GLOSSARY 



245 



Pediceled. With a pedicel. 

 Peduncle. A flower stalk, whether of 



a single flower or of a flower cluster. 

 Peduncled. With a peduncle. 

 Peltate. Shield-shaped; applied to a 



leaf, whatever its shape, when the 



petiole arises from the under surface. 

 Pendulous. Somewhat hanging or 



drooping. 

 Penta-. 5. 



Perennial. Lasting from year to year. 

 Perfect (flower). Having both sta- 

 mens and pistils. 

 Perfoliate. Applied to a leaf through 



whose base the stem appears to 



pass. 

 Perianth. The floral envelopes of the 



flower, especially when calyx and 



corolla cannot be distinguished. 

 Pericarp. The wall of the ripened 



ovary, which in many cases is the 



wall of the fruit. 

 Perigynium. The inflated sac which 



incloses the ovary in Carex. 

 Perigynous (flower). Sepals and 



petals and stamens arising from the 



rim of a tube or cup surrounding the 



pistil or pistils. 

 Persistent. Remaining beyond the 



period when such parts commonly 



fall. 



Petal. A corolla leaf. 

 Petiole. The leafstalk. 

 Petioled = Petiolate. With a petiole. 

 Petiolulate. With a petiolule. 

 Petiolule. The stalk of a leaflet. 

 Pilose. Hairy with soft slender hairs. 

 Pinnate (leaf). Leaflets along the 



main axis of the leaf. 

 Pinnately lobed, cleft, parted, divided, 



etc. The varying depths of division 



of a pinnately veined leaf. 

 Pinnately -veined. With secondary 



veins arising from a mid-vein. 

 Pinnatifid. Pinnately cleft. 

 Pistil. The seed-bearing organ of the 



flower. 

 Pitted. Having small depressions or 



pits on the surface. 



Placenta. The surface of the ovary 

 to which the ovules are attached. 



Plicate. Folded lengthwise into plaits. 



Plumose. Feathery; when any slen- 

 der body is beset with hairs. 



Pluri-. Several, or many. 



Pod. Any sort of capsule. 



Poly-. Many. 



Polygamous. Having some perfect 

 and some staminate and pistillate 

 flowers on the same or on different 

 individuals. 



Polymorphous. Of several forms. 



Polypetalous. With the petals dis- 

 tinct. 



Polysepalous. When the sepals are 

 distinct. 



Pome. A fleshy apple-like fruit, e.g., 

 apple, pear, haw. 



Procumbent. Trailing on the ground. 



Produced. Extended or projecting 

 farther than usual. 



Proliferous. A new branch arising 

 from an older one, or one head or 

 cluster of flowers from another. 



Prostrate. Lying flat on the ground. 



Pruinose. Covered with a powder 

 resembling hoarfrost. 



Puberulent. Covered with almost im- 

 perceptible fine and short down. 



Pubescence. Fine and soft hairs. 



Pubescent. With pubescence. 



Punctate. Dotted, either with minute 

 holes or apparently so. 



Raceme. A flower cluster with one- 

 flowered pedicels along the axis of 

 inflorescence. 



Racemose. Bearing racemes; or 

 raceme-like. 



Rachilla. The axis of a spikelet. 



Rachis. An axis bearing close-set 

 organs; specially the axis of a 

 spike. 



Radiate. Furnished with ray flowers. 



Radical. Belonging to the root, or ap- 

 parently coming from the root. 



Ray. The marginal flower of a head 

 or cluster when different from the 



