GLOSSARY OF BOTANICAL TERMS. 



411 



Embryo. — Applied in botany to the plantlet 

 within the seed. 



Embryo-sac. — The female reproductive cell 

 of flowering plants; a cell in the ovule in 

 which the embryo begins to form after 

 fertilization. 



Enchylema. — The more fluid portion of 

 protoplasm. 



Endecandrous — Possessing eleven sta- 

 mens. 



Endocarp. — The inner layer of the peri- 

 carp. 



Endochrome. — The brownish-colored por- 

 tion of the cell-contents in Diatomaceae. 



Endodermis. — A sheath, consisting of one 

 or more layers of cells, which encloses 

 certain kinds of fibro-vascular bundles. 



Endogens. — A term formerly applied, but 

 rather inappropriately, to the group of 

 plants now called Monocotyledons. 



Endogenous. — Growing from the inside, or 

 springing from the interior tissues. 



Endophlceum. — The inner layer of the bark 

 of the stems of Dicotyledons and Gym- 

 nosperms. 



Endophyte. — A plant growing within 

 another plant. 



Endopleura. — The inner seed-coat, also 

 called tegmen. 



Endosperm. — A mass of cells which devel- 

 ops within the embryo-sac, and which 

 usually constitutes the albumen of seeds. 



Endosporium. — The inner coat of a spore. 



Ens 1 form. — Sword-shaped. 



Entomophilous. — Literally, insect loving. 

 Applied to those* flowers which are cross- 

 fertilized by the agency of insects. 



Ephemeral. — Lasting but for a day. 



Epiblema. — The name applied to the pecul- 

 iar epidermal cells of the root, taken col- 

 lectively. 



Epicalyx. — A name applied to a whorl of 

 bracts below the calyx and resembling it. 



Epicarp. — The outer layer of the pericarp. 



Epicoralline. — Upon the corolla. 



Epicotyl. — That part of the embryo stem 

 which is above the cotyledon or cotyle- 

 dons. 



Epicotyledonary. — Above the cotyledons. 



Epidermis. — The boundary tissue of plants, 

 usually consisting of a single layer of com- 

 pactly arranged cells. 



Epigy.nous. — Upon the pistil. Applied to 

 other floral organs when they appear to be 

 separately inserted on the summit of the 

 ovary. 



Epinasty. — Curvature produced by growth 

 on the upper side of an extended organ. 



Epipetalous. — Upon the petals. Applied 

 to stamens when inserted upon or adnate 

 to the corolla. 



Epiphlceum. — The outer layer of the bark 

 of Dicotyledons and Gymnosperms. 



Epiphytal. — Pertaining to Epiphytes. 



Epiphyte. — A plant that grows upon another 

 plant but does not derive its sustenance 

 from it. 



Episperm. — The outer seed coat, also called 

 the testa. 



Epistrophe. — A term applied to the position 

 assumed by chlorophyll bodies when, by 

 reason of diminution of light, they place 

 themselves along the upper and lower 

 walls of the cells. 



EquisetiNvE. — The class of Pteridophyta 

 which includes the Scouring-rushes or 

 Horse-tails. 



Equitant. — Literally, riding. Applied to 

 leaves like those of the Iris, which are 

 vertical and folded lengthwise so that 

 each leaf, toward the base, overlaps or 

 straddles the next. 



Erose. — Irregularly toothed, as if gnawed. 



Erythrophyll. — Leaf-red. A red coloring 

 matter found in autumn leaves, ripe fruits, 

 etc. 



Et^rio. — A fruit, the product of a single 

 flower, which consists of small aggregated 

 drupes, as the fruit of the Raspberry. 



Etiolation. — The bleaching which occurs 

 in green plants when kept for a time in a 

 dark place, 



Eucyclic. — A term applied to a flower that 

 has the same number of parts in each 

 whorl and the successive whorls alternate 

 wit^each other; the same as symmetrical. 



Exalbuminous. — Applied to seeds that are 

 destitute of albumen, or of an extra food- 

 store laid up outside of the embryo. 



Exclrrent. — Applied to a tree trunk, like 

 that of the Balsam Fir, which does not 

 become dissolved into branches, but main- 

 tains its predominance over them. 



Exothecii/m.— The epidermis of the an- 

 ther. 



Exocarp. — The outer layer of the pericarp. 



Exogenous. — Growing from without, or 

 springing from exterior tissues, as the 

 growth of the leaf from the stem. Also 

 applied, though hardly correctly, to the 

 growth in thickness of the stems of Dico- 

 tyledons and Gymnosperms. 



