apical 



Apostaxis 



a'pical, apica'lis (apex, apicis, sum- 

 mit), at the point of any structure ; 

 ~ Axis, in Diatoms, the line through 

 the centre of the pervalvar axis in 

 the direction of the raphe, at equal 

 distances from homologous points 

 of the girdle band surfaces, and 

 through the apices ; ~ Cell, the 

 single cell in many plants which 

 is the origin of all longitudinal 

 growth ; <~ Cone = P0NCTUM VEGE- 

 TATIONIS ; ~ Growth, extension in 

 the length of the axis ; ~ Plane, in 

 Diatoms, the plane at right angles 

 to the valvar plane, which passes 

 through the pervalvar and apical 

 axes; C/.PERVALVAR~ ;TRANSAPICAL 

 ~ : apicicircinna'tus J (circinnatus, 

 turned round), ending in a circin- 

 nate manner ; apicil'lary, apicilla'- 

 ris, inserted on, or pertaining to the 

 summit, as in the dehiscence of the 

 capsule of Gerastium. 

 Apic'ula, Apic'ulum (Lat. a little 

 point), a sharp and short, but not 

 stiff point, in which a leaf may 

 end ; apic'ulate, apicula'tus, fur- 

 nished with an apicula. 

 A'pilary (a, without, TrZXos, hat), sup- 

 pression of the upper lip in such 

 flowers as Calceolaria ; Aplan'oga- 

 metes (n-Xdi/os, wandering, ya/j.eT'rjs, 

 a spouse), a non- ciliated gamete, 

 which may or may not be set free ; 

 Aplan'ospores (inropa, a seed), non- 

 inotile cells which are detached for 

 propagation, formed asexually by 

 true cell-formation and rejuvenes- 

 cence ; aplas'tic (TrXao-ris, moulded), 

 not convertible into organic tissues. 

 aplasmodioph'orus (TrXdV/ua, 

 moulded, 5os, resemblance, <popew, 

 I bear), used of Myxogastres which 

 do not produce plasmodia. 

 Aploperist'omi (dn-Xdos, simple, irepl, 

 around, crrd/ua., mouth), Mosses hav- 

 ing a single row of teeth in the 

 peristome, or none ; adj. aploperi- 

 stom'atous. 



Ap'oblast (dTTo, up, /3Xa<rr6s, a germ), a 

 barren shoot, as from pollard wil- 

 lows ; Ap'ocarp, Apocarp'ium, (icap- 

 TTOS, fruit), a fruit which is apo- 



carp'ous, -pus, that is, when the car- 

 pels of a Gynaecium are separate ; 

 apocy'tial (KVTOS, a hollow), multi- 

 nucleate and unicellular ; Apoc'yty, 

 Vuillemin's term for non-cellular 

 tissue in Fungi and Algae, the cells 

 being reduced to several nuclei 

 within the cell-wall, 

 apodog'ymis (a, without, wovs, 

 Trodos, foot ywtj, woman), applied 

 to a disk which is not adherent to 

 the ovary. 



Apoem'bryony (O.TTO, from, 2/j.ppvov, 

 an embryo), the embryo-stage sup- 

 pressed, the oosphere giving rise 

 immediately to the vascular mem- 

 bers ; Apog'amy (yd/j.os, marriage), 

 abnormal budding and production 

 of a bion by a prothallus without 

 sexual intervention ; adj. apog'- 

 amous ; Apog'eny (ytvos, offspring), 

 loss of power for sexual reproduc- 

 tion, the function of both male and 

 female organs being destroyed. 

 Apogeot'ropism (d, from, 777, the 

 earth, Tpoirij, a turn), growing away 

 Irom the earth, as normal stems ; 

 apogeotrop'ic, negatively geotropic ; 

 Apog'yny (ywj], woman), loss of 

 reproductive power in the female 

 organ ; apopet'alous (-ntTaXov, a 

 flower leaf), having free petals ; 

 polypetalous ; apophyll'ous(0i)XXoj', 

 leaf) applied to parts of a single 

 perianth whorl when free ; Apoph' 

 ysis ((f>vw, I grow) (1) the swelling 

 below the capsule of Splachnum and 

 other Mosses ; (2) also in the cone 

 scale of Pinus Pinaster, Soland. ; 

 apopn'ysate, possessing such an en- 

 largement ; aposep'alous (sepalum, 

 calyx-leaf) having free sepals ; 

 Aposp'ory (a-iropd, seed), suppression 

 of spore-formation, the prothallus 

 developing direct from the asexual 

 generation ; direct ~, is normal but 

 prolonged ; induced ~ , the prothalli 

 produce buds forthwith (Lang) ; 

 adj. aposp'orous ; Apost'asis 

 (<rrd(rts, standing) the monstrous 

 disunion of parts normally united. 

 Apostax'is (rdts, order) the abnormal 

 loss of nutritive or secreted fluids 



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