GLOSSARY OF SPECIAL TERMS. 



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Deciduous. Falling away at the close 

 of the growing period. 



Decompound. More than once divided. 



Decumbent. Stems or branches in an 

 inclined position, but the end ascend- 

 ing. 



Decurrent. Applied to the prolongation 

 of an organ, or part of an organ run- 

 ning along the sides of another. 



De/lexed. Turned abruptly downward. 



Dehiscence. The opening of an ovary, 

 anther-sac or sporange to emit the 

 contents. 



Dehiscent. Opening to emit the con- 

 tents. 



Deltoid. Broadly triangular, like the 

 Greek letter delta. 



Dentate. Toothed, especially with out- 

 wardly projecting teeth. 



Denticulate. Diminutive of dentate. 



Depauperate. Impoverished, small. 



Depressed. Vertically flattened. 



Dextrorse. Spirally ascending to the 

 right. 



Diadelphous. Stamens united into two 

 sets. 



Diandrous. Having two stamens. 



D'.chotomous. Forking regularly into 

 two nearly equal branches or seg- 

 ments. 



Dicotyledonous. With two cotyledons. 



Didymous. Twin-like; of two nearly 

 equal segments. 



Disuse. Loosely spreading. 



Digitate. Diverging, like the fingers 

 spread. 



Dimorphous. Of two forms. 



Dioecious. Bearing staminate flowers 

 or antherids on one plant, and pistil- 

 late flowers or archegones on another 

 of the same species. 



Discoid. Heads of Compositae com- 

 posed only of tubular flowers ; rayless ; 

 like a disk. 



Disk. An enlargement or prolongation 

 of the receptacle of a flower around 

 the base of the pistil; the head of 

 tubular flowers in Compositae. 



Dissected. Divided into many segments 

 or lobes. 



Dissepiment. A partition-wall of an 

 ovary or fruit. 



Distichous. Arranged in two rows. 



Distinct. Separate from each other ; 

 evident. 



Divaricate. Diverging at a wide angle. 



Divided. Cleft to the base or to the 

 mid-nerve. 



Dorsal. On the back, pertaining to the 



back. 

 Drupaceous. Drape-like. 



Drupe. A simple fruit, usually inde- 

 hiscent, with fleshy exocarp and bony 

 endocarp. 



Drupelet. Diminutive of drupe. 



Echinate. Prickly. 



Ellipsoid. A solid body, elliptic in sec- 

 tion. 



Elliptic. With the outline of an ellipse ; 

 oval. 



Emarginate. Notched at the apex. 



Embryo. A rudimentary plant iji the 

 seed. 



Evd»yo-sac. The macrospore of the 

 flowering plants, contained in the 

 ovule. 



Endocarp. The inner layer of the peri- 

 carp. 



Endogenous. Forming new tissue with- 

 in. 



Endosperm. The substance surrounding 

 the embryo of a seed; albumen. 



Ensiform. Shaped like a broadsword. 



Entire. Without divisions, lobes, or 

 teeth. 



Ephemeral. Continuing for only a day 

 or less. 



Epigynous. Adnate to or borne on the 

 upper part of the ovary. 



Epiphytic. Growing on other plants, 

 but not parasitic. 



Equitant. Folded around each other; 

 straddling. 



Erase. Irregularly margined, as if 

 gnawed. 



Evanescent. Early disappearing. 



Evergreen. Bearing green leaves 

 throughout the year. 



Excurrent. With a tip projecting be- 

 yond the main part of the organ. 



Exfoliating. Peeling off in layers. 



Exocarp. The outer layer of the peri- 

 carp. 



Exogenous. Forming new tissue out- 

 side the older. 



Exserled. Prolonged past surrounding 

 organs. 



Exstipulate. Without stipules. 



Extrorse. Facing upward. 



Falcate. Scythe-shaped. 



Farinaceous. Starchy, or containing 

 starch. 



Fascicle. A dense cluster. 



Fascicled. Borne in dense clusters. 



Fastigiate. Stems or branches which 

 are nearly erect and close together. 



Fenestrate. With window-like mark- 

 ings. 



Fertile. Bearing spores, or bearing 

 seed. 



Fertilization. The mingling of the con- 

 tents of a male and female cell. 



