APPEXDIX C. 



723 



Awn. The beard or bristle of grasses. 



Bark. Tlio external layer of woody plants, the inner portion of wliich is 



known as the lihor or fibrous layer. 

 Basidia. Hounded cells in Fungi, which terminate in sterigmata, which 



snpjjort the spores. Basidia may be either external or 

 inclosed. 

 Basifixcd. An atither when attached to the filament by its base. 



Bracts. Altered leaves, whence the ilower axes spring. 



Calycoid. A dichlaniydeous Hower, when both whorls are green or foliaceous. 



Calycule. llracts simnlating an accessory calyx. 



Calyx. The outer or lower whorl of ihc flower. 



Calyx-tube. The receptacnlar cup enveloping the carpels. 



Capsule. A syncarpous fruit. 



Carpel. One of the floral leaves constituting the pistil, and on the edges of 



which the ovules are developed. 

 Caryopsis. A dry indchiscent fruit with a single seed adhering to the pericarp, 



as rice, wheat, maize, etc. 

 Catkin. A spica, in which the flowers are incomplete, wanting either 



diimcn or pinlil. 

 Caudex. ' The rliizome of an acrogen when enveloped by fronds. The stem 



of a tree-fern. 

 Cambium. The growing layer, in Exogenous woody plants, interposed between 



the bark ami the wood, and which is structurally related to 

 both, the cambium layer of one year becoming the annual ring 

 of wood in the next. 

 Campanulatc. riell-sbaped. 



Carpel. A leaf of the central or last whorl of the flower forming the pistil, 



and which bears on its edge the ovules. 

 Cellulose. An insoluble substance, the common basis of the cell-walls, fibres, 



vessels, and wood. 

 Chalaza. The thickened or discoloured part of the seed marking the place 



where the nutrient jnices penetrate the internal coat. 

 Chlorophyll. The vegetable sul)stanee to which the green colour of plants 



is due. 

 Clavate. Club-shaped. 



Clinodc. The fructiferous layer on the inner wall of a conccpiadc in Fungi, 



analogous to the llginoiium. 

 Circinato. Curhul round. 



Circumsciss. A capsule is so, when it dehisces transversely, as though fitted 



with a lid. 

 Conccptaclo. A closed spore-bearing cavity. 



Cone. A. catkin shielded by thick scales, usually woody, but occasionally 



membranous, as in the bop. 

 Conidia. Simple cells in Fungi, probably connected with the reproductive 



functi(m. 

 Cortina. In fungi the membranous veil, extending from the margin of the 



pileus, and protecting, when young, the organ of fructification, 

 as in the common mushroom. 

 Corolla. The inner wliorl next to the calyx. 



Corpusculo. A microscopic cell-like body in either animals or plants. 



Corymb. A raceme of which the lower pedicels are so long that the flowers 



aro nearly on a level. In the Stock the inflorescence is at 

 fijst a corymh, changing to a raceme as the primary axis 

 lengthens. 

 Cotyledon. The leaf of the emhrrjo. 



Culm. The stem of the Gramineai. 



Cyme. In a cj'me the primaiy axis terminates in a flower, and the flower- 



pedicels are nearly equal in length. 



