Lophospermum Rhodochiton D. Don in Sweet Brit. 
Fl. Gard. n.s., 8 (1884) t. 250. 
Zucearini, who first grew this plant from seed in 
Europe, originally believed that it represented a new 
genus, and he sent out seeds of it under the unpublished 
name ‘‘Rhodochiton volubile.”’ Referring to this use of 
the name, Zuccarini later wrote (1): ‘‘Ich hielt sie an- 
fangs, die Dons Gattungscharacter in einigen Dingen 
abweicht, fiir ein neues Genus und versendete die im 
Sommer 1829 gewonnenen Samen unter dem Namen 
Rhodochiton volubile an mehrerer Giirten.”’ 
With the seeds, he sent out a description of the plant 
to Otto and Dietrich who shortly thereafter published 
the name Rhodochiton volubile, together with the de- 
scription which Zuccarini had communicated to them. 
In 1882, Zuccarini (1) altered his opinion concerning 
the generic status of the plant and published a deseription 
of it under the name Lophospermum atro-sanguineum, 
apparently unaware that Otto and Dietrich had already 
validated the name Rhodochiton volubile. 
Zucearini was not alone in believing that Rhodochiton 
volubile represented a species of Lophospermum, for D. 
Don described this plant in 1834 as Lophospermum Rho- 
dochiton. 
Munz (2), the most recent monographer of the section 
of the Scrophulariaceae to which Rhodochiton belongs, 
maintains Rhodochiton as a monotypic genus. 
FIELD COLLECTIONS OF RHODOCHITON VOLUBILE:! 
Mexico: Oaxaca, District of Villa Alta, Llano Verde near San 
Juan Juquila, long. 96° 17’, lat. 17° 10’, July 1839, H.Galeotti 1069 ; 
District of Villa Alta, San Juan Juquila, long. 96° 17’, lat. 17° 10/, 
1839, Hartweg s.n.; ‘‘Oaxaca’’, 1894, Nelson s.n.; District of Cuicat- 
lin, between San Juan Zautla and Papalo Concepcién, long. 96°45’, 
lat. 17° 52’, June 16-22, 1898, Conzatti & Gonsdlez 756; District of 
Ixtlin, Cerro Malacate, long. 96° 20/, lat. 17° 19’, alt. 2300-2500 
m., June 13, 1989, Schultes 661. 
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