308 Part III. Chapter 3. 
Sechium edule Sw. South Mexico, Panama, West Indies, tropic South America. 
Ipomoea acuminata Roem. & Schult. Guatemala, West Indies to Brazil. 
> capillacea Don. (I. armata Roem. & Schult.). Arizona, New Mexico, 
North Mexico, South Mexico, Guatemala, Colombia, Venezuela. 
» cathartica Poir. Florida, Mexico, Bahamas, Jamaica, St. Vincent, Brazil. 
» hederacea Jacq. Pennsylvania to Florida, Louisiana, Mexico, Central 
America, tropic America, West Indies. 
> longicuspis Meissn. (I. bicolor Lam.) Mexico, West Indies, to Peru 
and Brazil. = 
» purpurea Roth. Texas to California, Mexico, Colombia, Venezuela, : 
West Indies. x 
» quinquefolia L. Guatemala, Nicaragua, Panama, southward to Peru j 
and Bolivia, West Indies. Se 
» setifera Poir. Guatemala, Nicaragua, Panama, West Indies, Guiana to 
North Brazil. 
> sidaefolia Choisy. South Mexico, Panama, West Indies, north part 
of South America. 
» sinuata Ort. Georgia to Texas, North Mexico, South Mexico, Guate- 
mala, West Indies, Guiana, Brazil. 
> umbellata Mey. South Mexico, Guatemala, Nicaragua, tropic south 
America, West Indies. 
Escobedia scabrifolia Ruiz et Pav. South Mexico, Colombia, to Peru, Guiana, 
razil. 
Lippia americana L. Panama, Colombia, Ecuador. 
» geminata H. B. K. Texas, North Mexico, South Mexico, Nicaragua, 
Costa Rica, Panama, South America, West Indies. | 
>. reptans H.B.K. South Mexico, West Indies to Brazil and Peru. 
Stachytarpheta cajanensis Vahl. South Mexico, West Indies southward to Brazil. 
> jamaicensis Vahl ($. indica Vahl). Florida, Mexico, Central 
merica, West Indies, south to Brazil. 
» mutabilis Vahl. Mexico, Cuba, Trinidad, Guiana. 
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1: 
cases appear to have spread from that center to other areas. According 0. 
him the tropic forms had their primitive home in Brazil, and it is precisely Ei; 
on the ancient mountains of this region, which perhaps formed one of her 
greatest mountain regions of the earth, their summits exceeding in a height an) 
now existing in the world, and worn down by erosion in a region of heavy R 
ı) Barı, Jonn: Notes of a Naturalist in South America. London 1887: 313—319- 
