GLOSSARY. 



419 



at the apex of the achenes in 



the Compositse. 

 parasitic, Hving on another plant 



or animal. 

 parietal, attached to the walls 



of the ovary. 

 pectinate, pinnatifid into narrow 



divisions, like the teeth of a 



comb. 

 pedate, like a bird's foot. 

 pedicel, the stalk of each flower 



in a cluster. 

 pedicellate, pedicelled. 

 peduncle, a flower-stalk, whether 



of a single flower or of a 



cluster. 

 peltate, shield-shaped. 

 pepo, a fruit like the melon. 

 perennial, lasting from year to 



year. 

 perfect, having both stamens and 



pistil. 

 perianth, the floral leaves — the 



calyx and corolla. 

 perigynium, bodies around a 



pistil; see page 66, 

 perigynous, the petals and sta- 

 mens borne on the calyx. 

 personate, masked; a bilabiate 



flower with a palate in the 



throat. 

 petal, a leaf of the corolla. 

 petaloid, petal-like. 

 petiole, a stalk of a leaf. 

 petiolulate, a stalked leaflet. 

 pilose, clothed with long slender 



hairs. 

 pinnate, with leaflets arranged 



along the side of a common 



petiole. 

 pi7inatifid, same as pinnately 



cleft or divided. 

 pistil, the seed-bearing organ 



of a flower. 

 pistillate, having a pistil. 

 placenta, the part of the ovary 



to which the ovules are 



attached. 

 plaited, folded lengthwise. 

 plumose, feathery, 

 pollen, the fertilizing powder 



contained in the anthers; the 



microspores. 



polygamous, having some perfect 

 and some unisexual flowers. 



pome, a fleshy fruit, such as the 

 apple and pear. 



posterior, portion of a flower is 

 that toward the axis. 



primordial, earliest formed. 



procumbent, trailing on the 

 ground. 



proliferous, where a new branch 

 rises out of an older one, or 

 one cluster of flowers out of 

 another. 



prostrate, lying flat on the 

 ground. 



pruinose, frosted. 



puberulent, with fine short pubes- 

 cence. 



pubescent, with fine soft hairs. 



piinctate, dotted with minute 

 holes. 



puncticulate, minutely punctate. 



pungent, prickly-pointed. 



pyriform, pear-shaped. 



raceme, with 1 -flowered pedicels 

 arranged along a common 

 peduncle. 



racemose, bearing racemes. 



rachis, the axis, especially of a 

 spike. 



receptacle, the axis or support 

 of a flower. 



regular, all the parts of a circle 

 similar in shape. 



reniform, kidney-shaped. 



repand, wavy-margined. 



reticulated, netted. 



retuse, with a blunt somewhat 

 indented apex. 



revolute, rolled back. 



rootstock, root-like, usually un- 

 derground stems. 



rosulate, in a rosette. 



rotate, wheel-shaped. 



rugose, wrinkled. 



runcinate, coarsely saw-toothed. 



runner, a slender prostrate 

 branch rooting at the ends or 

 joints. 



saccate, sac-shaped. 

 sagittate, arrow-shaped, 



