lying flat on the ground, 39.

_Protandrous_ or _Proterandrous_, the anthers first maturing, 116.

_Proteranthous_, flowering before leafing.

_Proterogynous_ or _Protogynous_, the stigmas first to mature, 116.

_Prothallium_ or _Prothallus_, 160.

_Protoplasm_, the soft nitrogenous lining or contents, or living part,
of cells, 129.

_Protos_, Greek for first; in various compounds.

_Pruinose_, _Pruinate_, frosted; covered with a powder like hoar-frost.

_Pseudo-_, Greek for false. _Pseudo-bulb_, the aerial corms of epiphytic
Orchids, &c.

_Psilos_, Greek for bare or naked, used in many compounds.

_Pteridophyta_, _Pteridophytes_, 156.

_Pteris_, Greek for wing, and general name for Fern, enters into many
compounds.

_Puberulent_, covered with fine and short or almost imperceptible down.

_Pubescent_, hairy or downy, especially with fine and soft hairs or
_pubescence_.

_Pulverulent_ or _Pulveraceous_, as if dusted with fine powder.

_Pulvinate_, cushioned, or shaped like a cushion.

_Pumilus_, low or little.

_Punctate_, dotted, either with minute holes or what look as such.

_Puncticulate_, minutely punctate.

_Pungent_, prickly-tipped.

_Puniceous_, carmine-red.

_Purpureus_, originally red or crimson, more used for duller or
bluish-red.

_Pusillus_, weak and small, tiny.

_Putamen_, the stone of a drupe, or the shell of a nut, 120.

_Pygmaeus_, Latin for dwarf.

_Pyramidal_, shaped like a pyramid.

_Pyrene_, _Pyrena_, a seed-like nutlet or stone of a small drupe.

_Pyriform_, pear-shaped.

_Pyxidate_, furnished with a lid.

_Pyxis_, _Pyxidium_, a pod opening round horizontally by a lid, 124.

_Quadri-_, in words of Latin origin, four; as _Quadrangular_,
four-angled; _Quadrifoliate_, four-leaved; _Quadrifid_, four-cleft.
_Quaternate_ in fours.

_Quinate_, in fives. _Quinque_, five.

_Quincuncial_, in a quincunx; when the parts in aestivation are five, two
of them outside, two inside, and one half out and half in.

_Quintuple_, five-fold.

_Race_, a marked variety which may be perpetuated from seed, 176.

_Raceme_, a flower-cluster, with one-flowered pedicels arranged along
the sides of a general peduncle, 73.

_Racemose_, bearing racemes, or raceme-like.

_Rachis_, see _rhachis_.

_Radial_, belonging to the ray.

_Radiate_, or _Radiant_, furnished with ray-flowers, 94.

_Radiate-veined_, 52.

_Radical_, belonging to the root, or apparently coming from the root