364 



BYTTNERIACE^. 



[HVPOGYNOUS EXOGENS. 



sexes, wliich is so frequently obsem'able in Sterculiads and Byttneriads, is an indication 

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

 the Malval mto contact with the Euphorbial Alhance. 



These are wholly tropical, or from temperate climates. The Lasiopetaleae are Austi*al- 

 asian, Hermannete are South African, Dombeyese African and Asiatic, Eriolsenese exclu- 

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

 by Mr. Poiteau) ; Byttuerese 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 Dom-adinha is used in Brazil as a remedy for venereal disorders, for which its 

 very mucilagmous natui'e renders it proper. The fruit of Guazuma ulmifolia is filled 

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

 In ]\Iartinique the young bark is used to clarify sugar, for which the copious mucilage 

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

 esteemed as a sudorific, and useful in cutaneous 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 ; tins is more especially 

 the case^mth ]\Iicrol£ena spectabiUs, and Abroma augustum. The bark of Dombeya 

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



GENERA. 



I. Lastopetale^, 



Seringia, Gay. 



Gay a, Spreng. 

 Gmchenotia, Gay. 

 Thomasia, Gay. 

 Leucothamnus, Lindl. 

 Lasiopetalum, Smith. 

 Corethrostylis, Endl. 

 Keraudrenia, Gay. 

 Sarotes, Lindl. 

 Fleischeria, Steud. 



II. Byttnere.e. 



Rulingia, R. Br. 

 Commersonia, Forst. 



9 Medusa, Lour. 



Jilrgensia, Spreng. 

 Abroma, Jacq. 



Ambroma, Linn. f. 



Hastingta, Konig. 

 Bjiitneria, Lqffl. 



dicetoea, Jacq. 



Heterophyllum, Boj. 



Telfair ia, Newm. 

 Ayenia, Linn. 



Dayenia, Mill. 

 Herrania, Goudot. 



Lightia, Schomb. 

 Theobroma, Linn. 



Cacao, Tom-nef. 

 Guazuma, Plum. 



Bubroma, Schreb. 

 Kleinhovia, Linn. 

 Actinophora, Wall. 

 Pentaglottis, Wall. 



III. Hermanxe^. 



Waltheria, Linn. 



Lophanthus, Forst. 



Asfropus, Spreng. 

 Melochia, Linn. 

 Riedlea, Vent. 



Eicdleia, DC. 



Altheria, Thouars. 



Lochennia, Am. 

 Physodium, Presl, 

 Hermannia, Linn. 

 Mahernia, Linn. 



IV. Dombeye.b. 



Ruizia, Cav. 

 Astyria, Lindl. 

 Pentapetes, Linn. 



Moranda, Scop. 

 Brotera, Cav. 



Sprengelia, Schult. 



Vialia, Vis. 

 Assonia, Cav, 



Konixjia, Commers. 



Vahiia, Dahl. 

 Dombeya, Cav. 

 Paulowilhelmia, Hochst. 

 Xeropetalum, Delil. 

 Leeuivenhoeckia,^.Mey. 

 ISIelhania, Forsk. 

 Astrapaea, Lindl. 



Hilsenbcrgiu, Boj. 



Glossostemon, Besfont. 

 Trochetia, BC. 

 Pterospermum, Schreb. 



Velaga, Adans. 



Velago, Gartn. 



Pterolcena, DC. 

 Kydia, Roxb. 



V. Eriol^ne^, 

 Erioleena, BC. 

 Schillera, Reichenb. 



Microlcena, Wall. 



Wallichia, DC. 



Jackia, Spreng. 



? Visenia, Houtt. 



Wisenia, Gmel. 



Aleurodeixdron ,^Q\nvi . 



Glossospermum, Wall. 

 ? Exitelia, Blum. 



Maranthes, Blum. 



VI. PHILIPPODENDREii:. 



Philippodendron, Poit. 



Numbers. Gen. 45. Sp. 400. 



Position.— Sterculiacese. — Byttneriace^. — Tihacese. 

 EuphorhiacecB. 



