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.
Family:Menispermaceae
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.

Discussion:

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|