$34 AROIDEiE. 



Stamina in nudis aggregata; in calycstis perianthii lobis 

 opposita, ssepiusqne numero aequalia, jlntherh 

 posticis. 



Ouaria in diclmibus in eodem v. distincto spadice infe- 

 riora, aggregata : in hermaphroditis intra perian- 

 thium solitaria, libera, l — 3-locularia, 1-polysper- 

 ma ; ovulis erectis, nunc inversis v, parietalibus. 

 Stylus 0, v. simplex. Stig?na 1. 



Pericarpiurri clausum, baccatum v. nucamentaeeum. 



§emina albuminosa^ raro (germinatione incepta?) exal- 

 buminosa. 



■Embryo in axi albuminis, rectus, teres, monocotyledo- 

 neus. 



Radicvla obtusa, umbilicum spectans v. raro eidem cqn- 

 traria. Cotyledon teres, hinc (extus in pericarpio 

 polyspermo,) runa brevi longitudinaii radiculse ap- 

 proximata. Plumula 2-3-phyIia, foliolis margine 

 involutis, exteriore cotyledoni opposito elusdem 

 rimae marginibus amplexo, plus minus denudato '. 

 interiora opposita amplexante. 

 Herbce v. Suffrutices. Padix. saepe tuberosa v. in- 

 crassata. Folia vaginantia, simplicia v. composila, 

 saepius omnia radicalia. Spadix terminalis v. late- 

 ralis v radicalis, plerumquc solitarius spathaque 

 involutus, nunc nudus. 



Obs. I. Character unicus totr ordini communis in Embrybne 

 positus est, qui ab omnibus monocotyledonibus siructura 

 longe diversus. In Gramineis plumula extra cotyle- 

 donem quoqueexstat ; sed hae, Embryone extra albumen 

 sito, cotvledone peculiari «et vagiua propria plumulae ab 

 Aroideis facile distinguuntur. 



Structura^supra descriptat,pi'imum observavi in Calld palustri: 

 dein confirmavi in variis speciebus Ari, in Acoro gramineo, 

 in Gymnostachi, in Potko et in Sparganii triplici specie. 

 Jn Tijphd fateri oportet, (quamvis forsan ob ccilitatem 

 panium) rimam haud observare licuit. 



In nonnullis hujus ordinis uti in Dracontlo polyphyllo etfoe- 

 tido semina exalbuminosa, plumula (punctum genninans) 

 lateralis, nuda, saepius solitaria sed quandoque duplex v. 

 triplex ! e squamulis imbricatis constat. In Dracontio po^ 

 lyphyllo squamulae extimae, germiuatione incepta, cito 

 marcescunt, aliae paulb majores interiores dein in conspec- 



tum 



