GLOSSARY OF BOTANICAL TERMS 



Persistent.— Lon^ continuous, applied to Ic-aves thai rt-inain on the tree 



over winter and to a calyx that remains until the Iruit ripens. 

 Petal.— (_)ne of tlie leaves of the corolla. 

 Peik-le. — Tilt sttm of a Itaf. 

 Pinna (pi. pinna-).— (Jnc (jf the primary divisions of a pinnately compound 



leaf. 

 PlNNAii:. — Ap[)licd (o conii>ound leaves where the leallets are arrani^ed on 



each side ol a common petiole. 

 PlSTIL.^The modified leaf or leaves which bear the ovules; usually con- 

 sisting of ovary, style and stigma. 

 Pistillate. — Applied to flowers that possess pistils liut not stamens. 

 Plicate. — Folded like a fan. 

 Plumule. — The [irimary bud of the embryo. 

 PdLLEX. — The fertilizing powder produced by the anther. 

 Polygamous. — Ajiplied to [>lants which pr<.>duce staminate, pistillate, and 



perfect Howers all on the same plant. 

 ProtoI'LAs^l — The living matter of the cell. 

 Pubescent, — Downy, covered with soft hairs. 

 Raceme. — A simple inflorescence of pedicelled flowers upon a common, more 



or less, elongated axis. 

 Rachis. — The axis of inflorescence. 

 Radicle. — The primary root of the embryo. 



Recettaclk. — The shortened stem on which the floral organs are inserted. 

 Reduplicate. — Doubled back. 



Reflexed. — Bent outward. . . ' 



Repand. — Leaf margin toothed like the niargin of an umbrella. 

 Re VOLUTE. — Rolled backward. 

 Rotate. — Pdat circular disk; applied to corollas. 



Samara. — An indehiscent dry fruit provided with a wingdike appendage. 

 Secund. — Flowers arranged along one side of a lengthened axis. 

 Sepal. — One of the leaves of the outer whorl of floral organs. 

 Serrate. — Toothed, with sharp teeth projecting forward. 

 Sinuate.— Wavy. 



Sinus. — The cleft between two lobes. 

 Si'ATULATE. — Resemljling a spatula in outline. 

 Spike. — A form of simple inflorescence in which the flowers are sessile or 



nearly so, borne upon a lengthened axis. The lower flowers bl<x>m 



first. 

 Si'RAV. — The ultimate division of a branch. 

 Stamen. ^The pollend)earing organ of the flower, usually consisting of 



fihrment anil aniher. 

 Stamen \ i I'.. — Apph'ed (o flowers wliicli ha\'e stamens l)ut not pistils. 

 Sterulnla. I'I. Sierlgmala. — Tlie woorly base upon which the leaves of 



man\' of thc"*evergreens aic borne. 

 Stigma. — That part of the pistil which receives the pollen. 



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