omnino irregulariter fimbriolatae, circiter 8 mm. longae 
sed saepe leviter inaequales. Sepala quinque hyalino- 
membranacea, omnino glabra, ovato-lanceolata, 8 mm. 
longa, 1 mm. lata, apice longe acutissima, margine in- 
tegra, valde concava. Petala quinque, tenuiter membra- 
nacea, ovata, circiter 8 mm. longa, basi 1.5 mm. et apice 
1 mm. lata, apice rotundata, margine integra, nervis 
numerosis percursa, basi alba, apicem versus violacea. 
Staminoidea quinque, petaloidea, membranacea, concavo- 
oblonga (non spathulata), apice rotundata, circiter 8 mm. 
longa, 1.5 mm. lata, rosea, nervo medio prominentiore. 
Stamina quinque, antheris linearibus, flavis, usque ad 1.8 
mm. longis, ad basim staminodei filamento brevissimo 
coalita. Ovarium subtriangulari-ovoideum, 0.8 mm. lon- 
gum, stylo filiformi 8 mm. longo, stigmate obtuso coro- 
natum. Fructus adhuc ignotus. 
Leitgebia, a genus hitherto unknown from Colombia, 
is characteristic of the isolated mountains of the Vene- 
zuelan-Guianan land-mass. 
The type and, until very recently, the only known 
species was Leitgebia guianensis Eichler, from Mount 
Roraima and from Mount Duida. Oliver described a 
concept from British Guiana as Leitgebia Imthurniana. 
Later, Gleason made this the type of anew genus: PRo- 
raimanthus. Recently it has been placed in the genus 
Sauvagesia by Dwyer. 
In 1945, Lasser (in Bol. Acad. Ciéne. Fis. Matem. 
Nat. Caracas (1945) 246, fig. p. 247), described Leitgebia 
Gleasoniana from Mount Duida and Mount Paraque in 
southern Venezuela; this species is at once distinguished 
from Leitgebia guianensis by its leaves which, measuring 
18-20 mm. by 2 mm., are twice as long as those of the 
earlier species. 
Leitgebia colombiana appears to approach most closely 
to L. guianensis, from which it can be distinguished at 
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