Nautilocalyx pallidus

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Nautilocalyx pallidus


Terrestrial herb, 10-30 cm tall. Stem sappy, erect, decumbent at base, with long scattered hairs. Leaves subequal in a pair; petiole 1-3 cm long, with scattered appressed hairs; blade membranous when dry, lanceolate to elliptic, 6-30 x 2-8 cm, margin slightly serrate, apex acuminate, base decurrent, above with scattered hairs, mostly on veins, below with long scattered hairs, shorter and denser on veins. Flowers 2-many, in epedunculate fascicles; pedicel 0.5-1 cm long, minutely pubescent. Calyx pale green, lobes connate at base, tube 0.2-0.3 cm, free portion of lobes oblique to erect, subequal, lanceolate bracteiform, 1-2 x 0.5-1 cm, margin repand-serrate, apex acute to slightly acuminate, outside and inside glabrescent; corolla erect in calyx, white, 3-5 cm long, tube cylindric, 2.5-4.5 cm long, base spurred, 0.3-0.4 cm wide, middle cylindric, throat round, 1 cm wide, outside densely hairy, inside glabrescent, limb 3 cm wide, lobes subequal, spreading, rounded, 0.7-1.1 x 1.2-1.3 cm, margin ciliate; stamens included, inserted 0.5 cm from base of corolla; ovary ovoid, 0.5 x 0.2-0.3 cm, pilose, style 3 cm long, hirsute, stigma 2-lobed. Mature fruit not seen.


Amazonia present, Guianas present, Southern America: Bolivia (Bolivia present); Colombia (Colombia present); Ecuador (Ecuador present); Peru (Peru present); Venezuela (Venezuela present)
Amazonia (Colombia, Ecuador, Peru, Bolivia, Brazil, Venezuela) and the Guianas; > 50 collections studied (FG: 4).


Collected in flower in .