Monographs Details: Sciadotenia sprucei Diels
Authority: Barneby, Rupert C. & Krukoff, Boris A. 1971. Supplementary notes on American Menispermaceae. VIII. A generic survey of the American Tricilisisae and Anomospermeae. Mem. New York Bot. Gard. 22: 1-89.
Description:Distribution and Ecology - BRAZIL. Para: basin of Rio Tapajos, Ducke s n (HAMP 16761) (RB); Amazonas: basin of Rio Negro, Spruce 2209 ([male] fl Mar) (K-isotype) Traill 14 ([male] fl Aug) (K), Ducke 854, Krukoff 8020 ([male] fl Aug) (NY-holotype of S. similis), Ducke s n (Jard. Bot. Rio 25650) (S fl); basin of Rio Iga, Froes 20857.
Sciadotenia similis Moldenke in Krukoff & Moldenke, Brittonia 3: 33. 1938.
We are citing here only the collections which we have examined in connection with preparation of this paper.
This species is well characterized by its glossy, glabrous, golden-green or goldenbrown
leaf-blades sharply but openly reticulate on both sides, a short staminate
inflorescence with subsessile flower-cymules arranged along a subfiliform primary
axis, and a staminate flower with few (12-15) sepals. Apart from the related S.
mathiasiana it is the only Amazonian Sciadotenia in which the fertile branchlets are
clad in a very fine scurfy indument (either pallid or golden) of the type well known
on the leaves of Chondrodendron. The androecium shows some variation from plant
to plant and also from early to late stages of its development. Before anthesis and
in early anthesis the filaments are relatively short and of nearly equal length, but later
elongate, often unequally, the inner ones finally becoming a trifle longer than the three
outer. The type of S. similis seems to represent no more than a young state of
S. sprucei in which the filaments had not yet assumed their final form. It should be
noted, however, that the fruiting element described in the protologue of S. similis
is actually S. brachypoda. Only immature fruits of genuine S. similis have been seen.
Distribution:Brazil South America