:ed. spach. — Hippocastanearum rensio. 5 1 



Arbores sive/rw^/cej». Ramuli nodoso-articulati. Latex aqueiis. 



Folia opposita, digitata (S-g-foliolata); foliola petiolulata v. 

 sessilia, serrata, penninervia; petioluli basi articulât! et dilatati; 

 petiolus longus, basi dilatatus, articulatns, semi amplexicaulis; 

 stipiilœ nullae ; gemmae axillares e squamis imbricatis. 



Flores polygami (in eodem individuo hermaphroditi et pis- 

 tilli abortii masciili ), irregulares. Inflorescentia terminalis. 

 ïhyrsus (v. nonnumquam panicula depauperata) solitarius, pe- 

 dunculatus, erectus, aphyllus, compositus e racemulis sparsis, 

 pedunculatis, plerumque bifidis v. subcorymbosis; pedicelli 

 alterni v. sparsi , erecti v. subpatentes, unilatérales, supra basin 

 articulati, basi i-bracteolati; bracteolae minutas, membranaceœ , 

 caducae. 



Caljx inadhœrens, circumscisso-deciduus, subcarapanula- 

 tus V. tubulosus , obliquus , basi postice gibbus, o-lobus (in unica 

 specicbilabialus); lobi inœquilongi, obtusi, sestivatione margi- 

 nibus imbricati : i superior, caeteris longior; a latérales duobus 

 inferioribus breviores. 



ISectarium (Discus) hypogynum, annulare, nonnunquam lo- 

 batum. 



Petala 5 ( 2 superiora , a lateralia, i inferius), vel plerum- 

 que infimi abortu 4, lobis calycinis alterna, sub nectario inserta , 

 inaequilonga, unguiculata, decidua, plerumque dissimilia; ces- 

 tivatio imbricativa. 



Stamina 6-S (plerumque 7 ), sub nectario inserta, libéra, uni- 

 serialia, inaequilonga. Filamenta subulata vel filiformia, saepis- 

 sime arcuata. Antberœ ellipticœ vel oblongae , versatiles, thecis 

 a appositis, parallelis, rima longitudinal! dehiscentibus; connec- 

 tivum in appendicem apicilarem glanduliformeni productum. 



Pistillum .* Ovarium trigonum , subcylindraceum^ trilocu- 

 lare : loculis biovulatis; ovula superposita, angulo interno af- 

 fixa ; ovulum superius appendens; inferius adscendens. Stylus 

 indivisus, gracilis , superne attenuatus et subrecurvus. Stigma 

 terminale, acutum. 



Pericarpium : capsula coriacea, subglobosa, loculicido-2-3- 

 valvis, 3-locularis sœpiusve abortu i-2-locularis , i-3-sperma. 



Semina maxima , subglobosa , varie compressa et subangu- 



4. 



