GLOSSARY OF TERMS. 399 



Denticulate , furnished with small teeth. 



Depressed, flattened vertically. 



Depressed leaves, root-leaves pressed close to the ground. 



Digitate, several leaflets resting on the top of a common stalk, f. 73. 



Dioecious, when stameniferous flowers grow on one plant, and pis- 



tilliferous flowers on another plant, of the same species. 

 Dilated stalks, enlarged in breadth. 

 Disk, the central florets of a compound flower. 

 Dorsal, on the back. 

 Downy, covered with soft fine hairs. 

 Drupe, a fleshy fruit, containing a nut, f. 142. 



Egg-shaped, longer than broad, the base broader than the end ; 



when applied to the leaf, bractea, petal, &c. the term merely 



implies that these flat parts have the outline of an egg, f. 36 ; 



but when applied to a seed or capsule, it means that they are 



truly the form of an egg. 

 Elliptical, the length greater than the breadth, and both ends 



rounded, f. 37. 

 Embracing the stem, leaves sessile and clasping the stem at their 



base, f. 30. 



Emersed, standing out of the water. 

 Entire, without division, or without teeth or notches on the edges, 



f. 36, 43. 



Equal, all of the same length, f. 117, 120. 

 Equitant leaves, disposed in two opposite rows, and embracing 



each other at the base, f. 33. 

 Erect, rising perpendicularly. 

 Even, destitute of inequalities. 

 Evergreen leaves, remaining green during the winter. 



Feathery seed-down, consisting of hairs which are subdivided like 



the shaft of a feather, f. 150. 

 Fertile flower, having pistils but not stamens. 

 Fibrous root, consisting entirely of fibres or radicles, f. 1. 

 Fleshy, thick and juicy. 

 Flat receptacle, perfectly even, f. 154. 

 Filament, the stalk which supports the anther, f. 133, a. 

 Flexuous, forming angles from right to left, and inversely. 

 Floating leaves or stems, lying flat on the surface of the water. 

 Flower-stalk, a slender body which supports the flower, f. 19. 

 Floral leaf, an appendage to the flower or its stalk, f. 85, a. 86, a. 

 Follicle, a one-valved, one-celled capsule, opening lengthwise. 

 Forked, regularly and repeatedly dividing into two, f. 10. 

 Four-ranked, with leaves or branches spreading in four directions. 

 Fringed, margined with a row of hairs, f. 64. 

 Frond, a leaf bearing the fructification. 

 Furrowed, marked with parallel elevated and depressed lines. 



Gaping corolla, an irregular corolla, with two lips and an open 



throat, f. 123. 

 Geniculate straw, with the joints enlarged and bent like a knee, 



f. 18. 



Germen, the undermost part of the pistil, f. 136 a. 

 Glands, small soft bodies secreting fluids. 

 Glaucous, covered with a pale greenish-blue mealiness. 



