Having both perfect 
flowers upon the 
Polygamous. 
and unisexual 
same plant. 
| 
| 
! 
| 
Polymorphous. Of many forms; vari- | 
able in form. 
Polypetalous. Having distinkt petals. | 
Pome. A fleshy fruit, like the apple, | 
enclosing several parchment-like or 
bony carpels. 
Posterior. In an axillary flower, the 
side toward the axis and away from | 
the bract 
Praemorse. ‘Terminating abruptly, as 
if bitten off. 
Prickle. A small spine, an outgrowth 
of the bark or cuticle. 
Process. Any projecting appendage; 
in mosses, the inner teeth or cilia 
of the peristome. 
Procumbent. Lying upon the ground. | 
Produced. Extended or prolonged. 
Proliferous. Producing offshoots. 
Prosenchymatous. Formed of more 
or less elongated tubular cells placed 
end to end. 
Prostrate. lying flat on the ground. 
Prothallus. In the higher eryptogams, | 
the immediate frondaceous or fila- 
mentose product of the germination | 
of the spore, upon which are | 
developed sexual organs or new 
plants. 
Pruinose. Covered with a minute 
bloom or powder. 
Pseudopodium. The stalk supporting 
the capsule in Sphagnaceae. 
Puberulent. Very minutely pubescent. | 
Pubescent. Covered with hairs, usually 
short and soft. 
Pulverulent. Dusty, as if covered 
with a minute powder. 
Pulvinate. Cushion-shaped; growing 
in thick mats or cushions. 
Punctate. Dotted with minute de- 
pressions, or with translucent inter- 
nal glands or colored dots. 
Puncticulate. Very minutely pune- 
tate. 
Pungent. Terminating in a rigid and 
stout sharp point or prickle. 
Pustular. Having low elevations, like 
small blisters. 
Putamen. The bony or crustaceous 
shell inclosing the seed of a 
drupe. 
Appendix VI: Glossary. 
Pyramidal. Shaped like a pyramid; 
narrowing to an apex from an 
angular base. 
Pyriform. Pear-shaped. 
Quadrangular. 
or corners. 
Quadrate. Square in form. 
Quadriferous. Arranged in four verti- 
cal rows or ranks, as the leaves of 
many species of Veronica. 
Having four angles 
Raceme. A form of inflorescence 
with pedicellate flowers upon a 
simple prolonged axis, the flowers 
developing from below upward. 
Racemose. In racemes, or resembling 
a raceme. 
Radial. Belonging to the ray of a 
compound flower. 
Radiate. Diverging from a common 
centre; bearing ray flowers. 
Radical. Belonging to or proceeding 
from the root, or from the base of 
the stem. 
Radicle. That part of the embryo below 
the cotyledons, its stem-portion and 
the primal internode, developing 
the root from its lower extremity. 
Radiculose. Bearing rootlets or 
rhizoids. 
Rameal. Belonging to a branch. 
Ramose. Branching. 
Ramulose. Bearing branchlets. 
Ray. One of the radiating branches 
of an umbel; the marginal flowers, 
as distinct from the disk, of a 
compound flower, umbel, ete. 
Receptacle. A more or less expanded 
or produced surface forming a 
common support for a cluster of 
organs (in a flower) or a cluster 
of flowers (in a head), ete. 
Reclinate, Reclining. With an erect 
or ascending base, the upper part 
recurved and trailing. 
Rectangular. Of an oblong right- 
angled figure. 
Recurved. Curved backward or down- 
ward. 
Reflexed. Bent abruptly down or 
backward. 
Refracted. Reflexed from the base. 
Regwar. Symmetrical in form; uniform 
in shape or structure. 
