1114 APPENDIX. 
PrepaTE. Palmately divided with the lateral divisions again two-cleft. 
Pxpicet. The stalk supporting a single flower in a compound inflorescence. 
PEDICELLATE. Borne on a pedicel. 
Prepuncie. A general or primary flower-stalk, bearing one or many flowers. 
PEDUNCULATE. Furnished with a peduncle. 
PxtraTe. Shield-shaped; flat and attached to its support by the centre of the lower 
surface. 
PENCILLED. Marked with fine lines. 
PreNDuLovs. Hanging downwards. 
PENICILLATE. Divided into a brush of fine hairs. 
PERENNIAL. A plant that lives for several years. 
PeRFEcT. Applied to flowers that have both stamens and pistil. 
PERFOLIATE. Applied to leaves the base of which closes round the stem, which thus 
appears to pass through the leaf. 
PERIANTH. The floral envelopes, either the calyx or corolla, or both. 
PERICARP. ‘The seed-vessel or ripened ovary. 
PERIGYNIUM. The flask-shaped utricle of Carex and Uncinia, including the true fruit. 
PERIGYNOUS. Inserted round the ovary, but more or less adnate to the perianth. 
PERSISTENT. Not falling off; remaining attached to its support. 
PERSONATE. Applied to a bilabiate corolla having a prominent palate almost or entirely 
closing the throat. 
PETAL. One of the separate parts of a polypetalous corolla. 
PETALOID. Having the colowr and texture of a petal. 
PETIOLATE. Possessing a petiole or foot-stalk. 
PETIOLE. The foot-stalk of a leaf. 
PETIOLULE. The foot-stalk or petiole of a leaflet, or separate division of a compound 
leaf. 
PHAENOGAM, PHANEROGAM. Applied to plants bearing manifest flowers, containing 
stamens or pistils, or both. 
PHYLLODE. Applied to a petiole when it assumes the shape and functions of a leaf, as 
in many Australian species of Acacia. 
PHYLLOTAXIS. The mode in which leaves are arranged on the stems or branches. 
PILIFEROUS. Bearing hairs or tipped with hairs. 
Prose. Furnished with rather long and soft distinct hairs. 
PrnnA. One of the primary divisions of a pinnate or compound leat. 
PInNATE. Applied to a compound leaf which has its leaflets arranged along both sides 
of a common rhachis or midrib. 
PINNATELY. In a pinnate manner. 
PINNATIFID. Pinnately cleft ; applied to a leaf which is divided half-way to the midrib 
or more into lobes or segments placed somewhat similarly to the lateral divisions 
of a feather. 
PINNATISECT. Pinnately divided down to the midrib or rhachis. 
PINNULE. A secondary pinna—that is, one of the pinnate or ultimate divisions of a 
pinna. 
PIstFORM. Resembling a pea in size and shape. | 
Pistm. The female organ of flowering plants, consisting, when complete, of ovary, 
style, and stigma. 
PISTILLATE. Applied to flowers having a pistil but no stamens; a female flower. 
Pirrep. Marked with small depressions or pits; punctate. 
Pracenta. That part of the ovary which bears the ovules or young seeds, often con- 
sisting of the margins of the carpellary leaves. 
PLANE. Having a flat surface. 
PLANO-CONVEX. Plane or flat on one side and convex on the other. 
PuicaTE. Folded lengthwise into plaits like those of a fan. 
PiuMosE. Plume-like; having fine hairs on each side like those of a feather, as in the 
pappus of some Com~positae. 
Pop. A dry many-seeded dehiscent fruit, usually of cruciferous or leguminous plants. 
PoLLEN. The fine powdery contents of the anther in flowering plants, by whose action 
when placed on the stigma the fertilization of the ovules is accomplished. 
PottinatTion. ‘The placing of the pollen on the stigmatic surface of the pistil. 
Pottintum. A mass of pollen-grains compacted together, as in Orchideae. 
PoLYADELPHOUS. Having the stamens arranged in several bundles or sets. 
PoLyanpRovus. Applied to flowers which have many stamens in each flower. 
Potyeamous. Having both perfect and unisexual flowers on the same plant. 
Potyeonous. Having many angles. 
PoLYMoRPHOUS, PoLyMorPHic. Assuming many forms ; variable in form or habit. 
