16 APPENDIX. 
Perigynium, arranged around the pistil. 
Perigynous, when the petals and stamens are borne on the calyx. (Plate 55, fig. 2. 
Periphery, the outside of an organ. 
Persistent, remaining beyond the usual time. : 
Personate, the throat of a bilabiate corolla when masked by some projection (as seen in the 
flowers of plate 111). 
Petal, a leaf of the corolla; usually bright-colored. 
Petaloid, when any other organ is petal-like. 
Petiole, the stem of a leaf. 
Petioled, Petiolate, possessing a petiole. 
Petiolulate, said of leaflets when having their own petioles. * 
Phenogamous, Phenogams, Phenerogams, plants bearing flowers and producing seeds. 
Pilose, clothed with fine soft hairs. 
Pinna, the petiole of a pinnate leaf. 
Pinnule, a secondary pinna of a bipinnate leaf. 
Pinnate, feather-form; said of a compound leaf when its leaflets are arranged along the main 
petiole (as in plate 50). 
Pinnatifid, cut until partaking of the nature of a pinnate leaf. (Plate 96, fig. 4.) 
fistil, the female organs of a flower (usually central), taken as a whole (fig. 5, plate 130: 
the lowest’ portion is the receptacle; next above, the ovary; next, the style, and at the 
apex, the stigmas). 
Fistillate, said of a flower having pistils and no stamens. (Plate 33, fig. 4.) 
Pith, the central portion of exogenous stems. 
Pitted, having small depressions upon the surface. 
Placenta, that surface or part of an ovary to which the ovules are attached. (Plate 23, 
fig. 10.) 
Placentiferous, having the nature of a placenta, or having placentz. 
Piaited, arranged like a fan that admits of closure 
Plane, flat. 
_ Plicate, see Plaited. 
Plumose, feathery. (Plate 1, fig. 9.) 
Pluri-, in composition, several ; as 
Plurifoliate, many-leaved. 
Pod, any kind of capsule. (Plate 11, fig. 11; plate 22, fig. 7; plate 24, fig. 3; plate 132, fig. 3.) 
_ Pollen, the fertilizing agent of a plant, formed in the anther cells. It is varied in form, but 
usually granular. (Plate 107, fig. §; plate 1, fig. 7; plate 16, fig. 8; plate 22, fig. 9; 
plate 27, fig. 5; plate 47, fig. 5; plate 68, fig. 8; plate 83, fig. 8; plate 93, fig. 7; plate 
IOl, fig. 5; plate 163, fig. 11; plate 164, fig. 9; plate 167, fiz. 6; plate 103, fig. 5; plate 
--:105, fig. 6; plate 109, fig. 7; plate 169, fig. 10, and plate 175, fig. 4.) 
Pollen-mass, applied when the grains cohere into a mass. (Plate 135, fig. 4.) 
- 
. 
_ Paly-, many; in Greek derivatives ; mu/ti in Latin, as 
__ Polyadelphous, when stamens are united by their filaments. (Plate 50, fig. 2.) 
> Polyandrous, many-stamened, more than twenty. - 
Polygamous, having perfect and separate flowers upon the same plant. 
_ folygonal,many-angled. 
__ Polygynous, many-pistilled or -styled. 
__— Polymorphous, of varying forms, — | 
__ Polypetalous, when the petals are separate or distinct (whether few or many). Opposed to 
Seecmr ee ee | 
