i 



diclinous 



digitinervius 



covering of perianth, as Mirabilis ; 

 di'clinous (Sis, two, K\lvrj, a bed), 

 unisexual, having the stamens in 

 one flower, and the pistils in 

 another ; Di'clinism, the separa- 

 tion of pollen and stigma in space, 

 as dichogamy is in time. 



dieoc'cous,-;s(5is,two,KoWos,akernel), 

 having fruit of two Cocci ; dicoe'lous 

 (/coiXos, a hollow), with two cavi- 

 ties ; Dicot'yls, an abbreviation 

 for Dicotyledo'neae, Dicotyle'dons 

 (KOTvX-rjduv, cup-shaped hollow, used 

 for seed-lobe), plants of the class 

 denoted by their possession of two 

 cotyledons ; dicotyle'donous, - nus, 

 having a pair of seed-lobes. 



dictyod'romous (IKTVOV, a net, 

 Spd/xos, a course), with reticulate 

 venation ; Dic'tyogens (y^vvau, I 

 bring forth), plants having netted 

 veins, proposed by Lindley as inter- 

 mediate between his ENDOGENS and 

 EXOGEXS ; dictyog'enous, applied to 

 monocotyledons with netted veins ; 

 ~ Lay'er, alayer of meristem general 

 in monocotyledons, which gives 

 rise to the central "body" and 

 cortex of the young roots (Man- 

 gin)- 



dicy'clic (Sis, two, KVK\OS, a circle), (1) 

 when a series of organs is in two 

 whorls as a perianth ; (2) applied 

 to biennials ; dicy'mose (/cO^a, a 

 wave), doubly cymose ; did'romic 

 (5p<Vtos, coarse), doubly twisted, as 

 the awns in Danthonia, Stipa, etc. ; 

 Did'romy, double torsion. 



did'ymous, -us(8idv/j.os, twin), (1) found 

 in pairs, as the fruits of Umbelli- 

 ferae ; (2) divided into two lobes ; 

 ~An'thers, when the two lobes are 

 almost destitute of connective. 



Didyna'mia ( Sis, twice, Stfwx/us, 

 power), a Linnean class marked by 

 didynamous flowers ; didyna'mian 

 didyn'amous, four-stamened flower, 

 with stamens in pairs, two long, 

 two short, as in most Labiatae. 

 Didy'namy, the condition above 

 defined. 



diae'cious = DIOECIOUS. 



Dieresllis, Dieresil'ia 



divide), Mirbel's name for CAR- 

 CERULE ; adj. dieresil'ian. 



Differentia'tion, of Cell-wall, the 

 arising of apparent layers; ~ of 

 Tissues, their development into 

 permanent tissue and consequent 

 diverse growth. 



diffluent (difflucns, dissolving), having 

 the power to dissolve, or readily 

 doing so. 



difformed', dijform'is (Sts, apart , forma, 

 shape), of unusual formation or 

 shape ; Difform'itas ( Lat. ), an 

 abnormality. 



diffract', diffrac'tus (Lat., broken), 

 broken into areolae separated by 

 chinks. 



diffuse', diffu's us (Lat. , spread abroad), 

 widely or loosely spreading ; ~ 

 Col'our, a colour which has "run" 

 into the surrounding tissues ; 

 Diffu'sion, (1) term used by Weisner 

 for the intermingling of different 

 gases under equal pressure, with or 

 without intervening partitions ; (2) 

 mixture of fluids, or dispersion of a 

 fluid through a solid or tissue. 



dig'amous, -us (dls, twice, yd/j.os, 

 marriage), having the two sexes in 

 the same cluster ; as in Com- 

 positae. 



dig'enous (Sis, two, yevos, offspring), 

 containing both sexes, or produced 

 sexually ; digenet'ic, sexual. 



Digestive Pock'et (or Sac), an invest- 

 ment of the secondary rootlets, 

 which penetrate the tissues of the 

 primary root till they reach the 

 exterior. 



Digltaline, an alkaloid contained in 

 Digitalis purpurea, Linn. 



digitate, digita'tus (dif/itiis, a finger), 

 fingered ; a compound leaf in which 

 all the leaflets are borne on the apex 

 of the petiole, as in the Horse- 

 Chestnut ; ~ pin'nate, when the 

 leaflets of a digitate leaf are 

 pinnate ; digita'tely, in a digitate 

 manner ; digitaliformls (forma, 

 shape), shaped like a finger, as the 

 corolla of the Foxglove ; digitiner- 

 vius (nervis, a nerve), when the 

 secondary nerves of a leaf diverge 



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