Cassia swartzioides var. scarlatina

Title

Cassia swartzioides var. scarlatina

Authors

Howard S. Irwin, Rupert C. Barneby

Scientific Name

Cassia swartzioides var. scarlatina (Ducke) H.S.Irwin & Barneby

Description

4a. Cassia swartzioides Ducke var. scarlatina (Ducke) Irwin & Barneby, stat. nov.

C. scarlatina Ducke, Bull. Mus. Paris II, 4: 730. 1832 (oct) & Archiv. Jard. Bot. Rio de Jan. 6: 25, 1933 (jan).—"Habitat prope Sao Paulo de Olivenga (Rio Solimoes, civitate Amazonas) silva non inundabili, leg. A. Ducke 20-8-1929 (H[erb.] J[ard.] B[ot.] R[io de Janeiro] n. 23.307) . . ."—Holotypus, RB; isotypi, K = IPA Neg. 1173, MO, NY, P!

Cassia scarlatina sensu Ducke, 1939, p. 80; Macbride, 1943, p. 181, ex parte, exclus. Schunke 30.

Fls colored as given in key.—Collections: 9.—Fig. 3.

Forest margins and riverbanks above flood-line, 120-600 m, scattered along the upper Amazon and its right tributaries between 55-77°W and 3-11°S, from Loreto (Alto Amazonas), Peru and w. Amazonas, Brazil, s. to the Madeira-Mamore basin in Rondonia, Brazil and adjacent Pando, Bolivia.—Fl. VII-XI(-I).

Readily distinguished at anthesis from all Amazonian cassias except C. rubriflora by the vermilion flowers, and from the latter by the few large leaflets, agreeable perfume, and pandurate vexillum.