404 



GLOSSARY. 



with sometimes (usually) an inter- 

 yening style. 



Pistillate, furnished with pistils ; 

 generally applied to unisexual 

 flowers. 



Pitcher-shaped, tubular, bulging be- 

 low and contracted towards the 

 orifice. 



Pith, the central column of cellular 

 tissue, in the stems and branches 

 of exogenous plants. 



Placenta, that part of the ovary 

 which supports the ovules. 



Plaited, plicate, or folded longitudi- 

 nally. 



Plicate, folded together in regularly 

 disposed longitudinal plaits. 



Plumose, applied to hairs invested 

 with branches, arranged like the 

 beard on a feather. 



Pod, a two-valved seed-vessel, one- 

 celled as in the legume or pod of 

 the pea, and two-celled as in the 

 silique of the wall -flower. 



Pollen, the granular contents of an 

 anther, either free and resembhng 

 dust, or variously agglutinated 

 into waxy masses. 



Pollen-mass, an agglutinated mass 

 of pollen, such as occurs in Orchids. 



Polyadelphous, having the stamens 

 combined in several sets or bun- 

 dles. 



Polygamous, bearing on the same 

 plant three descriptions of flow- 

 ers ; viz., hermaphrodite, male, 

 and female. 



Polypetalons, having two or more 

 petals, and these perfectly distinct 

 from each other. 



Pome, a fleshy many-celled fruit, 

 matured from an inferior ovary. 



Pore, an aperture in the covering 



of any body, as in that of the an- 

 thers of heaths, which open by a 

 hole or aperture, instead of the 

 usual slit for the escape of the 

 pollen. 



Porose, having pores. 



Pouch, a little bag ; also the short 

 silicules of some Crucifers, as in 

 Alyssum. 



Prickle, a more or less conical eleva- 

 tion of the substance of the bark, 

 hard and sharp-pointed. 



Prismatical, approaching the form 

 of a prism, presenting angles dis- 

 posed longitudinally. 



Procumbent, lying upon or trailing 

 along the ground. 



Prostrate, procumbent. 



Pubescence, elevated extensions of 

 the cellular tissue of the epider- 

 mis, assuming the character of 

 soft downy hairs. 



Pubescent, furnished with pubes- 

 cence. 



Pulp, soft and juicy tissue. 



Quadrangular, approximating to 

 the form of a quadrangular 

 prism. 



Quaternate, Quaternary, having the 

 parts arranged by fours. 



Quinate, Quinary, having the parts 

 arranged by fives, as the five petals 

 of a buttercup, the five leaflets of 

 a digitate leaf, etc. 



Raceme, a form of inflorescence, 

 where the flowers are furnished 

 with pedicels arranged at intervals 

 upon a common axis. 



Racemose, arranged in racemes. 



Radiant, Radiate, arranged like 

 rays spreading from a common 

 centre. 



Radical, proceeding from a point 



