21. ‘Culebra’ n. cv. Plates LX, LXI. 
Methysticodendron Amesianum R. K. Schultes Bot. 
Mus. Leafl. Harvard Univ. 17: 2. 1955. 
Leaves narrowly linear-ligulate, ratio of width to 
length .086-.092, margin undulate: calyx distally in- 
flated, 10.8-15.8 cm. ; corolla shortest among the culti- 
vars, 15, 1—24.5 em. (excluding the relatively short teeth), 
deeply divided (through { of total length) into long spat- 
ulate lobes; stamens 12-16 em. (including their adnation 
to corolla), the filaments distally and irregularly con- 
torted, anthers 25-82 mm.; pistil shortest among the 
cultivars, 9-12.1 cm., with a variable number (2-4) of 
incompletely coherent styles exceeded by the stamens, 
the ovary often three-locular and with one or more vari- 
ably developed appendages homologous with the styles. 
Fruiting rarely or never. N =12 (3,7). (For an exhaus- 
tive and illustrated description, including details of pol- 
len morphology, see Schultes 1955. 
While strikingly different from all other Datura cul- 
tivars in the Valley of Sibundoy, there is little justifica- 
tion for excluding cv. Culebra from the genus Datura 
(3, 5, 7, 85, 87). Aberrant forms bearing a resemblance 
to this one have been observed in D. Stramonium, and 
also ina single, but very distinct, tree Datura collection 
from elsewhere in Colombia (7). 
The origin of ‘Culebra’ is unknown, but it may safely 
be assumed to derive from one of the white flowered tree 
Daturas, and it is tentatively placed with D. candida. 
With the exception of Datura ‘Andrés’, a putative hy- 
brid between D. candida and D. suaveolens Humb. & 
Bonpl. ex Willd., all of the other white flowered culti- 
vars in the Valley belong with D. candida. As with 
these cultivars, ‘Culebra’ is known only from the Valley 
of Sibundoy, and hence it can be considered a member 
of the same JD. candida complex for the present. 
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