98 
the original drawing preserved in the Candollean Herbarium, 
and —— in the form of a tracing by Alphonse De Candolle 
in 1874 
It is not known where the type species, Amoreuxia palmatifida 
was collected: ‘‘Sessé and Mocifio spent eight years, from 
1795 to 1804, in the botanical exploration of Mexico and the 
adjoining countries, from Punta Arenas in Costa Rica to the 
mouth of the river Hiaqui or Yaqui in north-western Mexico.” + 
Tn 1880 Schlechtendal and Chamisso based a new genus and 
species, Euryanthe Schiedeana, on specimens collected by Schiede 
and Deppe between Manantial and Paso de Ovejas during a 
journey from Vera Cruz to Jalapa.j Huryanthe was reduced to 
Amoreuxia by Planchon in 1847.§ Planchon was at first inclined 
to reduce H. Schiedeana to A. palmatifida,|| but eventually 
decided to treat them as separate species. Under the new 
combination Amoreuxia Schiedeana he quoted (1) Schiede’s 
specimens, which he had not seen, and the synonym Euryanthe 
Schiedeana; (2) Coulter’s No. 789 from Sonora Alta, Mexico; 
(3) specimens collected by Purdie at Ibagué in Colombia. The 
plate illustrating his paper was drawn from the Colombian 
material. 
Five years later Asa Gray] reterred to A. Schiedeana specimens 
collected by Charles Wright (No. 79) on prairies near the San 
Pedro River, Western Texas. In the following year, Gray based 
a new species, A. Wrightii, on Wright’s Texas material, and 
applied the name A. Schiedeana to specimens collected in Sonora, 
Mexico, by Wright (No. 916) and Coulter.** The diagnostic 
characters of the two species were as follows :— 
A. Schiedeana. Leaves 7—-9-partite, with spathulate segments. 
Capsule 1 inch long. Seeds reniform.—Sonora, Vera Cruz, 
Colombia. 
A. Wrightti. Leaves 5- or sub- Ech with obovate 
segments, cuneate into the base. Capsule 14-2 inches long. 
Seeds obovoid.—Western Texas, Nuevo Leon (Monterey): . 
Gray accepted the geographical distribution ascribed to 
A. Schiedeana by Planchon, and cited A. palmatifida, D.C. as 
being | oe synonymous; he subsequently adopted the 
name A. palmatifida for the species, and treated A. Schiedeana 
as a belles TT 
ies Dess. FJ. Mex. Moc. Sessé, t. 1171 (1874). 
; ae Biol. Centr -Amer., Bot. iv. p. 120 (1887). 
bi nog Ee p. 224 (1880), Both here and in Schiede’s account of 
uis journey (lc. iv. p. : 1. 3; 1829), the locality is misprinted 
‘*Marantial.”” A good map of the route aes Vera Cruz and Xalapa 
was given by Humboldt, Atlas Geogr. Mex 
ee |. Lond. Journ. Bot. vi. p. 139 1eary 
ij 
| Fs Wright. i. i 29 (1852). 
** P], Wright. Se (1853). 
tt A. Gray, rat Pl. N. Am. ed. Robinson i. ve 1, p. 207 (1895). 
