Dissemination 



Bodecagynia 



(in Ger. Aussaet) ; Dissem'inule, a 

 plant in the state of being trans- 

 ported ; a seed fruit modified for 

 migration (.Clements). 



Dissep'iment, Dii^sepiment'um (Lat., a 

 partition), a partition in an ovary 

 or pericarp, caused by the adhesion 

 of the sides of carpellary leaves ; 

 spu'rious ~, a partition not having 

 that origin. 



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

 apart), bursting asunder. 



dissim'ilar (dissimilis, unlike), when 

 similar organs assume different 

 forms in the same individual, as 

 the anthers of Cassia. 



Dissocia'tion {dissociatio, separation), 

 observed in the fibrovascular system 

 of the Lentibularieae, the wood and 

 bast being mutually independent. 



Dis'sophyte {Zicrahs, two-fold ; <f)vThv, 

 a plant), a plant with xerophytic 

 leaves and stems, and mesophytic 

 roots (Clements). 



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. 



Disteleorog^, defined by Haeckel as 

 purposelessness ; for botanic usage, 

 see Dysteleology. 



Disten'sion {distensus, stretched out), 

 swollen or bulging. 



dist'ichoas, -vs {Slanxos, of two rows), 

 disposed in two vertical ranks, as 

 the florets in many grasses. 



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

 separate from, not united. 



distrac'tile distracti'lis {distractiuf, 

 pulled two ways), borne widely 

 apart, as the anther-lobes in 

 Salvia. 



Dis'trict, applied as the equivalent of 

 the Ger. Bezirk ; a small region or 

 tract of country. 



distromat'ic {^U, two, + Stroma), ap- 

 plied to those species of Porphyra 

 \v\i\i the thallus in two layers; </. 

 MONOSTROMATic; Dls'trophy {rpotph, 

 nourishment), employed for Re for 

 disparity in size of homologoua 



organs ; dithe'cal (Si^fTj, a case), 

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

 as most anthers ; Ditopog'amy 

 {r6iros, place ; yd/j-os, marriage), 

 Ludwig's term for Heterostyly ; 

 ditrichot'omous {rpixv, threefold ; 

 tJjUtj, a cutting), doubly or trebly 

 divided; di'triploid (-f triploid), 

 the fusion of two triploid nuclei into 

 one (NSmec). 



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

 curring in the day-time, sometimes 

 used for ephemeral ; ~ Sleep, = 

 Paraheliotropism. 



divar'icate, divarica'tus (Lat., spread 

 asunder), extremely divergent. 



Diverg'ence {divergium, turning in 

 different directions), used when 

 parts gradually separate as they 

 lengthen, as the follicles in Ascle- 

 pias ; Angle of — , the angle between 

 succeeding organs in the same 

 spiral or whorl ; diver'gent, -etis, 

 diverg'ing, separating by degrees) ; 

 diverginer'vius {nervus, a nerve), 

 with radiating main nerves. 



diversiflor'ous, -rus{diversus, contrary ; 

 flo8^ jioris, a flower), with flowers 

 of more than one kind ; diver'sus, 

 (1) variable (deCandolle) ; (2) differ- 

 ent or separate. 



Divertic''ulum (Lat., a byeway), in 

 Algae, a protoplasmic protrusion, 

 communicating with the fused 

 procarp cells and the placenta, as 

 in Gracilaria confervoides, Grev. 



divi'ded, divi'sus (parted asunder), 

 used where lobing or segmentation 

 extends to the base ; divisu'ral 

 (line), the line down the teeth of 

 the peristome of a Moss by which 

 the teeth split. 



Dix'eny (5)s, two ; ^ivos, a host), where 

 an autoecious parasite may infest 

 two species, but does not need a 

 change of host to ensure its develop- 

 ment (De Bary) ; dixyric (^vAoy, 

 wood), having the xylem in two 

 masses (Brebner). 



-doch'e {'^oxh, succession), used by 

 Clements for "succession " 



Dodecagyn'ia (Sa'ScKo, twelve ; yw^, 

 woman), a Linnean order of plants 



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