GLOSSARY. 



397 



Crescent-shaped, approaching the 

 figure of a crescent, as the glands 

 on the involucre of Euphorbia. 



Crest, an irregular, elevated, notched 

 ridge, resembling the crest of a 

 helmet. 



Crisped, curled. 



Cryptogam, a term applied to the 

 lower tribes of plants, which are 

 not furnished with true flowers. 



Cryptogamic, having the character- 

 istics of the cryptogams, that is, 

 not bearing true flowers. 



Culm, the stem of a grass. 



Cuneate, wedge-shaped. 



Cupuliferous, bearing cupules or in- 

 volucres composed of bracts ad- 

 hering by their bases, and forming 

 a sort of cup in which the fruit is 

 seated, as in the oak or nut. 



Cuspidate, gradually tapering into a 

 sharp stiff point. 



Cylindrical, approaching closely to 

 the form of a cylinder ; as the 

 stems of grasses. 



Cyme, an inflorescence in which nu- 

 merous peduncles are given off in 

 all directions from the summit ot 

 a branch, and these bear a termi- 

 nal flower and secondary pedicels 

 from below it, as in the common 

 elder. 



Deciduous, applied to trees^or shrubs 

 the leaves of which are shed an- 

 nually, so that the branches be- 

 come bare ; the opposite of ever- 

 green ; applied also to other organs 

 which fall off after their functions 

 have been performed. 



Decompound, Decomposite, subdi- 

 vided to a considerable extent. 



Decumbent, reclining upon the sur- 

 face of the earth, but with a ten- 



dency to rise again towards the 

 extremity. 



Decurrent, prolonged below the 

 point of insertion, as if running 

 downwards, as in the leaves of 

 most thistles. 



Dehiscent, bursting by a regular line 

 of suture. 



Dentate, toothed. 



Denticulate, furnished with small 

 teeth. 



Diadelphous, having the stamens 

 united into two distinct sets or 

 bundles. 



Dichotomous, forked or subdivided 

 once or repeatedly, with the 

 branches in pairs. 



DicJilamydeous, having both calyx 

 and corolla. 



Diclinous, applied to those plants 

 of the same species which bear 

 unisexual flowers on distinct 

 plants. 



Dicotyledons, plants whose seeds 

 have two or more cotyledons or 

 seed-lobes. 



Dicotyledonous, possessing two coty- 

 ledons. 



Didynamous, having four stamens, 

 of which two ai f e longer than the 

 other two. 



Diffuse, spreading widely in an irre- 

 gular horizontal manner. 



Digitate, applied to simple leaves, 

 where the lobes are very narrow 

 and cut nearly to the base of the 

 limb ; and to compound leaves, 

 where the leaflets are all placed at 

 the very extremity of the petioles. 



Dio2cious, bearing unisexual flowers 

 of the same species on distinct in- 

 dividual plants. 

 Discoid, disk-like, round, and some- 



