Afchidimn 



athiorhodaoeom 



higher plants which bears the 

 sporangia ; Arckigon'iophore {yovo^, 

 offspring ; <f)opeoj, I bear), a gameto- 

 phore in cryptogams borne on a 

 specialized branch with a terminal 

 receptacle having female organs ; 

 cf. Antheridiophore ; Arcbili'chens, 

 lichens in which the gonidia are 

 bright green ; Archigym'nosperms, 

 gymnosperms fertilized by anthero- 

 zoids (Jeffrey) ; Arch'iplast {irXaoTos, 

 formed): the protoplasmic unit of 

 Cyanophyceae (Nadson) ; Archi- 

 sto'ma [cTTofMa, a mouth), a primitive 

 oral opening (Janet). 



arched, bow-shaped. 



arctalp'ine, Clements's term for alpine 

 plants in the arctic zone. 



Arctostaphyle'tum, an association of 

 Arctosiaphylus Adans. 



-are, p. 33, now restricted to the 

 Clan (Clements). 



A'rea, add, (5) ground occupied by a 

 formation or association (Water- 

 man) ; attachment ~, the junction 

 on the anterior schizont of Peridineae 

 (Kofoid); ax'ial '^, the smooth 

 surface between the margins of 

 diatoms ; cent'ral ~, hyaline space 

 round the nodule of a diatom valve ; 

 lat'eral '^, occasional blank marginal 

 spaces of a diatom (West) ; optimal 

 r^, that best adapted for the 

 growth of a species (Warming) ; 

 cf. Age and Area ; a'real, belonging 

 to the areas enclosed by the reticu- 

 late vessels of leaves (Barton). 



are'coid (efSo?, resemblance), like 

 the Areca palm. 



Areg, (1), sand-desert; (2) dunes in 

 Algeria. 



ar'illated, provided with an Aril. 



Ari'zophytes (a privative ; piia, a 

 root ; <l>vTov, a plant), term to in- 

 clude Bryophytes and Thallo- 

 phytes. 



Aroideorogy {Xoyos, discourse), a 

 treatise on Aroids. 



Arrhe'noplasm {dpprqv, male ; -nXdaixa, 

 formed), male protoplasm ; cf. 

 Thelyplasm. 



Arroy'o (Span.), a watercourse, 

 especially when dry. 



Artemisie'tum, an association of 

 Artemisia Linn. 



arthoniomorph'ic {fiop<f>-q, form), 

 arthonioid. 



arthrodact'yloas {dpSpov, a joint; 

 bdfcTvXos, a finger), the ultimate 

 rays of Nitella Ag., composed of 

 more than one cell apiece. 



art'ioploid, applied to " even mul- 

 tiples of the gametophytic number '* 

 (Jeffrey) ; Artioploi'dy is the state : 



cf. PERISSOPLOID. 



-as, patronymic sufl&x, as " Erio- 

 gonas " (Clements). 



Ascoli'chenes, add, defined as in 

 symbiosis with algae. 



Asco'mata, pi. of Ascoma. 



Asexual'ity (a, privative ; + sexfal), 

 destitute of sex. 



Asincronog'onism {avvxpovos, coeval ; 

 yovos, offspring), Delpino's term for 

 Dichogamy. 



Assim'ilates, cf. Assimilata, perfected 

 products of the plant's vital 

 functions. 



Associa'tion, add, (2), or approxima- 

 tion, the pairing of two threads or 

 half- univalent spiremes to form 

 a univalent chromosome (Digby) ; 

 compliment'ary ~ ,where two or more 

 avoid competition by developing 

 at different times or at different 

 depths, as Holcus, Pier is and S cilia 

 (Woodhead) ; ~ Com'plex, a union 

 of associations to a phytogeo- 

 graphical unit; ^ Frag'ments* 

 varied aspects from normal or 

 optimal (Braun-Blanquet) ; '^ 

 Types, formed from the series of 

 associations which inhabit them 

 (Nichols). 



Assoc'ies {associo, I join with), 

 developmental units of consocies 

 (Clements) ; transitory units (Tans- 

 ley). 



Asterice'tum, an association of Aster 

 Tourn. 



At'avism, false, Vicinism. 



Atelio'sis {areX-qs, imperfect), a zoo- 

 logical term used by Gates for 

 dwarfs of normal proportions but 

 reduced size ; adj. ateliot'ic. 



athiorhoda'ceous (a, primitive; ^iV, 



422 



