corolla which barely exceeds the calyx. Neither the gy- 
noecium nor any fruit of this curiosity has been examined. 
Extra perianth whorls occur in both the tree and the 
herbaceous Daturas. Specimens of D. candida with 
double corollas are known from Bermuda (Collins 441; 
NY), Mexico (Schultes & Reko 455; ECON, GH), Costa 
Rica (Heiser 3583; IND), Chile (Cameron s.n.; US), 
Argentina (Venturi 8495; A) and the Philippines (Sut 
s.n.; GH). <A double-corollate form from California 
(Wight 1661; US) represents apparently a hybrid be- 
tween D. candida and D. sanguinea. In the double 
forms, the inner corolla may be either longer, shorter or 
equal in length to the outer. A form with a cluster of 
numerous spatulate staminodia is represented by Model 
290 in the Ware Collection of Glass Flowers at the 
Harvard Botanical Museum. 
In addition to these conspicuous anomalies and to 
those described in the ‘‘species’’ discussed above, there 
are many collections representing additional variability 
in the tree Daturas. Among the variations are very long, 
ochraceous flowers (Bristol 1297; GH), S-curved styles 
(Bristol 1314; GH) and variously erose leaves (Garcia-B. 
4640, US; Idrobo 2224, COL; Bristol 1268, ECON) 
in D. candida, and pink flowers (Bristol 1445; GH) in 
D. sanguinea. Several trees at Santo Domingo de los 
Colorados, Ecuador, have brick red, as well as white, 
flowers which reach or exceed one-half meter in length 
(Bristol 1734, 1736; ECON). 
As our knowledge of the tree Daturas increases, it is 
certain that more novel, perhaps striking and _ highly 
attractive cultivars will be found. We can hope that 
many more of the tree Datura cultivars will become es- 
tablished outside of the northern Andes, for the abun- 
dance of their huge, colorful and fragrant flowers deserves 
a much wider appreciation. The origin of the group and 
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