GLOSSARY. 349 



Nueide : the female organ of Characese. 



Numerous : indefinite. 



Nut : a hard indehiscent, mostly one-seeded fruit. 



06 (as a prefix) : reversely. 



Obcompressed : flattened opposite to laterally. 



ObcordcUe: broadly notched at the apex. 



Oblanceolate : lance-shaped, but tapering downwards. 



Oblong : much longer than broad, the two ends rounded. 



Obovate: ovate, with the broad end upwards. 



Obtuse: blunt. 



Ochrea: the sheathing stipule as in Polygonum. 



Ochreate : with ochreas or sheath-like stipules. 



Ochroleucous : yellowish-white. 



Octo (as a prefix) : eight. 



Officinal : having an approved use in medicine. 



Offset : branches at the ground which take root. 



Oligos (as a prefix) : few ; as oligandrous, few stamens. 



Oogonium : a large cell which is the female reproductive organ in 

 the Odsporese. 



Oosphere : a rounded mass of protoplasm within the oogonium. 



Oospore : the fertilized and ripened oosphere, having a cell-wall. 



Oosporece : the division of plants which are characterized by the 

 production of an oogonium. 



Open bundles : those fibro-vascular bundles which contain cam- 

 bium. 



Operculum : the lid of the capsule or theca of Mosses. 



Opposite : on opposite sides of the stem, (of stamens) in front of 

 petals, etc. 



Orbiculate, or Orbicular : in outline round, or nearly so. 



Orchidaceous : like an Orchid. 



Order : a group of allied genera. 



Organ : any part that has a special function to perform. 



Orthos (as a prefix) : straight. 



Orthotropous ovule : erect ; with the micropyle at the apex or opposite 

 the chalaza. 



Oval : broadly elliptical. 



Ovary : the lower part of the pistil which contains the ovules. 



Ovate : egg-shape, with the broad end downwards ; as ovate leaf. 



Omde : the body in the ovary which develops into the seed. 



Paki (Pale) : a chaflf or chaff-like bract, as in Composite flowers; 



that which corresponds to a sepal in the grass-flowers. 

 Palmate leaf: with the leaflets attached at the top of the petiole 



and spreading like the out-stretched fingers of the hands. 

 Panicle: an open cluster or compound raceme. 

 Papilionaceous : more or less butterfly-shaped ; the upper petal is 



called the Banner or Vexillum, the two side petals Alae, and 



the two anterior ones the Keel. 

 Papilla : a minute elevation. 



