Biternote. Said of leaves wherein the three main divisions are themselves divided 



into three parts. 

 Bladdery. Appearing as though inflated. 

 Blade. The lamina, or expanded part of a leaf (fig. 787). 

 Bloom. The white powder or dust covering stems, leaves, fruits or flowers. 

 Brackish. Said of water with a high concentration of dissolved substances, usually 



somewhat salty. 

 Bract. A reduced or modified leaf, particularly the scalelike leaves in a flower 



cluster. Also said of any bractlike emergence. 

 Bractiform. Having the form of a bract. 



Bractlct. A small bract, or sometimes applied to bracts in secondary positions. 

 Bristle. A stiff", sharp hair (fig. 786). 

 Bulk. A much shortened axis bearing fleshy leaf blades. 

 Bulhiferous. Bulb-bearing. 



Bulhlet. A small bulb, especially one borne in a leaf axil. 

 Bulhose, bulbous. Having bulbs or the character of a bulb. 

 Bullate. Blistered or puckered. 

 Bur. A fruit or fruiting involucre bearing prominent spines or hooks (figs. 57, 



741). 

 Bush. (Cf. shrub). 



Caducous. Falling off early or prematurely, as do the petals of Rhexia. 



Calcareous. Containing an excess of available calcium, usually in the form of the 

 compound calcium carbonate. "Limy". 



Caliche. A crust of calcium carbonate formed on stony soils in arid regions. 



Callus. A thick, leathery, or hardened protuberance, or part of an organ; new tis- 

 sue covering a wound (fig. 402) . 



Callous grain. Callus on perianth segments of Rumex. 



Calycine. Resembling a calyx; said of involucres or involucels. 



Calyculate. Having bracts around an involucre or calyx, these bracts resembling 

 an outer involucre or calyx, as in the common dandelion. 



Calyx. The outermost whorl of the floral envelopes, composed of separate or 

 united sepals; it may sometimes be petaloid. 



Campanulate. Bell-shaped. 



Campylotropous. (ovule or seed). So curved as to bring apex and base nearly to- 

 gether. 



Canaliculate. Longitudinally channeled or grooved. 



Cancellate. Latticed, or resembling lattice construction. 



Canescent. Gray-pubescent. 



Capillary. Hairlike, threadlike, very slender. 



Capitate. Aggregated into a dense, compact cluster or head. 



Capsule. A dry, dehiscent fruit originating from two or more carpels. 



Carinate. Provided with a longitudinal ridge on the lower, or abaxial, surface; 

 keeled. 



Carpel. One of the foliar units of which a pistil is composed. If one carpel forms 

 the pistil the latter is simple; if more than one, the pistil is compound. 



Carpophore. A prolongation of the floral axis between the carpels, as that which 

 supports the pendulous fruit of the Umbelliferae. 



Cartilaginous. Hard and tough. 



Caryopsis. An achene in which the pericarp is united with the seed; developed 

 from a superior, one-carpeled ovary (fig. 108). 



Catkin. A deciduous, erect or lax spike, consisting of unisexual, apetalous flowers 

 (fig. 788). 



1709 



