862 



Glossary of Special Terms 



Ovate. In outline like a longitudinal section 



of a hen's egg. 

 Ovoid. Shaped like a hen's egg. 

 Ovule. The macrosporange of flowering plants, 



becoming the seed on maturing. 



Palmate. Diverging radiately like the fingers. 



Panicle. A compound flower-cluster of the 

 racemose type. 



Paniculate. Borne in panicles or resembling a 

 panicle. 



Papilionaceous. Term applied to the irregular 

 flower of the Pea Family. 



Papillose. With minute blunt projections. 



Parasitic. Growing upon other plants and 

 absorbing their juices. 



Parietal. Borne along the wall of the ovary, 

 or pertaining to it. 



Parted. Deeply cleft. 



Pedicel. The stalk of a flower in a flower- 

 .cluster. 



Peduncle. Stalk of a flower, or a flower-cluster. 



Pedunctdate. With a pedvmcle. 



Peltate. Shield shaped; a flat organ with a 

 stalk on its lower surface. 



Perfect. Flowers with both stamens and pis- 

 tils. 



Perianth. The modified floral leaves (sepals 

 or petals), regarded collectively. 



Pericarp. The wall of the fruit, or seed-vessel. 



Perigynous. Borne on the perianth, around 

 the ovary. 



Persistent. Organs remaining attached to 

 those bearing them after the growing period. 



Petal. One of the leaves of the corolla. 



Petaloid. Similar to petals; petal-like. 



Petiohik. The stalk of a leaflet. 



Petiole. The stalk of the leaf. 



Phyllode. A bladeless petiole or rachis. 



Pilose. With long soft hairs. 



Pinna. A primary division of a pinnately com- 

 povmd leaf. 



Pinnate. Leaves divided into leaflets or seg- 

 ments along a common axis. 



Pinnatifid. Pinnately cleft to the middle or 

 beyond. 



PistU. The central organ of a flower contain- 

 ing the ovules. 



Pistillate. With pistils; and usually employed 

 in the sense of without stamens. 



Placenta. An ovule-bearing surface. 



Plicate. Folded into plaits, like a fan. 

 Plumose. Resembling a plume or feather. 

 Pollen. Pollen-grain. See Microspore. 

 Polygamous. Bearing both perfect and im- 

 perfect flowers. 

 Polypetalous. With separate petals. 

 Pome. The fleshy fruit of the Apple Family. 

 Puberident. With very short hairs. 

 Pubescent. With hairs. 

 Punctate. With translucent dots or pits. 

 Pyriform. Pear-shaped. 



Raceme. An elongated determinate flower- 

 cluster with each flower pedicelled. 



Racemose. In racemes, or resembling a ra- 

 ceme. 



Rachis. The axis of a compound leaf, or of a 

 spike or raceme. 



Radiant. With the marginal flowers enlarged 

 and ray-like. 



Radicle. The rudimentary stem of the em- 

 bryo; hypocotyl. 



Raphe (Rhaphe). The ridge connecting the 

 hilum and chalaza of an anatropous or am- 

 phitropous ovule. 



Ray. One of the peduncles or branches of an 

 umbel. 



Receptacle. The end of the flower-stalk, bear- 

 ing the floral organs; or, in Compositae, 

 bearing the flowers. 



Recurved. Curved backward. 



Reflexed. Bent backward abruptly. 



Regular. Having the members of each part 



alike in size and shape. 

 . Reniform. Kidney-shaped. 



Repand. With a somewhat wavy margin. 



Reticulate. Arranged as a network. 



Retrorse. Turned backward or downward. 



Retuse. With a shallow notch at the end. 



Revolute. Rolled backward. 



Rhachis. See Rachis. 



Rootstock. A subterranean stem, or part of 

 one. 



Rostrate. With a beak. 



Rotate. With a flat, round corolla limb. 



Rugose. Wrinkled. 



Sac. A ■ pouch, especially the cavities of 



anthers. 

 Sagittate. Like an arrow-head, with the lobes 



turned downward. 



