EUCAL YPTUS. 233 



Perigynous : the petals and stamens borne on the calyx. 



Peripherie : around the outside, or periphery, of an organ. 



Perispenn : a name for the albumen of a seed. 



Peristome : the fringe of teeth, etc., around the orifice of the capsule of 



Mosses. 

 Persistent: remaining beyond the period when such parts commonjy 



fall, as the leaves of evergreens, and the calyx, etc., of such flowers 



as remain during the growth of the fruit. 

 Personate: masked; a bilabiate corolla with a projection, or palate in 



the throat, as of the Snapdragon. 

 Petal: a leaf of the corolla. 



Petaloid : petal-like; resembling or colored like petals. 

 Petiole : a footstalk of a leaf. 

 Petiole d t Petiolate : furnished with a petiole. 



Petiolnlate : said of a leaflet when raised on its own partial leafstalk. 

 Phaenogamous, or Phanerogamous : plants bearing flowers and producing 



seeds; same as Flowering Plants. 

 Phyllodium ( plural phyllodia}: a leaf where the blade is a dilated petiole, 



as in New Holland Acacias. 



Phyllotaxis, or Phyllotaxy : the arrangement of leaves on the stem. 

 Phyton : a name used to designate the pieces which by their repetition 



make up a plant, theoretically, viz., a joint of stem with its leaf or 



pair of leaves. 



Piliferous : bearing a slender bristle or hair (pilum), or beset with hairs. 

 Pilose: hairy; clothed with soft slender hairs. 



Pinna : a primary branch of the petiole of a bipinnate or tri pinnate leaf. 

 Pinnule : a secondary branch of the petiole of a bipinnate or tripin- 



nate leaf. 



Pinnate (leaf): when the leaflets are arranged along the sides of a com- 

 mon petiole. 



Pinnatifid : same as pinnately cleft. 

 Pistil : the seed-bearing organ of the flower. 

 Pistillidium : the body which in Mosses, Liverworts, etc., answers to the 



pistil. 



Pith : the cellular centre of an exogenous stem. 



Pitted: having small depressions or pits on the surface, as many seeds. 

 Placenta : the surface or part of the ovary to which the ovules are 



attached. 



Plane : flat, outspread. 



Plumose : feathery; when any slender body (such as a bristle of a pap- 

 pus) is beset with hairs along its sides, like the plumes or the beard 



on a feather. 

 Plumule : the little bud or first shoot of a germinating plantlet above 



the cotyledons. 

 Pluri-, in composition; many or several; as 



