GLOSSARY OF BOTANICAL TERMS. 221 



DECLINATE, curving or pointing downwards. 

 DECOMPOUND, consisting of many parts repeatedly divided. 

 DECUMBENT, lying flat on the ground, and rising at the apex. 

 DECURRENT, leaves adhering to the stem by their whole base and 



prolonged downwards, forming a wing. 

 DECUSSATE, opposite leaves with the next pair crossing at right 



angles. 



DEFINITE, a terminal inflorescence ; stamens less than twenty. 

 DEFLEXED, curved downwards or bent back. 

 DEHISCENCE, the manner in which fruits open to disperse their 



seeds, also applied to the opening of the anther. 

 DELTOID, triangular in outline, as in the Greek letter A. 

 DENTATE, toothed, the margin of a leaf, having projections 



resembling teeth. 



DENTICULATE, having very fine teeth. 

 DEPRESSED, flattened from above downwards. 

 DETERMINATE, flowering from the centre to the circumference, 



centrifugal. 



DIADELPHOUS, stamens united by their filaments in two bundles. 

 DIALYPETALOUS, POLYPETALOUS, petals of a corolla not united. 

 DIAPHANOUS, pellucid, transparent. 



DICIILAMYDEOUS, having two coverings, calyx and corolla. 

 DICHOTOMOUS, dividing in pairs. 

 DICLINOUS, plants with unisexual flowers. 

 DICOTYLEDONOUS, an embryo with two opposite cotyledons. 

 DIDYMOUS, the union of two similar organs by a small portion of 



their margin. 



DIDYNAMIA, DIDYNAMOUS, two stamens long and two short. 

 DIFFUSE, widely spread. 



DIGITATE, fingered ; cut deeply in and arranged like a fan, meet- 

 ing at the top of the petiole, and all the parts distinct. 

 DIMEROUS, composed of two parts. 

 DIMIDIATE, split on one side. 



DIMORPHIC, two forms of flower produced by the same species. 

 DIOECIOUS, male and female flowers on two distinct individuals. 

 DISCOID, when in compound plants the florets are all tubular, the 



head is said to be discoid; with a convex face. 

 DISK, a fleshy process at the base of the ovary in many flowers ; 



the centre of a head of flowers in the Composited. 

 DISSECTED, cut into a number of narrow segments. 

 DISSEPIMENT, the partitions, divisions or septa in an ovary. 

 DISTICHOUS, arranged in rows on the two opposite sides of an axis. 

 DISTRACTILE a stamen having a long unequal connective, with a 



fertile cell at the one end and the other barren, as in Salvla. 

 DIVARICATE, widely spreading. 



DIVERGENT, objects gradually separating from a centre. 

 DORSAL, attached to the back; belonging to the back. 

 DOUBLE, applied to flowers when the stamens or other organs are 



turned into petals, as in the double Ranunculus, Roses, &c. 



