VOCABULARY. 



427 



Physiol'ogtj. Derived from the Greek, a\Pseudo. When prefixed to a word, it ira- 



discourse of Nature. 



Pkvtol'otni. The science which treats of Pubes'cent. Hairy, downy, or woolly, 

 the organization of vegetables, nearly D ~ 7 ~ rphQ """" -ii"ir ihot an 



synonymous with the physiology of 



vegetables. 



Pi'leus. The hat of a fungus. 

 Pillar. See Colurnella and Column. 

 Pilose. Hairy, with distinct straitish hairs. 

 Pilus. A hair. 

 Pimpled. See Papillose. 

 Pinna. 



See Papillose. 

 A wing feather, applied to leafets. 



Pinnate. A leaf is pinnate when the leaf- 

 ets are arranged in two rows on the side 

 of a common petiole, as in the rose. 



Pinnat'ifid. Cut in a pinnate manner. It 

 differs from pinnate, in being a simple 

 leaf deeply parted, while pinnate is a 

 compound of distinct leafets. 



Pistil. The central organ of most flow 

 ers, consisting of the germ, style, and 

 stigma. 



Pis'tillate. Having pistils but no stamens 



Pith. The spongy substance in the centre 

 of the stems and roots of most plants 

 See Medulla. 



Plaited. Folded like a fan. 



Plane. Flat with an even surface. 



Plica' tus. See Plaited. 



Plumo'se. Feather-like. 



Plu'mula or Plume. The ascending part 

 of a plant at its first germination. 



Plu'rimus. Very many. 



Pod. A dry seed vessel, not pulpy, mos* 

 commonly applied to legumes and sili- 



Pulp. The juicy cellular substance of 



berries and other fruits. 

 Pulver'ulent. Turning to dust. 

 ^u'milus. Small, low. 

 Punctate. Appearing dotted as if pricked. 



See Perforated. 



ungent. Sharp, acrid, piercing. 



urpu'reus. Purple. 



ques. 

 Po'dosperm. (From podos 



a part, anc 



spcrma, seed.) Pedicel of the seed. 

 Pointal. A name sometimes used for 



pistil. 

 Pollen. Properly fine flour, or the dus 



that flies in a mill. 



11UU1, 



The d 



ust which is 



contained within the anthers. 

 Po'lus. Many. 

 Polyan'drous. Having many stamens in 



serted upon the receptacle 



Polygamous. Having some flowers which Ramus. A branch. 



are perfect, and others with stamen 



only, or pistils only. 

 Polymorphous . Changeable, 



many forms. 



Polypet'alous. Having many petals. 

 Polyphyl'lous. Having many leaves. 

 Pome. A pulpy fruit, containing capsule 



as the apple. 

 Porous. Full of holes. 



Pramorse. Ending bluntly, as if bitten off 



plies obsolete or false. 



Pusil'lus. 

 Puta'men. 



Diminutive, low. 

 A hard shell. 



Pyx'ide. (From puxis, a box.) Name of 

 one of MirbePs genera of fruit. 



a. 



Quadran'gular. Having four corners or 



angles. 



Quarter'natc. Four together. 

 Quinate. Five together. 



R. 



Raceme. (From raz, a bunch of grapes, 

 a cluster.) That kind of inflorescence in 

 which the flowers are arranged by sim- 

 ple pedicels on the sides of a common 

 peduncle; as the currant. 



Ra'chis. The common stalk to which the 

 florets and spikelets of grasses are at- 

 tached : as in wheat heads. Also the 

 midrib of some leaves and fronds. 



Ra'diate. The ligulate florets around the 

 margin of a compound flower. 



Ra'dix. A root ; the lower part of the 

 plant which performs the office of at- 

 tracting moisture from the soil, and com- 

 municating it to the other parts of the 

 plant. 



Rad'ical. Growing from the root. 



The part of the corculum which 



afterwards forms the root ; also the mi- 

 nute fibres of a root. 



Ramiferous. Producing branches. 



Ray. The outer margin of compound 



flowers. 



assuming Recep'tacle. The end of a flower stalk ; 

 the base to which the different parts of 

 fructification are usually attached. 



Recli'ned. Bending over with the end In- 

 clining towards the ground. 



Rectus. Straight. 



Recurv'ed. Curved backwards. 



Reflex' ed. Bent backwards, more than re- 



the same as abrupt. curved. 



Pras'inus. Green, like a leek. Reg'mate. (From rcgma, to break with 



Praten'sis. Growing in meadow land. an explosion.) Name of one of Mirbel's 

 Prickle. Differs from the thorn in being genera of fruits. 



fixed to the bark, the thorn is fixed to Refrig' 'erant. * (From rcfrigero, to cool.) 



the wood. 

 Prismat'ic. 

 sides. 



Cooling medicines. 

 Having several parallel flat Rc'niform. Kidney-shaped, heart-shaped 

 without the point. 



is. An elongated nose or snout, 

 applied to projecting parts of vegetables 



Process. A projecting part. 



Procum'bent. Lying cm the ground. 



Proliferous. A flower is said to be pro- 

 liti'ious when it has smaller ones grow- 

 ing out of it. 



Prop. Tendrils and other climbers. 



Prox'imus. Near. 



Repand. Slightly serpentine, or waving 



on the edge. 

 Repens. Creeping. 

 Rcsu'pinatc. Upside down. 

 Retic'ulate. Veins crossing each other 



like net work. 

 Retuse. Having a slight notch In the end, 



less than emarginate. 

 Rever'sed. Bent back towards the base. 



