The Trees of Vermont 237 



Pedicellate. Borne on a pedicel. 



Peduncle. A primary flower-stalk, supporting either a cluster or a solitary- 

 flower. 

 Pendent. Hanging downward. 

 Pendulous. More or less hanging or declined. 

 Perfect. Said of a flower with both stamens and pistil. Page 8. 

 Perianth. The calyx and corolla of a flower considered as a whole. 

 Periphery. Circumference. 

 Persistent. Long-continuous, as leaves through the winter, calyx on the fruit, 



etc. 

 Petal. One of the divisions of a corolla. Page 8. 

 Petiolate. Having a petiole. 

 Petiole. The stem or stalk of a leaf. 

 Petiolulate. Having a petiolule. 

 Petiolule. The stem or stalk of a leaflet. 

 Pilose. Hairy with long, soft hairs. 

 Pi7inate. Compound, with the leaflets arranged along both sides of a common 



petiole. 

 Pistil. The seed-bearing organ of a flower, normally consisting of ovary, 



style and stigma. Page 8. 

 Pistillate. Provided with a pistil, but usually without stamens. 

 Pit. A small hollow or depression, as in a cell-wall. Page 195, IX, a. 

 Pith. The softer central part of a twig or stem. Page 195, VIII, g. , 

 Pith flecks. Dark marks in timber due to the cavities made by the larvae 



of certain insects working in the cambium. 

 Pod. A dry and many-seeded, dehiscent fruit. 

 Pollen. The fecundating grains borne in the anther. 

 Polygamo-dioecious. Sometimes perfect, sometimes unisexual, both forms 



borne on different individuals. 

 Polygamo-monoecious. Sometimes perfect, sometimes unisexual, both forms 



borne on the same individual. 

 Polygamous. Sometimes perfect, sometimes unisexual, both forms borne on 



the same or on different individuals. 

 Pome. A fleshy fruit, as the apple. 

 Pore. Any small aperture; a name given to the large vessels or tracheids in 



hard woods. 

 Porous. Having large pores visible to the naked eye. See ring-porous and 



diffuse-porous. 

 Posterior. The back side of a flower, next to the axis of inflorescence. 

 Prickle. A small spine growing from the bark. 



Procumbent. Lying flat, with the long axis in a horizontal direction. 

 Protoplasm. The living matter of cells, into which all nourishment is taken 



and from which all parts are formed. 

 Puberulent. Minutely pubescent. 

 Puberulous. Minutely pubescent. 

 Pubescence. A covering of short, soft hairs. 

 Pubescent. Covered with short, soft hairs. 

 Punctate. Dotted with translucent or colored dots or pits. 



Raceme. A simple inflorescence of flowers on pedicels of equal length ar- 

 ranged on a common, elongated axis (rachis). Page 9. 



Racemose. Resembling a raceme. 



Rachis. The central axis of a spike or raceme of flowers or of a compound 

 leaf. 



Radial. Radiating, as from a center, i. e., as from the pith. 



Radial-section. A longitudinal-section of a body which passes through its 

 center, as the pith of a twig or log. Page 195, VIII, e. 



Ray. I. e., medullary ray. 



Ray cell. A cell of the medullary ray. 



Ray tracheid. A tracheid found in the medullary rays of some trees. 



Recurved. Curved downward or backward. 



Resin cell. A cell which secretes resin. 



Resin duct. A canal or opening between cells containing fluid resin. 



Reticulate. Netted. 



Rhombic. Equilateral, with the angles oblique. 



Ring. Meaning growth ring. 



