GLOSSARY OF BOTANICAL TERMS. 



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Pyxidium. — The same as pyxis. 



Pyxis. — A capsule whose dehiscence is cir- 

 cumcissile, or which opens by a circular, 

 horizontal line, so that the upper part 

 comes off like a lid. 



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UADRIFOLIATE.— With four leaves. 



Quadrifoliolate. — With four leaflets; 

 applied to a compound leaf which has four 

 leaflets. 



Quinate. — Applied to a palmately com- 

 pound leaf with five leaflets. 



Quincuncial. — Applied to that form of 

 aestivation where there are five leaves, 

 two outside, two inside, and one with one 

 edge outside and the other inside. Also 

 five-ranked 



Quinquefoi.iolate. — Applied to any com- 

 pound leaf that has just five leaflets. 



Quinql'efoliate. — Five-leaved. 



Quinquelocular. — Applied to an organ 

 that has five loculi, as a five-celled ovary 



"DACEME. — That form of indeterminate 

 inPorescence in which the flowers are 

 pedicelled and arranged along a length- 

 ened axis. 



Racemose. — Arranged in a raceme. 



Rachis. — The axis oi inflorescence. 



Radical. — Belonging to the root. Radical 

 leaves are those which, like the leaves of 

 the Dandelion, appear to spring from the 

 root, but which in reality arise from a 

 very short stem at or near the surface of 

 the ground. 



Radicant. — Rooting. 



Radiciflorous. — With the flower ap- 

 parently springing immediately from the 

 root or underground parts. 



Radicle. — A little root. The term applied 

 to the primary root of the embryo. 



Radix. — The root. 



Radial. — Arranged in rays. A radial 

 fibro-vascular bundle is one which has 

 the xylem arranged in rays, with inter- 

 vening rays or masses of phloem. 



Radiate Venation.— That form of vena- 

 tion in which the main veins radiate from 

 the top of the petiole. 



Ra.meal, or Ramal. — Belonging to 

 branches. 



Ramenta. — A term applied to the pales or 

 chaffy hairs found on the stems and 

 petioles of many ferns. 



Ramose.— Branching. 



Ramilose. — Bearing numerous branchlets. 



Ramulus. — A branchlet, or small branch. 



Ramus. — A branch. 



Raphe. — (See rhaphe). 



Raphides. — Needle-like crystals found in 

 the cells of some plants. 



Receptacle. — The shortened stem on which 

 the floral organs are inserted. Also the 

 shortened axis of a flower-head. 



Reclinate. — Reclined or bent downward. 

 Applied to stems, branches, etc. Also 

 applied to that form of vernation in which 

 the apex of the leaf is bent downward 

 toward the base. 



Reduplicate. — Double-back. Applied to 

 to that form of valvate aestivation in which 

 the margins of the organs are turned out- 

 ward. 



Reflf.xed. — Bent outward or toward the 

 dorsal side. Used with reference to 

 leaves, petals, etc. 



Regma. — A term applied to a fruit like that 

 of the Geranium, in which the carpels 

 separate elastically from the base of the 

 carpophore. 



Rejuvenescence — Literally, the renewal of 

 youth. Applied to that mode of cell forma- 

 tion in which the whole of the protoplasm 

 escapes from the cell wall and forms a new 

 ceil. 



Reniform. — Kidney-shaped. 



Repand. — Applied to a leaf margin, which 

 is toothed like the margin of an um- 

 brella. 



Replicate. — That form of vernation in 

 which the apex of the leaf is bent back- 

 ward toward the base. 



Replum. — The septum of certain pods that 

 persists after the valves have fallen away. 



Repent. — Creeping, as of stems that creep 

 along the ground. 



Reticulate. — Netted. Applied to vena- 

 tion, the surface markings of organs, etc 



Retuse. — Applied to a leaf or other flat- 

 tened organ that has a broad, shallow 

 sinus at the apex. 

 Revolute. — That form of vernation or sesti- 

 vation in which the margins of the organ 

 are rolled backward. 

 Rhachis. — (See rachis). 

 Rhaphe, or Raphe. — The adherent portion 

 of the funiculus in amphitropous and 

 anatropous ovules. 



Rhizocarpous. — A term sometimes applied 

 to herbaceous plants whose roots live on 

 from year to year. 



