DIPLOTEGIA (diplos, Gr. double; stegos a covering), an inferior capsule, dehiscing by valves or pores. A double covering, as of a calyx and epicalyx. DISCIFORM (discus, Lat. a quoit), disk-shaped. Flat and circular.

DISCOCARP (diskos, Gr. a disk; karpos, a fruit), a collection of fruits in a hollow receptacle (241).

DISCOIDAL (discus, Lat. a quoit), round, with a convex face.

DISK (discus, Lat. a quoit), any organ between the stamens and ovary, generally scaly or annular (199). DISSEPIMENT (dissepio, Lat. I separate), partitions in a fruit.

DISTANT, applied to the gills of Agarics when far away from each other.

DISTICHOUS (dis, Gr. twice; stichos, a rank), in two rows, opposite each other.

DISTRACTILE (distractus, Lat. drawn asunder), divided in two parts; torn asunder (87).

DIVARICATE (divaricatus, Lat. severed), straggling, spreading irregularly.

DODECANDROUS (dodeka, Gr. twelve; anēr, a man), when a flower has twelve stamens.

DORSAL (dorsum, Lat. the back), fixed upon the back. DRUPE (drupe, Lat. unripe olives), succulent or fleshy fruit, with a hard-shelled seed (222).

DRUPEL, a little drupe. (See ETÆRIO.)

DUCTS (duco, Lat. I conduct), tubular vessels marked with lines or dots.

DURAMEN (durus, Lat. hard), heartwood of trees.

E.

EARED (see AURICULATE) having two rounded lobes at the base (94).

EBRACTEATE (e, Lat. without; bractea, a bract), without bracts.

ECHINATE (echinatus, Lat. set with bristles), furnished with stiff prickles.

EDENTATE (e, Lat. without; dens, a tooth), without teeth.

ELATER (elater, Gr. a driver), elastic spiral threads, found with spores in liverworts, &c. (284 4). ELLIPTICAL (elleipsis, Gr. an oval figure), having the form of an ellipse, oval, rounded at the ends (85). EMARGINATE (e, Lat. out of; margo, the margin), having a notch at the end (128). Applied to the gills of Agarics when they are notched or scooped out before reaching the stem (279).

EMBRYO (embruon, Gr. a fœtus), rudimentary plant within its seed.

EMBRYO-BUDS (embruon, Gr. a fœtus), a term sometimes applied to adventitious buds found beneath the bark in the trunks of some trees.

ENDOCARP (endon, Gr. within; karpos, fruit), lining of a carpel. Inner layer of pericarp.

ENDOCHROME (endon, Gr. within; chromos, colour), cell-contents of Algæ. Colouring matters.

ENDOGENOUS (endon, Gr. within; gennao, I produce), growing by additions in the centre (33).

ENDOPHLEUM (endon, Gr. within; phloios, bark), inner layer of bark. The liber.

ENDOPLEURA (endon, Gr. within; pleura, a side), the innermost skin of a seed-coat.

ENDORHIZAL (endon, Gr. within; rhiza, a root), in germination, when the root protrudes from the end of the radicle, the latter forming a sheath at its base (257).

ENDOSMOSE (endon, Gr. within; osmos, impulsion), the inward current established between fluids of different densities when separated by animal or vegetable membrane.

ENDOSPORE (endon, Gr. within), the inner integument of lichen-spores.

ENDOSTOME (endon, Gr. within; stoma, a mouth), an opening in the inner integument of an ovule.

ENDOTHECIUM (endon, Gr. within; theke, a box), lining of an anther-lobe.

ENNEANDROUS (ennea, Gr. nine; aner, a man), when a flower has nine stamens.

ENSIFORM (ensis, Lat. a sword; forma, shape), shaped like a broad-sword.

ENTIRE, having no marginal divisions or serratures (68, 69).

ENTOPHYTES (endon, Gr. within; phuton, a plant), plants growing within others.

EPIBLEMA (epi, Gr. upon; blema, a wound), a kind of imperfect epidermis covering the extremities of roots, &c.

EPICALYX (epi, Gr. upon; calux, the calyx), an external involucel to the calyx, as in mallows (245). EPICARP (epi, Gr. upon; karpos, fruit), the outer layer of a pericarp (230 E).

EPICHILIUM (epi, Gr. upon; cheilos, a lip), the upper portion of the labellum of an orchid, when it is divided into two parts.

EPICLINAL (epi, Gr. upon; kline, a bed), seated on the disk or receptacle.

EPIDERMIS (epi, Gr. upon; derma, skin), the true skin of plants.

EPIGONIUM (epi, Gr. upon; gunē, female), a bag inclosing the young spore-case of liverworts.

EPIGYNOUS (epi, Gr. upon; gunē, a female), appearing to grow upon the ovary (197).

EPIPETALOUS (epi, Gr. upon; petalon, a petal), growing upon the petals (198).

EPIPHLEUM (epi, Gr. upon; phloios, bark), the outer layer of bark.

EPIPHRAGM (epi, Gr. upon; phragma, a division), a membrane closing the mouth of the theca in urn

mosses.

EPIPHYLLONS (epi, Gr. upon; phullon, a leaf), upon a leaf.

EPIPHYTAL (epi, Gr. upon; phuton, a plant), growing upon another plant.

EPIPHYTE (epi, Gr. upon; phuton, a plant), a plant growing upon, but not nourished by another.

EPISPERM (epi, Gr. upon; sperma, the seed), the seed

coat.

EPISPORANGIUM (epi, Gr. upon; spora, a seed; aggos, a vessel), an indusium overlying the spore-cases of a fern (Aspidium).

D

EPISPORE (epi, Gr. upon; spora, a seed), the outer integument of lichen-spores.

EPITHELIUM (epi, Gr. upon; thēlē, a nipple) a modified epidermis with thin cells, filled with transparent colourless fluid, lining the ovary, &c.

EPLICATE (e, Lat. not; plicatus, plaited), not plaited.

EQUITANT (equitans, Lat. riding), in vernation, when leaves over-ride each other (61).

ERECT (erectus, Lat. upright), applied to ovules arising from the base of the ovary (211).

EROSE, ERODED (erosus, Lat. gnawed round about), having irregular serratures, as if bitten out.

ESTIVATION, arrangement of leaves in a flower-bud. (See ESTIVATION.)

ETARIO (etairia, Gr. a society), a fruit composed of agglomerated drupes (229).

ETIOLATED (etiolatus, Lat. blanched), blanched; deprived of colour.

EVITTATE (e, Lat. without; vitta, bands), without vittæ.

EXALBUMINOUS (ex, Lat. without; albumen), without albumen.

EXASPERATE (exasperatus, Lat. sharpened), clad with hard stiff short points.

EXCENTRIC (ex, Lat. without; centrum, the centre), out of the centre.

EXCIPLE (excipio, Lat. I receive), the capsule or

envelope of the thalamium in the apothecia of