leaf. (e. g. Leaflets of Ohio Buckeye.) 

 Panicle. A loose flower cluster, (e. g. White Ash, Plate 57.) 

 Papilionaceous. Butterfly-shaped, applied to flowers of the pea fam- 

 ily, (e. s. locust, Plate 47.) 

 Parasite. A plant or animal that lives upon and obtains its food 



from other living plants or animals. 

 Parietal placenta. A placenta upon the wall of the ovary, (e. g 



Coffee Tree Plate 46.) 

 Parted. Separated nearly to the base. 

 Pedicel. A stalk of a single flower of a flower cluster. 

 Peduncle. A stalk of a solitary flower or the cgmrnon stalk of a> 



flower cluster. 

 Pendulous. Hanging. 

 Penta. Prefix, meaning five. 

 Perennial. A plant living more than two years. 

 Perfect flower. One having both essential organs i. e. stamens and 



pistil, (e. g. Wild Crab, Plate 40.) 

 Perianth. The floral envelopes. 

 Pericarp. The ripened ovary; the seed vessel. 

 Persistent. Remaining beyond the period when such parts generally 



fall. 



Petal. One of the divisons of a corolla. 

 Petiole. Leaf-stalk. 

 Pinnate. Parts arranged on opposite sides of a main axis. (e. g. 



Leaflets of Mountain Ash.) 

 Pinnatifld. Pinnately lobed or cleft, (e. g. leaves of Red Oak, Plate 



33.) 

 Pinnule. A secondary leaflet in a pinnately decompound leaf. (e. g. 



Honey Locust.) 

 Pistil. The part of the flower bearing the ovules and which ripens 



into the fruit. 



Pistillate. Bearing pistils but no fertile stamens. Often used syn- 

 onymously with female. 



Placenta. Place of attachment of ovules in an ovary. 

 Pollen. Small spores produced by the anthers for the fertilization of 



the ovules. 



