APPENDIX 465 



(iTwmfters refer to paragraphg.) 



Odd-pinnate. Having a, terminal leaflet: applied to compound pinnate leaves. 



100. 

 (Ecology, cekology. See Ecology. 



Offset. A rosette, especially a young rosette which is continuing the propaga- 

 tion of the plant. 443. 

 Ontogeny. Life-history of an organism. 423c. 

 Operculum. Jiid of a mess capsule (4286) : a lid of any organ, as of a pod or 



anther. 

 Orbicular. Circular. 131. 

 Order. Family. 

 Organ. A part of a living body directly associated with the vital functioning. 



118o. 

 Organism. A body exhibiting life: an anim.al or plant. 

 Oval. Broadly elliptical. 131. 



Ovary. That part of a pistil which bears the ovules (or seeds). 143. 

 Ovate. A flat body about twice as long as broad, and tapering from near the 



base to a very narrow or pointed apex. 129. 

 Palet. Inner glume in the flower of grasses, 261. 



Palmate. Parts attached to or radiating from a common point: digitate. 94. 

 Panicle. An open or loose flower-cluster of the indeterminate type, but the 

 anthesls often more or less mixed, and which is generally widest towards 

 the base. 221. 

 Papilionaceous. Applied to the typical flowers of the pea family. 237. 

 Pappus. The bristle-like, plume-like, barb-like, or otherwise disguised calyx 



of compositous flowers. 199. 

 Parasite. A plant which lives and subsists upon another living organism. 



435, Lxxix. 

 Parietal placenta. A placenta upon a wall of the locule. 158a. 

 . Parted. Said of leaf -blades which are divided about three-fourths the depth 



of the blade. 104c. 

 Pedicel. A secondary flower-stalk : a stalk of a single flower in a pedunculate 



cluster: see peduncle. 183, 183a. 

 Peduncle. Flower-stalk: used to designate the single stem of solitary flowers, 

 or of flowers in a simple or unbranched sessile cluster, and also for the 

 common stalk of a cluster: see pedicel. 183, 183a. 

 Peltate. Attached to the expanded surface, rather than to the edge or margin: 

 said chiefly of leaves in which the petiole is attached inside or beyond the 

 edge. 125, Fig. 111. 

 Pentamerous. Parts in fives. 246o. 

 Pepo. Fruit of the kind represented by the pumpkin, squash, melon and 



cucumber. 356. 

 Perennial. A plant which lives more than two years. 488. 



EE 



