36-t 



BYTTNERIACE^E. 



[Hypogynous Exogens. 



sexes, which is so frequently observable in Sterculiads and Byttneriads, is an indication 

 of a lower degree of organisation than occurs among Mallowworts, and clearly brings 

 the Malval into contact with the Euphorbial Alliance. 



These are wholly tropical, or from temperate climates. The Lasiopetaleae are Austral- 

 asian, HermanneEe are South African, Dombeyeie African and Asiatic, Eriolsenese exclu- 

 sively Asiatic, and Philippodendrese from New Zealand, (not Nepal, as has been stated 

 by Mr. Poiteau) ; Byttnerese are both Asiatic and American. 



Beyond all other products Cacao or Cocoa, the chief ingredient in Chocolate, is remark- 

 able in this Order. It is the seed of Theobroma Cacao, a small tree of which whole forests 

 occur in Demerara. An ardent spirit is distilled from the pulp of the fruit. The Wal- 

 theria Douradinha is used in Brazil as a remedy for venereal disorders, for which its 

 very mucilaginous nature renders it proper. The fruit of Guazuma ulmifolia is filled 

 with a sweet and agreeable mucilage, which the Brazilians suck with much pleasure. 

 In Martinique the young bark is used to clarify sugar, for which the copious mucilage 

 it yields when macerated qualifies it. In the same island the infusion of the old bark is 

 esteemed as a sudorific, and useful in cutaueous diseases. The bark of Kydia calycina is 

 applied in India to the same purpose. The fibrous tissue of the bark of many species 

 is so tough as to be well adapted for manufacturing into cordage ; this is more especially 

 the case with Microkena spectabilis, and Abroma augustum. The bark of Dombeya 

 spectabilis is made into ropes in Madagascar. The Pterospermums are all mucilaginous. 



GENERA. 



I. Lasiopetaleje. 



Seringia, Gay. 



Gaya, Spreng. 

 Guichenotia. &ay. 

 Thomasia, Gay. 

 Leucothamnus, Lindl. 

 Lasiopetalum , Sin ilk. 

 Oorethrostyiis, Endl. 

 Keraudrenia, Gay. 

 Sarotes, Lindl. 



II. BvTTNERKJ-:. 



Rulingia, K. Br. 

 Coinmersonia, Font. 



? Medusa, Lour. 



JUrgenHa, Spreng. 

 Abroma, Jacq. 



Ambroma, Linn. f. 



Hastingia, Konig. 

 Byttneria, Loffl. 



Chcetieu, Jacq. 



Heterophyllum, Boj. 



Telfairia, Newm. 

 Ayenia, Linn. 



Daycnia, Mill. 

 Herrania, Goudot. 



Lightia, Schomb. 

 Theobroma, Linn. 



Cacao, Tournef. 

 Guazuma, Plum. 



Bubroma, Schreb. 

 Kleinhovia, Linn. 

 Actinopliora, Wall. 

 Pentaglottis, Wall. 



III. IlFiRMANNE^E. 



Waltheria, Linn. 



Lophanthus, Forst. 



Astropus, Spreng. 

 Melochia, Linn. 

 Riedlea, Vent. 



Riedleia, DC. 



Althcria, Thouars. 



Lochennia, Am. 

 Physodium, Presl. 

 Hermannia, Linn. 

 Mahernia, Linn. 



IV. DoMBEYE.t. 



Ruizia, Cav. 

 Astyria, Lindl. 

 Pentapetes, Linn. 



Moranda, Scop. 

 Brotera, Cav. 



Sprengelia, Schult. 



Vialia, Vis. 

 Assonia, Car. 



KUnigia, Commers. 



Vahiia, Dalil. 

 Dombeya, Cav. 

 Paulowilbelmia, Hochsl. 

 Xeropetalum, Dili!. 

 Leeuwenhoeckia ,\L ,}\&\ . 

 Melhania, Forsk. 

 Astrapaea, Lindl. 



Hilseribergia, Boj. 



Glossostemon, Dcsfont. 

 Trochetia, DC. 

 Pterospermum, Schreb. 



Velaga, Adans. 



Velago, Gartn. 

 Pterolttna, l.C. 

 Kydia, Roxb. 



V. Eriol*.ve«. 



Eriolsena, DC. 

 Schillera, Reichcnb. 



Microlcena, Wall. 



Wallichia, DC. 



Jackia, Spreng. 



? Visenia, Houtt. 



WUenia, Gmel. 



All • a rodendron, Rein*. 



Glossospermum, Wall. 

 ?Exitelia, Blum. 



Maranthts, Blum. 



VI. PHILIPPODENDRE.t. 



Philippodendron, Poit. 



Numbers. Gen. 45. Sp. 400. 



Position.— Sterculiacese. — Byttneriaoe.e. — Tiliaceae. 



Eu.phorhiacece. 



ADDITIONAL GENERA, &c. 



Cardiostegia, Pred. near Melhania. 

 Melhania — Brotera, according to \v bh 



Rhynchostemon, Gteetz. near Lasiopetalum. 

 Macarthuria, EndL near Byttneria. 



