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. 



perigynous, 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. . j. 



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. 



pinnatifid, 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. 



pruinose, frosted. 



puberulent, with fine short pubes- 

 cence. 



pubescent, with flue soft hairs. 



punctate, dotted with minute holes. 



puncticulate, minutely punctate, 



jmngent, prickly- pointed. 



pyriform, pear-shaped, 



raceme, with 1-flowered pedicels ar- 

 ranged 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 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 or joints. 



saccate, sac-shaped. 



sagittate, arrow-shaped. 



salsuginous, 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, so ape- like. . 

 scarious, thin, dry and membranous. 

 scorpioid, 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. 

 sejjticidal, 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, 



