Glossary. 183 



Decumbent — Lying flat on the ground and rising at the apex. 



Decurrent — Applied to leaves (as in the Thistle) of which the petiole is con- 

 tinued down the side of the stem, in which case the stem is said to be 

 winged. 



Decussate — Opposite leaves of which each pair is at right angles with the 

 pairs above and below. 



Dehiscence — Mode of opening, as of a seed-vesseL 



Dentate — With short triangular marginal divisions. 



Diadelphous — Applied to the stamens when they are in two bundles united 

 by their filaments. 



Dichotomous — Dividing into two, each division again into two, and so on. 

 Dicoccous — Consisting of two cocci, as the fruit of Dog's Mercury. 

 Didynamous — Applied to the stamens, 2 long and 2 short. 

 Digitate — Applied to a compound leaf when the leaflets diverge from one 

 point, e.g. the horse-chestnut. 



Dioecious — With staminate and pistillate flowers on different plants. 

 Disk — The part of the flower between the stamens and pistil. 

 Dissepiment — A division in the ovary. 



Dorsal — On the back. The dorsal suture is the suture of the carpel furthest 

 from the axis. 



Drupe — A fleshy fruit with a stony endocarp like the cherry. 



Emarginate — With a portion cut out of the end. 



Endocarp — The inner layer of the pericarp next the seed. 



Ensiform— Sword-shaped. 



Entire — Without marginal divisions. 



Epicarp — The outer covering of the fruit. 



Epigynous — Seated upon the ovary in consequence of adhesion to it. 



Epipetalous — Growing on the petals. 



Exalbuminous — Without albumen. 



Exserted — Extending beyond an organ, as when the stamens project from 

 the corolla. 



Exstipulate — Without stipules. 



Falcate— Bent like a sickle. 



Fascicled— In bundles. 



Filamentous — Split into filaments. 



Filiform— Capillary, thread-like. 



Fistular — Hollow. 



Flocculent — Covered with wool-like tufts. 



Follicle — A one-celled many-seeded dehiscent carpel. 



