— 56 — 



caulescente. Pliyllodia v. folia e caudice solitaria v. alterna et 

 terminalia , petiolo basi vaginante, lamina passim maxima, 

 cordata, sagittata, nervis saepe validis, pinnatis, palmatis, pe- 

 datis peltatisve , integerrima v. pertusa et varie dissecta , no- 

 vella convoluta. Spadix termin. v. axillar., simplex, basi, ra- 

 rius rhachi spathce monophyllae , passim coloratae , persist. v. 

 deciduae, raro deficientes v. folio simillimae (Orontium, Aco- 

 rus) adnatus, e toto florifer v. axi superne denudata. Flores 

 ebracteati, androgyni, rarius hermaphroditi: hi sepalis •'1-6-3, 

 staminibus oppositis totidem et monogyni; illi nudi, ad sta- 

 mina et pistilla solitaria reducti, androgyni, rariss. diclini, 

 Dunc distincti et continui vel paragoniis sejuncti, 0* su- 

 perioribus, nunc intermixti, c? crebrioribus. Stamina libera 

 v. varie interse connata : antherae sess. v. filamentis suffultae, 

 extrorsae, loculis saepe binis connexivo crasso imersis, longi- 

 trorsum v. vertice dehiscentib. et pollen catenatim congluti- 

 natum eructantibus. Ovaria uni-rarius 2-3-qo -locularia, saepiss. 

 aggregata , libcra v. connata ; ovulis solitar. 2, 00 , basilar. v. 

 parietalibus, erectis, adscend., horiz. v. pendulis, atropis, ra- 

 rius campylo- v. anatropis ; stigm. capitato v. discoideo, raro 

 lobato, sessili v. styloso. Fructus baccati <J , indehisc, I-00- 

 spermi; semina subglob. v. angulata, testa coriacea, crassa <\ 

 albumen copios., carnos. v. farinac, raro O: embryo tunc hip- 

 pocrepicus, alias rectus, teretiusculus, saepius antitropus, cum 

 rimula longitudinali , quae plumulam 2 - 5 - phyllam fovet. 

 Genera 46, spec 286. K u n t h. 



a. AmhrosiniecB riob. Hbae caudice stolonifero v. tube- 



roso ; foliis integris nervosis. Spadix androgynus n adna- 



tus ; antherae sessiles in apice v. latere axeos et remotae ab 

 ovario styloso, solitario v. pluribus ad basin axis verticillatis 

 et connatis ; ovula co atropa, ascend. v. horizontalia ; para- 

 gonia vix ulla; sem. albuminosa. Gen. 4. sp. 16: — Pistia, 

 Ambrosinia ; Cryptocorjney Stjlochaeton. 



