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solid ; or, shaped like a section through an egg lengthways, 
when the terni is applied to the form of a surface. 
Ovules. The young seeds as they appear in the ovary 
at the time of flowering. 
Panicle. Where a bunch of flowers is composed of nume- 
rous branches of various lengths, each bearing a flower. 
Papilionaceous. The flowers of the Pea-tribe, which hâve 
a fanciful resemblance to a butterfly. 
Pedicel. The stalk or branch which supports a single 
flower of the general inflorescence. 
Peduncle. The stalk bearing the flowers, each of which 
may hâve its subordinate stalk or pedicel. 
Pettate. Where a stalk (as to the leaf) is perpendicular 
» to the plane expansion which it supports. 
Perianth. The whorls which surround the stamens and 
pistils. See Floral Whorls. 
Persistent. Continuing when other contiguous parts decay. 
Petals. The subordinate parts of the corolla. See 
Floral Whorls. 
Pinnate. Where a compound leaf is made up of subor¬ 
dinate parts or leaflets, which are ranged on each side of a 
common stalk or petiole. There may be an odd leaflet at 
the extremity or not ; and the leaflets may be exactly oppo¬ 
site to each other in pairs, or not. 
Pistil. See Floral Whorls. 
Pollen. Fine powder contained in the anther, essential 
to the fertilization of the ovule. 
Rhizoma. An underground stem, usually called a creep- 
ing root. It is easily distinguished from a true root, by its 
bearing scales, leaves, flower-stalks on the upper side, and 
sending out fibrous roots at intervals. 
