Appendix VI: Glossary. 
Pedicel. The footstalk or support of 
a flower. 
Pedicellate. Borne on a pedicel. 
Peduncle. A general or primary 
flower-stalk. 
Pedunculate. 
unele. 
Peltate. Shield-shaped; flat and atta- 
ched to its support by its lower 
surface. 
Furnished with a ped- 
Pendent. Hanging on its stalk or 
support. 
Pendulous. WHaging nearly inverted 
from its support; of ovules, more 
or less drooping, as distinct from 
suspended. 
Penicillate. 
fine hairs. 
Pepo. A cucurbitaceous fruit. 
Perennial. Persistent a series of 
years. 
Perfect. Of a flower, having both 
stamens and pistil. 
Perfoliate. Of leaves, connate about 
the stem. 
Perianth. The floral envelopes, i. e. 
the calyx and corolla, so far as 
present. 
Pericarp. The seed-vessel or ripened 
ovary. 
Perichoetium, The leafy involucre 
surrounding the archegonium and 
base of the pedicel in mosses. 
Perigynium. The sac-like envelope 
or the bristles or scales which in 
Cyperaceae represent the perianth. 
Perigynous. Surrounding the ovary 
but adnate to the perianth. 
Peristome. In mosses, the fringe of 
teeth or hairs at the orifice of the 
capsule. 
Persistent. Not falling off; of leaves, 
continuing through the winter. 
Personate. Used of a labiate corolla 
with prominent palates closing the 
throat. 
Petal. One of the parts of a poly- 
petalous or nearly divided corolla. 
Petaloid. Colored and resembling a 
petal. 
Petiolar. Borne upon or relating to 
a petiole. 
Petiole. The footstalk of a leaf. 
Petioled, Petiolate. Having a petiole. 
Petiolule. The footstalk of a leaflet. 
Resembling a brush of 
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Phaenogam. A phaenogamous plant, 
fructifying by means of stamens and 
pistils. 
Phanerogam. The same as Phaenogam., 
Phyllode. A leaf reduced to a simple 
petiole, which may be more or less 
dilated vertically. 
Piliferous. Bearing or tipped with 
hairs. 
Pilose. Hairy, usually with soft distinet 
hairs. 
Pinna. One of the principal divisions 
of a compoundly pinnate leaf. 
Pinnate. Having its parts arranged 
in pairs along a common rhachis. 
Pinnately. In a pinnate manner. 
Pinnatifid. Pinnately cleft into oppo- 
site nearly equal segments. 
| Pinnatisect. Pinnately divided down 
to the midrib. 
Pinnule. A secondary pinna, i. e. one 
of the pinnate divisions of a pinna, 
Pisiform. Resembling a pea in shape 
and size. 
Pistil. The female organ of a phae- 
nogam, consisting of the ovary with 
its styles and stigmas. 
Pistillate. Having a pistil and no 
stamens, as distinct from perfect or 
staminate. 
Pistilidium. See Archegonium. 
Pith. The soft and spongy central 
cellular part of a stem. 
Pitted. Marked with small depressions 
or pits. 
Placenta. That part of the ovary or 
fruit which bears the ovules and 
seeds. 
Plane. Having a flat surface. 
Plicate. Folded into plaits, like a fan. 
Plumose. Plume-like; having fine 
hairs on each side like a feather. 
Plumule. The bud or growing point 
of the embryo between the coty- 
ledons. 
Pluri-. In compound words, several; 
as plurifoliolate, with several leaflets, 
etc, 
Pod. A capsule, usually of cruci- 
ferous or leguminous plants. 
Pointless. Without a point, blunt. 
Pollen. The powdery or sometimes 
waxy contents of the anther. 
Poly-. In compound words, many; 
as polyandrous, haying many stems. 
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