combining the characters of ).candida and D.sanguinea. 
Another (4ugusto 413; NY), from Hispaniola, appears 
intermediate between D. candida and D. suaveolens, but 
it has yellow flowers. Both hybrids have the unusual 
horn-like calyx appendage of D. cornigera. 
Methysticodendron Amesianum R.E. Schultes in Bot. 
Mus. Leafl. Harvard Univ. 17: 2 (1955) undoubtedly 
belongs with the white-flowered species of tree Daturas. 
It differs from D. candida and D. suaveolens in its nar- 
row linear-ligulate leaves with undulate margins, in the 
distally inflated calyx, the deeply divided, or adesmic, 
corolla having long spatulate lobes; it is, furthermore, 
monstrously different in the distally contorted filaments, 
in the variable number of incompletely coherent styles 
exceeded by the stamens, and in the often three-locular 
ovary with one or more variably developed appendages 
homologous with the styles. n=12. 
Barclay (8) determined the chromosome number as 
2n=24, and the haploid complement is now verified as 
n=12 (Bristol 477, 764, 888, 1112, 1400) as in all tree 
Daturas which have been examined. 
Intensive study of M. Amesianum at the type locality 
in southernmost Colombia suggests the existence of not 
more than thirty-five trees, all in cultivation (4). Most 
of these were found to bear flowers with both two- and 
three-celled ovaries, as in a local cultivar of D. candida’ 
confirming the earlier observations of Theilkuhl (14). 
Despite constant observation during thirteen months, 
no fruit was seen. Schultes recalled his lost collections 
of fruit as ‘‘unarmed, smooth, indehiscent and fusiform, 
about six inches in length and in shape very like the fruit 
of Datura suaveolens’ (12). The fruit size, shape and vari- 
able number of locules imply a relationship with a cultivar 
' An account of the unique Datura cultivars grown by the Sibundoy 
Indians is in preparation. 
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