GLOSSARY 



Pistil. (L. pistillum, a pestle ; pistus, p.p. of 

 pisto, to pound.) The inner whorl of floral 

 organs, usually divided into ovary, style and 

 stigma. So called from its likeness to the 

 pestle of a mortar. (Plate VI., Fig. E.) 



Pistillate. A flower having a pistil, but no 

 stamens. (Plate LXI.) 



Placenta. (L. placenta, a cake ; akin to Gr. 

 plakous, a flat cake, from flax, plalcos, any- 

 thing flat or broad.) The part of the ovary 

 to which the ovules are attached. (Plate 

 XX VIII., Fig. E.) 



Pollen. (L. pollen, fine flour, mill-dust.) The 

 microscopic dust within the anthers. 



Pollination. The transference of pollen to the 

 stigma of a flower, especially by the aid of 

 insects or other external agents. 



Polyadelphous. (Gr. polys, many ; adelphos, a. 

 brother.) The cohesion of the stamens into 

 several bundles. 



Polygamous. (Gr. polygamos ; j/olys, many ; 

 gamos, marriage.) Having male, female, and 

 hermaphrodite flowers. 



Polypetalous. (Gr. polys, many ; petalon, a leaf. ) 

 A corolla having the petals separate one 

 from another. 



Polysepalous. (Gr. polys, many ; L.L. sepalum, 

 a sepal ; separattts, separate.) A cnlyx in 

 which the sepals are distinct one from the 

 other. 



Pome. (L. pomum, an apple.) A pseudocarp or 

 spurious fruit in which the calyx-tube or 

 receptacle has grown up and surrounded the 

 pistil, in which case the core is the true 

 fruit. (Plate III., Figs. 23-25.) 



Procumbent. (L. procumbens, pr.p. of procumbo, 

 I bend forward ; pro, forward ; cubare, to 

 lie down.) Trailing; without putting out 

 roots. 



Prostrate. (L. prostratus, p.p. of prostenio, 

 prostratvm, I lay flat; pro, before; sterna, 1 

 strew.) Flung on the ground. 



Proterandrous. (Gr. proteros, first ; oner, a man.) 

 Perfect flowers in which the anthers are 

 mature before the stigma is ready to receive 

 the pollen. 



Proterogynous. (Gr. proteros, first ; gyne, a 

 woman.) Perfect flowers in which the pistil 

 is mature before the anthers have ripened. 



Pruinose. (L. pruinosus; pruina, hoar frost.) 

 Having a waxy bloom. 



Pseudocarp. Gr. pseudes, false ; karpos,& fruit.) 



X 



A fruit in which some part of the flower is 

 attached to the ovary. 



Puberulent. (L. pubes, puber, downy ; pubes, the 

 beard.) Having very fine downy hairs. 



Puberulous. L. pubes, puber, downy, pubescent.) 

 Minutely pubescent. 



Pubescent. (L. pubes, puber, downy.) Softly 

 hairy. 



Pyriform. (L. pirum, a pear ; forma, form.) 

 Pear-shaped. 



Raceme. (L. raeemus, a bunch.) An indefinite 

 inflorescence in which the flowers are con- 

 nected with the peduncle by pedicels. (Plate 

 II, Fig. A.) 



Receptacle. (L. receptaeulum, a receiving vessel 

 or cavity ; receptus, p.p. of reeipio ; re, back ; 

 capio, I take. ) A multicellular organ bearing 

 spores. The upper portion of the flower-stalk 

 upon which the floral leaves are fixed. 



Refiexed. (L. reflexus, p.p. of reflect o ; re, back ; 

 tlectere, to bend.) Turned back on its inser- 

 tion. 



Regma. (G. rhegma, a fracture; rhegnymi, to 

 break.) A fruit which breaks up into one- 

 seeded dehiscent parts called cocci.) 



Regular. (L. regularis ; regula, a rule ; regere, to 

 rule.) Having petals alike in general form. 



Reniform. (L. renes, the kidneys ; forma, form) 

 = Kidney-shaped. A leaf rounded at the 

 apex and hollowed at the base. 



Repand. (L. repandus; re, back ; pandus, bent.) 

 Having the margin uneven, slightly sinuous. 



Reticulate. (L. reticulum, dim. of rete, a net.) 

 Nettled in appearance. 



Revolute. (L. revolutus, p.p. of revolvo ; re, back ; 

 volvere, to roll.) With margin rolled back. 



Rugose. (L. rutjosus, wrinkled ; ruga, a wrinkle.) 

 Wrinkled, corrugated. 



Saccate. (L. saccus, a bag.) Having sepals 

 swollen at the base. 



Salver-shaped. (L.L. salrare, to save = a plate 

 on which anything is presented.) A corolla 

 having a long tube with spreading lobes. 

 Also called Hypocrateriform. 



Samara. (L. samara, elm-seed.) A dry indehis- 

 cent, usually one-seeded, fruit, with a wing. 

 (Plate III, Figs. 10-13.) 



Scabrous. (L.L. scabrosus ; L. seedier ; scabo, I 

 scratch.) Rough to the touch, like a file. 



Scale leaves. Small hard leaves peculiar to the 

 Coniferre. 



Scarious. (O.F. escorcher, escorcer, to strip off 



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