~ 
laterally flattened, or 4~5-sided to nearly round with 2 
or 4 longitudinal sulci: seeds verruculose and lacking ¢ 
_ 
greatly thickened testa. 
la. ‘Guamuco’ n. cv. Plate LIV. 
Calyx broad, 1 8-lobed, 6.7-12.2 em. long; corolla 
17.6-21.2 cm., yellow at the middle, red toward the 
limb; stamens 15.7-19.2 em. (including their adnation 
to corolla), anthers 15-18 mm. ; pistil 15.5-19 em. : fruit 
ovoid to conical, bisulcate, with half-persistent calyx, 
rare. N=12 (Bristol 1114). 
The pollen very closely resembles that of D. candida. 
Kxamination of 500 microspores of one plant showed 
58.8 per cent to be abnormal. 
Common names: Guamuco, Guamucu borrachera. 
Guamuco is anon-Kamsa term, also used occasionally 
for Spigelia pedunculata A BK. It may relate to euambia 
‘poison’, for the Sibundoy know both plants to be highly 
poisonous, 
CotomBia: Comisaria del Putumayo: Valle de Sibundoy, alt. ca. 
2200 m.—1.5 km. S Sibundoy. “Tree 3 m.: corolla yellow below, 
reddish orange above, veins yellow above; anthers white. In cultiva- 
tion: very rare.”’ 20-XII-1962, 479* (ECON), —San Andrés. ***“Gua- 
muco’. Shrub 2.5 m.; corolla orange-red, limb recurved. Cultivated, 
infreq.’” 18-IIT-1963, 65.7. (COL, ECON, PASTO, US).—3-5 kms. 
S Sibundoy. ** ‘Guamuca borrachera’. Tree 3.5 m.; a few lvs. en- 
tire; corolla tube green, becoming yellow; throat and limb red, be- 
coming orange during anthesis; anthers white, pollen abundant: no 
fruit. Indian garden, very infreq.’’ 12-VI-1963, ///4 (COL, ECON, 
BISH, PASTO,S, US). —2 kms. SE Sibundoy. **‘Guamuco’. Shrub 
2m.; corolla tube green, becoming light orange, limb and throat 
deep red, becoming lighter. Indian houseyard, very infreq.”* 27- 
VILI-1968, 7345 (COL).—Colén. ***‘Guamuca borrachera’. Tree 4 
m., trunk diam. 23 em., young bark brown: calyx slightly purplish ; 
corolla red-orange except greenish yellow where emerging from calyx, 
and the ribs yellow, limb recurved; fr. ovoid or triangular, acuminate 
with 2 furrows, the calyx half-persistent ; seeds dark brown,.’’ 23-IX- 
19638, 1420 (COL, ECON, BISH, kK, PASTO, US).—Sibundoy. 29- 
V-1946, Schultes & Villarreal 7689 (COL, ECON, US). 
* Collection numbers are those of the author, unless otherwise specified. 
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