654 GrRicGs: SPECIES OF HELICONIA 
Heliconia elongata is closest to H. humilis but differs in stature, 
in the shape of the leaves and in having nearly twice as many 
branch-bracts, which are not nearly as highly colored, those of 
HT, humilis being deep scarlet with only a narrow margin of green 
near the tip. It also resembles H. rutila (see below), but differs 
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Fic. 2. Heliconia elongata sp. nov. The type clump, showing how conspic- 
uously erect are the inflorescences, regardless of the stem angle. ‘Traced from a photo- 
graph. 
in the narrow perianth-segment, the wider more numerous §7¢¢” 
and red branch-bracts and the shape of the leaves. 
In studying Heliconia elongata, it has been necessary to deter- 
mine 1. Bihai. That species is the type of the genus and for a” 
long time was the only one recognized. As is not unusual * 
monotypic genera, to the one species were referred all the Heli- 
conias discovered for a long time. In this way 7. Bihat became 
