William Jackson Hooker,
Curtis's Botanical Magazine, Volume LV.…
“ Perianth or Calyx glabrous, greenish yellow, with the tube slender, filiform, the upper half separating into four segments, spathulate and concave at the extremity, and, in the hollow, bearing, each, a solitary anther. Style scarcely longer than the perianth, filiform, yellow. Stigma simple. ”
