1084 



GLOSSARY 



Parasitic, Growing on and deriving nour- 



islunent from another plant. 

 Parietal. Borne on or pertaining to the 



wall or inner surface of a capsule. 

 Parted. Cleft nearly, but not quite to 



the base. 



Pectinate, Pinnatifld with narrow, closely 



set segments; comb-like. 

 Pcdaie. Palmately divided or parted, 



with the lateral segments 2-cleft. 

 Pedicel. The stalk of a single flower in a 



flower-cluster. 



Pedicellate, Pcdi celled. Furnished with a 

 pedicel. 



Peduncle. A primary flower-stalk, sup- 

 portmg either a cluster or a solitary 

 flower. 



Peduncled, Pedunculate. Furnished with 

 a peduncle. 



Peltate. Shield-shaped; a flat organ, with 

 a stalk on its lower surface. 



Pendulous. More or less hanging or de- 

 clined. Pendulous ovule, one that hangs 

 from the side of the cell. 



Penicillate. With a tuft of hairs or hair- 

 like branches. 



Penta-, in compoimds, means five. 



Pentagonal. Five-angled. 



Perennial. Lasting from year to year. 



Perfect (flower). Having both stamens 

 and pistfls. 



Perforated. With holes. 



Perianth. The floral envelopes of the 

 flower, especially used Avhen calyx and 

 coroUa cannot be distmguished. 



Pericarp. The wall of the fruit, or seed- 

 vessel. 



Perigynium (-a). The more or less in- 

 flated sac-like organ surrounding the 

 pistfl m Carez. 



Perigynous. Borne around the ovary. 

 Persistent. Long-continuous, as a calyx 

 upon the fruit, leaves through winter. 



Personate. Masked; bilabiate, and the 

 throat closexl by a prominent palate. 



Petal One of the leaves of the corolla. 



Petaloid. Petal-lflte; resembling or colored 

 hke petals. 



Petiolaie. Having a petiole. 



Petiole. The leaf-stalk. 



Petioied Furnished with a petiole. 



Pettolulate. y^it\i a petiolule (leaflet). 



Petiolule. The stalk of a leaflet. 



i haenogamous. Having flowers with sta- 

 mens and pistils and producing seeds. 



P^yjjode Phyllodium (-a). A somewhat 

 dilated petiole having the form of and 

 serving as a leaf-blade. 



Phyllopodic. With a leafy base. 



-phyllous (in composition). With leaves 

 as gamophyllous, v^ith united leaves, and 

 dtphyllous, with two leaves, etc. 



Pilose. Hairy, with soft hairs. 



Pinna (pi. Pinnae). One of the primary 

 q\^sions of a pinnate or compoundly 

 pmnate frond or leaf. ^ 



Pinnate (leaf). Compound, with the leaf- 

 lets arranged on each side of a common 

 petiole. 



Pinnatifld. Pinnately cleft. 



Pinnatisect. Pinnately divided. 



Ptnriule. A division of a pinna. 



PistiL The central organ of a flower con- 

 taming the macrosporanges (o\-ules). 



Pistillate. Provided with pistils, and. in 

 Its more proper sense, without stamens. 



I^ttted. Marked with small depressions or 

 pits. 



Placenta. An o\'ule-bearing surface. 



Plane. With a flat, not curved surface. 



Planoconvex. Plane on one side and con- 

 vex on the other. 



Plicate. Folded into plaits, like a fan. 



Plumose. Having fine hairs on each side, 

 like the plume of a feather. 



Plumule. The rudimentary terminal bud 

 of the embryo. 



Pod. Any dry and dehiscent fruit. 



Pointed. Acuminate. 



Pollen. PoUen grain. See Microspore. 



Pollinia. The pollen-masses of the Or- 

 chid and Milkweed Famflies. 



Polliniferous. Bearing pollen. 



Poly-, in compoimds, means many. 



Polyadelphous. Applied to stamens which 



are united by their filaments into many 

 sets. 



Polygamous. Bearing both perfect and 

 imperfect flowers. 



Polymorphous. Of several forms. 



Polypetalous. Possessing many petals. 

 Applied by the older botanists to flowers 

 having the petals distinct or ununited. 



Polysepalous. When the sepals are dis- 

 tinct. 



Pome. The fleshy fruit of the Apple 

 Fanuly. 



Posterior. On the side towards the axis; 

 see anterior. 



Prickles. Sharp elevations of the bark. 

 and coming off with it, as in the rose. 



Prismatic. Of the shape of a prism, angu- 

 lar, w^th flat sides, and of nearly uni- 

 form size throughout. 



Procumbent. Trailing on the ground. 



Proliferous. Bearing offsprings; a shoot. 

 a branch, a rosette, or a flower produc- 

 mg a shoot ending in a similar organ. 



Prostrate. Lying flat upon the ground. 



Prothallium. The sexual generation of 

 Pteridophyta. 



Pruinose. Frosted; covered with a powder 

 like hoar-frost. 



Pseudo (in combinations). Falsely. 



Pteridophytes. Fern-plants; ferns and their 

 alUes. 



Puberulent. Minutely pubescent. 

 Pubescent. Covered with hairs. 



Pulverulent. Dusted; covered apparently 

 with flne powder. 



Pulvinate. Cushioned, or shaped like a 

 cushion. 



Punctate. Dotted with depressions or 

 with translucent internal glands or 

 colored dots. 



Puncliculate. Minutely punctate. 



Pungent. Terminating in a rigid sharp 

 point; acrid. 



Pustular, Pustulate. With blister-like ele- 

 vations. 



Pustule. Blister or blister-like process. 



Putqmen. The bony part of a stone-fruit. 



Pynform. Pear-shaped. 



Pyxis, A capsule whose deliiseence is 

 circumscissfle. or which opens by a cir- 

 cular, horizontal line, so that the upper 

 part comes off like a lid. 



Quadrate. Nearly square in form. 



Raceme. An elongated indeterminate flow- 

 er-cluster with each flower pedicelled. 



Racemose. In racemes, or resembling a 

 raceme. 



Rachilla. The axis of the spikelet in 

 grasses. 



Rachis. The axis of a compound leaf, or 



of a spike or raceme. 

 Radially. Spreading from a common 



center. 



