Glossary 



457 



perennial, lasting from year to year. 



perfect, having both stamens and pis- 

 til. 



perianth, the floral leaves the calyx 

 and corolla. 



perigynium, bodies around a pistil; 

 see page 73. 



pcrigynous, the petals and stamens 

 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. 



pinnatifld, 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 -con- 

 tained in the anthers ; the micro- 

 spores. 



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. 



pr ui nose, frosted. 



puberulent, with fine short pubes- 

 cence. 



pubescent, with fine soft hairs. 



punctate, dotted with minute holes. 



puncticulate, minutely punctate. 



pungent, prickly pointed, 



pyriform, pear-shaped. 



raceme, with 1-flowered pedicels ar- 

 ranged along a common peduncle. 



racemose, bearing racemes. 



rac fit's, the axis, especially of a spike. 



receptacle, the axis or support of a 

 flower. 



regular, all the parts of a circle simi- 

 lar in shape. 



reniform, kidney-shaped, 



repand, wavy-margined. 



reticulated, netted. 



retuse, with a blunt somewhat in- 

 dented apex. 



revolute, rolled back. 



rootstock, root like, usually under- 

 ground stems. 



rosulate, in a rosette. 



rotate, wheel-shaped. 



rugose, wrinkled. 



runcinate, coarsely saw- toothed. 



runner, a slender prostrate branch 

 rooting at the ends o.r joints. 



saccate, sac-shaped. 



sagittate, arrow-shaped. 



salmginous, growing in brackish 



places. 

 salver-shaped, with a border spreading 



at right angles to a slender tube, 

 samara, a winged fruit or key. 

 scabrous, rough or harsh to the touch. 

 scape, a peduncle rising from the 



ground or near it. 

 scapiform, scape-like. 

 scarious, thin, dry and membranous. 

 scor2)ioid, curved or circinate at the 



end. 



scrobiculate, pitted. 

 scuttelate, saucer-shaped. 

 secund, 1-sided. 

 segment, a subdivision or lobe. 

 sepal, a leaf or division of the calyx. 

 septate, divided by partitions. 

 seirticidal, where the dehiscence is 



through the partitions. 

 serrate, the margin cut into teeth 



pointing upward; saw-toothed. 

 serrulate, minutely serrate. 

 sessile, not stalked. 

 seta, a bristle, or bristle-like, 

 setaceous, bristle-like. 



