Monographs Details: Rudgea tanaosepala Sandwith
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Description:Distribution and Ecology - Known only from the type collection.
Simuni Creek, Rupununi River, British Guiana, alt ca 105 m, 25 Aug 1931; low and bushy undergrowth shrub about 3-8' high, growing in Mora forest; flowers white; Davis in Forest Dept. No. 2149.
Two sheets of this collection have been examined, one showing short styles, the other long styles. The species is remarkable in having the peculiar, elongate, filiform calyx-lobes.