discous 



Divergence 



receptacle ; disc'ous, the same as 

 discoid (Crozier). 



discrete', discre'tus (Lat. , parted), 

 separate, not coalescent. 



Disc'us (Lat. from SICTKOS), see Disc ; 

 Disc'ulus (dim. of Discus), the 

 adventitious lobule of Hepaticae 

 (Spruce) ; disc'al, word used by 

 J. Smith to express "on the 

 surface of the frond, superficial." 



disep'alous, -us (Sis, two + SEPALUM), 

 of two sepals. 



Disjunc'tion (disjunctio, separation) 

 see DIALYSIS, FISSION, SOLUTION, 

 varying degrees of separation in 

 organs ; Disjunc'tor, Woronin's 

 term for a spindle-shaped cellulose 

 connection between the gonidia in 

 certain Fungi ; the developed sep- 

 tum, as in Sderolinia Faccinii, 

 Woron. 



Disk, see Disc. Disk is the more 

 usual spelling in the case of Com- 

 positae, as ~ Flor'ets, ~ Flow'ers, 

 those occurring on the central 

 portion of the capitulum of com- 

 positae, not of the ray (or margin) ; 

 ~ shaped = DISCOID. 



Disloca'tion (din, apart, locus, a place) 

 DISPLACEMENT ; disoperc'ulate 

 (operculum, a lid), deprived of the 

 cover or lid. 



disperm'ous (5Js, double, airep^a., a 

 seed), two-seeded. 



Disper'sal, Dispers'ion (disperses, 

 scattered), the various ways by 

 which seeds are scattered, by 

 wind, birds, adhesion to animals, 

 etc.; in Germ., Verbreitungsmittel. 



Dispi'rem (Sis, two, + SPIREM) a 

 stage in nuclear division, as in 

 Psilotum triquetrum, Sw. which 

 follows the Dyaster (Rosen). 



dispi'rous (Sis, double, cnre'ipa, a coil), 

 Spruce's term for the elatersof Hepa- 

 ticae which have double spirals. 



Displacement, the abnormal situa- 

 tion of an organ ; diremption. 



Disposit'io (Lat., arrangement), the 

 manner in which parts are ar- 

 ranged, as " disp. f " indicates 

 that phyllotactic system. 



dissect'ed, dissect' us (Lat., cut up), 



deeply divided, or cut into many 

 segments. 



Dissemina'tion (disseminatio, sowing), 

 the contrivances by which ripe 

 seeds are shed by the parent plant ; 

 in Germ., Aussaet. 



Dissepiment, Dissepiment' um (Lat., 

 a partition), a partition in an ovary 

 or pericarp, caused by the ad- 

 hesion of the sides of carpellary 

 leaves ; spu'rious ~ , a partition not 

 having that origin. 



dissil'ient, dissil'iens (Lat., flying 

 apart), bursting asunder. 



dissimilar (dismmilis, unlike), when 

 similar organs assume different 

 forms in the same individual, as 

 the anthers of Cassia. 



Dissocia'tion (dissociatio, separation), 

 separation. 



dist'ad = dis'tal (disto, I stand apart), 

 remote from the place of attach- 

 ment ; the converse of proximal ; 

 dist'ant, distans, when similar parts 

 are not closely aggregated, in 

 opposition to approximate. 



Disten'sion (dixftnsits, stretched out), 

 swollen or bulging. 



Disteleol'ogy, defined by Haeckel as 

 purposelessness ; for botanic usage 

 see DYSTELEOLOGY. 



distichous, -us (St'ort^os, of two rows), 

 disposed in two vertical ranks, as 

 the florets in many grasses. 



distinct, distinct' us (Lat., separate), 

 separate from, not united. 



distrac'tile, distracti'lis (distractus, 

 pulled two ways), borne widely 

 apart, as the anther-lobes in 

 Salvia. 



dithe'cal (Sis, two, 07?*?;, a case), 

 dithe'cous, dithe'cus, of two cells, 

 as most anthers ; ditrichot'omous 

 (rpi^ri, threefold, TOW, a cutting), 

 doubly or trebly divided. 



diur'nal, diur'ims (Lat., daily), oc- 

 curring in the day -time, sometimes 

 used for ephemeral ; ~ Sleep, = 

 PARAHELIOTROPISM. 



divaricate, divarica'tus (Lat., spread 

 asunder), extremely divergent. 



Diverg'ence (divergium, turning in 

 different directions), used when 





80 



