Apaerotazii 



apical 



Apaerotax'is {d^f, air ; rd^is, order), 

 used by Rothert for negative stimu- 

 lus by oxygen, in the case of anaero- 

 bic organisms. 



apag'ynus J (fiira|, once; ywi], woman), 

 monoearpic. 



Apan'dry (iiro, without ; ovr/p, ituSphs, 

 man); (1) M'Nab's term for fusion 

 of tlie antheridium with the oogon- 

 ium ; also aj>plied to the pollen- 

 tube ; (2) the loss of function in tlie 

 male organs ; adj. apan'drous. 



aparaph'ysate (o, without ; wapa, near ; 

 <pvonai, I am born), destitute of 

 paraphvses ; aperisperm'ic, aperi- 

 upernuvtus (-f Perisperm), exal- 

 buminous. 



apertiflo'rous {fios, fion's, a flower), 

 Boulger's term for chasmooamic. 



Aper'tio (Lat , unfolding)= Anthesis. 



Apertu'ra (I .at., opening), a) formerly 

 used of the dehiscence of anthers ; 

 (2) the ostiole of certain Fungi ; 

 apert'ns (I-at., opened), exposed, 

 naked. 



Apet'alae (a, without ; irtraKov, a 

 flower leaf"), plants wanting petals or 

 corolla ; apefalous, his. apet'alose, 

 without ]ietals, or with a single 

 perianth, as in Clematis, where the 

 coloured sepals simulate petals ; 

 Apet'alouaness, being without petals; 

 Apet'aly, the condition of wanting 

 petals ; rf. A.i-etat.ousness. 



A'pex X pi. A'pices (Lat., sunmiit), (1) 

 an old name for Anther ; (2) the 

 ostiole of Fungi (Lindley) ; (3) the 

 growing point of a stem or root ; (4) 

 the tip of an organ ; Floral ~ = 

 Mamelon. 



Aphan'eri, 1>1. (o, not ; <pavcp})s, mani- 

 fest), organisms which are not vis- 

 ible without the aids of re-agents 

 (Maggi). 



Aphan'isis {a.(pa.viais, disappearance), 

 suppression of parts. 



Aphanocy'clae {6.<pav^Sy unseen ; kvkKos, 

 a circle), Sachs's name for certain 

 plants where the whorls are not very 

 manifest, as Nympliaeaceae. 

 Aphaptot'ropism (-f Haftotropism), 

 not influenced by touching stems or 

 other surfaces (G. Henslow). 



28 



Apheliot'ropism (diro, from ; ^A-tos, the 

 sun ; rpoirh, a turning), turning away 

 from the light, negative heliotrop- 

 ism, as in roots ; adj. apheliotrop^ie. 



ApbleVia (a, without ; <p\f^, <(>\€fihs, 

 vein), used generically by C. Presl, 

 but descriptively by Solms-Laubach 

 for anomalous pinnae on the rhachis 

 of certain fossil ferns, and the exist- 

 ing Hcmitelia capensis, R, Br. 

 '- Traces, pinna traces in Diplolabis 

 derived from aphlebiae ; apho'tic, 

 aphotis'tic {(tftoriariis, one who gives 

 light), growing practically without 

 light, as abyssal organisms may do ; 

 cf. Aphotistes ; Aphotis'tes J, a 

 plant growing in the absence of 

 light, as a Truffle. 



aphotomet'ric (o, not ; <pws, (pwrhs, 

 light ; fifTpov, measure), applied by 

 Strasburger to phototactlc zoospores, 

 which constantly turn the same 

 extremity to the light ; opposed 

 to PHOTOMETRIC ; Aphototax'is ( + 

 Phototaxis), the condition of organ- 

 isms which are unaffected by the 

 stimulus of light ; adj. aphototac'tic ; 

 Aphotot'ropism (-j- Piiototropism), 

 turning away from light. 



Aph'rostase X (d<^P^y. froth ; crrd<Tis, 

 standing), cellular tissue. 



ApVthae {&(pdai, ulcerations in the 

 mouth), the disease known as 

 Thrush, ascribed to Saccharomyces 

 albicans, Keess ; Aphthaphy'tes 

 {(purhu, plant), the Fungi mentioned 

 above as causing the disease. 



Aphydrotax'isCdiro, from ; v5wp, water; 

 ra^is, order), repulsion from water. 



Aphyll'ae (o, without ; <f>v\\ov, leaf), 

 (1) liindlcy's term for Thai.lo- 

 PHYTEs.; (2) plants having only rudi- 

 mentary leaves or none (Schimper) ; 

 aphyirous, -Ins. aphyirose, wanting 

 leaves ; aphyllop'odoas {vovs^^oios, 

 a foot), the stem of /fieraci'uvi when 

 leafy, and without a basal ii^sette of 

 leaves ; Aph ylly, sui)pression of 

 leaves. 



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 



