Dodecagjnia 



doubl* 



with twelve pistils ; dodecag'ynous, 

 -nus, possessing twelve pistils or 

 distinct carpels; dodecame'rous, -ras 

 ifieph^, a share), in twelve parts, as in 

 a cycle ; dodecan'der, dodecandrous ; 

 Dodecan'dria {av^p, avdphs, a man), 

 a Linnean class of plants with twelve 

 stamens ; dodecan'dl'ian, dodecan'- 

 drous, -drus, of twelve stamens, 

 normally (occasionally extended to 

 nineteen) ; dodecapet'alous {irfTaKov, 

 a flower-leaf), with twelve petals. 

 or less than twenty ; dodecari'nus 

 (appr)v, male), Necker's equivalent 

 for dodecandrous, 



Do'drans (Lat., a span), a full span, 

 from thumb tip to extremity of the 

 little finger, about nine inches, or 

 23 cm. ; dodranta'lis, a span long. 



dolabra'tus (Lat.), axed, or axe- 

 shaped ; dolaVrifonn. dolahriform'is 

 (forma, shaped), hatchet-shaped. 



doleiform'is {dolea, casks ; forian., 

 shape), barrel shaped. 



dolia'rius dolia'tus (Lat.), circinate. 



Dolichone'ma {ZoXixos, long; vTj^a, a 

 thread), the stage in nuclear division 

 which immediately precedes syna]»sis 

 in the formation of the reproduc- 

 tive cells ; Dolicho'sis, retardation 

 of growth in length (Czapek) ; 

 dolichosty'lous (+ Style), in 

 dimor]»hic or trimorphic species 

 applied to the long-styled form ; 

 Dolicho'tmema {rfxrifxa, free), a fili- 

 form cell which ruptures and sets 

 free the gemma of a Moss (Correns). 



Doma'tia {huixanov, a little hou.se\ 

 modified projections for .^shelter- 

 parasites (Tubeuf)- 



domestica'ted, thiiving under culti- 

 vation (Cro/cier). 



dom'inant (dom'uiam, prevailing, 

 ruling^ (1) in hybrids, the prevalent 

 character, in opposition to itErF-s- 

 sive; (2) chief constituent of a 

 j)lantassociation ; (3) ruling, as the 

 prei)onderant races and plants at a 

 given period. 



Domin'ion, state, condition ; recently 

 used as the ecpuvalent of (loebel's 

 " Staat," as Cell- -, Energid- ~. 



Dom'itofonn {domitus, tamed ; furma, 



form), a cultivated form, the 

 original being unknown or dis- 

 similar (Kuntze). 



dor'mant {doriniens, sleeping), applied 

 to parts whicli are not in active 

 life, as -^ Buds, -- Eyes, potential 

 buds which normally do not shoot, 

 until excited to growth by special 

 circumstances ; '~ State, the condi- 

 tion of a i^lant during thenAvinter, 

 or when inactive from any reason. 



dor'sal, dorsa'lis {dorsum, the back), 

 relating to the back, or attached 

 thereto ; the surface turned away 

 from the axis, which in the case of 

 a leaf is the lower surface (Note. — 

 Til is is reversed by some authors); 

 ~ Su'ture, the suture of a follicle 

 or legume which is exterior to 

 the axis ; the midrib of a carpel ; 

 dorsicum'bent {cumhens, lying down) 

 = SUPINK (Crozier) ; dorsiferous 

 {fero, I bear), borne on the back, as 

 the sori on most Ferns ; dor'sifixed. 

 dorsifix'us {fixiis, fast), fixed on the 

 back or by the back ; Dorsinas'ty 

 (vaffrhs, pressed) = Etinasty ; dorsi- 

 vent'ral( render, the belly), used of an 

 organ which has dorsal and ventral 

 surfaces, as a leaf ; Dorsiventral'ity, 

 the condition of possessing upper 

 and lower faces of an organ ; Dor'sum 

 (Lat), (1) tlie back, or parts of the 

 ilower which face the outside ; (2) 

 in Diatoms, in forms which are more 

 or less Innately curved, the convex 

 side of the girdle. 



Dots (1) receptacles of oil in the 

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

 dotted, punctured with dots ; ~' 

 Ducts, vessels with pit-like mark- 

 ings on the walls; ~ Tis'sue = 

 BoTiniENcnvMA. 



dothidia'ceous, like the genus 

 Doihidia. 



doub'le, du'phx (1) twice ; (2) used of 

 flowers when the })etals are mon- 

 strously increased at the expense of 

 other organs, especially the stamens ; 

 ~ bear'ing, producing a crop twice 

 in the same season ; ^ Fert'iliza- 

 tion, in Angiosperms. when one 

 male cell from the pollen-tube fuses 



118 



