Dots 



dusty- 



Dots (1) receptacles of oil in the 

 leaves ; (2) pits in the cell-wall ; 

 dotted, punctured with dots ; <~ 

 Ducts, vessels with pit-like mark- 

 ings on the walls ; ~> Tis'sue = 



BOTHRENCHYMA. 



double, du'plex (1) twice ; (2) used of 

 flowers when the petals are mon- 

 strously increased at the expense 

 of other organs, especially the 

 stamens ; ~ bear'ing, producing a 

 crop twice in the same season ; 

 Doubling, the same as chorisis ; 

 doubly, something repeated, as ^ 

 toothed, the teeth themselves being 

 toothed. 



Down (1) soft pubescence; (2) the 

 pappus of such plants as thistles ; 

 down'y, pubescent, with fine soft 

 hairs. 



Dra'canth (draganthum, Mid. Lat.), 

 a synonym of Gum Tragacanth. 



Draco'nine, a red resinous sub- 

 stance from "Dragon's Blood," 

 Sroduced by Daemonorops Draco, 

 lume, and Dracaena Draco, 

 Linn. 



drawn, applied to attenuated shoots, 

 diminished and etiolated, often 

 increased in length. 



drep'aniform (dpetravw, a sickle, 

 forma, shape), falcate (Crozier) ; 

 Drepa'nium, a sickle-shaped cyme. 



Drip-point, Drip-tip, the acuminate 

 apex of a leaf, from whose point 

 water soon drips ; Germ. Traufel- 

 spitze. 



drooping, inclining downwards, cer- 

 nuous, but not quite pendent. 



Drop'per, the young bulb of a tulip, 

 not of flowering size. 



Drop'ping-point = DRIP-POINT. 



drupa'ceous(crwpa, an olive, + aceous), 

 resembling a DRUPE, possessing its 

 character, or producing similar 

 fruit ; Drupe, Dru'pa, a stone-fruit 

 such as a plum ; Spu'rious ~> , any 

 fleshy body enclosing a stone ; 

 Dru'pel, Dru'pelet, Drupe'ola, a 

 diminutive drupe, the fruit of the 

 Blackberry is an aggregation of 

 these ; Drupe'tum, a cluster of 

 drupes ; Dru'pose, a constituent of 



the stone-cells of the flesh of pears 

 (Cross and Bevan). 



Dry-rot, destruction of timber in 

 houses by Merulius lacrymans, Fr. 



du'bious, du'bius (Lat.), doubtful, 

 used for plants whose structure or 

 affinities are uncertain. 



Duct, Duct' us (Lat., led, conducted), 

 an elongated cell or tubular vessel, 

 especially occurring in the fibro- 

 vascular portions of plants ; an'- 

 nular<~, the secondary thickenings 

 occurring more or less in the form 

 of rings ; closed ~ , long cells, not 

 continuous, but with the intervening 

 septa remaining ; dot'ted ~ , = BOTH- 

 RENCHYMA ; intercellular ~ , pas- 

 sages between the cells; retic'u- 

 lated^, where the markings seem 

 to form a network; scalarlform ~ 

 with ladder-like markings as in 

 Ferns. 



dul'cis (Lat.), sweet, extended to any 

 kind of taste which is not acrid ; 

 Dul'cite, a crystalline substance 

 from Melampyrum, also found in 

 Madagascar Manna. 



du'metose, dumeto'sus (dumetum, a 

 thicket), bushy, relating to bushes ; 

 Dume'tum, a thicket. 



dumose' (dumo'sus, bushy), full of 

 bushes, of shrubby aspect ; Du'mus 

 (Lat.), a bush. 



duode'ni (Lat.), by twelves, growing 

 by twelves. 



du'plex (Lat.), double; du'plicate, 

 duplica'tus, doubled or folded, 

 twin ; Duplication, doubling, CHORI- 

 SIS ; duplica'to - crena'tus, doubly 

 crenate ; <- denta'tus, doubly- 

 toothed ; ~ pinna'tus, bipinnate ; ~ 

 serra'tus, doubly -serrate ; ~ terna'- 

 tus, biternate ; duplo = twice as 

 many, in Greek compounds it is 

 diplo. 



Dura'men (Lat., a hardened vine 

 branch), the heartwood of an exo- 

 genous stem, which has become 

 hardened by deposits. 



Dust, Blair's word for Pollen ; dust'y> 

 covered with granulations re- 

 sembling dust ; or powdered, fari- 

 nose. 



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