ARACATCHA

n. See ARRACACIA, ARACEZE (Lat.), n. f. pl. A?r(aSr)-a(a3)’se2(ke?)-e(a3-e2), From the genus-name Arum (q. v.). Fr., aracées. Ger., Arongemwdchse. Syn.: Aroidew. The aroids; of Necker, Lindley, and others, an order of monocotyledons belonging to the series Nudifloræ, comprising herbs that contain a volatile acrid epeincinle and have a crete rhizome or corm rich in starch, e flowers, which are usual ly diclinous. are densely arranged in a spadix, often embraced by a large spathe, and are either naked or surrounded by a perianth of from four to six scales. The stamens are bypogynons. and the stigma is se ile. Lindley divided the A. into four tribes, the Copioaes the Dracunculee, the Caladiew, and the Anaporeæ, to which Endlicher added a fifth, the Pistiaceæ, and Mei ner, a sixth, the Lemnaceæ. This last tribe is usually regarded as a separate order. Brongniart divided the A. into the Callaceæ and the Colocasieæ. Schott, one of the best authorities upon the A., divided them into the Monoclinous A., comprising the tribes Orontieæ and Calleæ, and the Diclinous A., including 2 sections: (1) The Filament ate, comprising the tribe Stylo chit oneæ; and (2) The Egitamentate, comprising the tribes Alleluchieæ, Arisareæ, Dracunculeæ, Zomiocarpeæ, and Pythonieæ, grouped in the subsection Steno zeugmaticæ, and the tribes Caladiew, Philodendreæ, Richardieæ, and Asterostigmeæ, grouped in the subsection Pachyzeugmatice. Engler divides the A. into the sub-families, Pothoideæ, Monsteroidew, Lasioideæ, Philodendroideæ, Aglaonemoideæ, Col oideæ, Staurostigmoideæ, Aroideæ, Pistioidew, and Lemmoideæ (the last corresponding to the order Lemnaceæ of most systems); and these are divided into a large number of tribes and subtribes, Bentham and Hooker divide the A. (Aroiïdeæ) into three series: A, those with moneecious flowers and no perianth, including the tribes Arineæ, Stilochitoneæ, Zomiocarpeæ, thonieæ, Colocasieæ, Philodendreæ, l)î‘eîfi'enbachieæ. and Spathicarpeæ; B, those with hermaphrodite flowers and no perianth, comprising the tribe Catleæ; C, those with flowers all hermaphrodite and a perianth of scales, including the tribes Zomioculcasieæ and Orontiew. The A. of Le Maout and Decaisne are a tribe of the Aroideæ (= A. of this work) corresponding to the diclinous A. of Schott and including the sections Anaporeæ, Colocasieæ, Dracuneutineæ, Cryptocoryneæ, and Pistiaceæ. [B, 34, 42, 121, 168, 170, 216.]