Senna ruiziana var. ruiziana

Title

Senna ruiziana var. ruiziana

Authors

Howard S. Irwin, Rupert C. Barneby

Scientific Name

Senna ruiziana (G.Don) H.S.Irwin & Barneby var. ruiziana

Description

25a. Senna ruiziana (G. Don) Irwin & Barneby var. ruiziana. Chamaefistula ruiziana G. Don, 1832, l.c., sens, str.—"Native of Guiaquil [but doubtless really from Peru, very probably from Huanuco], Cassia macrophylla, Ruiz et Pav. in herb. Lamb[ert.]."—Holotypus, BM! isotypi, FI (hb. Webb.), G, MA (hb. Pavon. 14/30) = F Neg. 294101—Cassia ruiziana (G. Don) Vogel, Syn. Gen. Cass. 40. 1837.

Cassia pallidifolia Macbride, Field Mus. Bot. 13 (Fl. Peru), part 3 (1): 176. 1943—"Junin: Chan- chamayo Valley, Carlos Schunke 62, type."—Holotypus, collected X.1929 (fl), F!

Cassia ruiziana sensu Bentham, 1871, p. 520; Macbride, 1943, p. 180.Characters as given in key.—Collections: 75.

Wet tropical forest, monte and secondary woodland, in high forest mostly along streams, sometimes on cliffs, apparently not uncommon at ±450-1600 m on the upper tributaries of the Amazon, from Rio Putumayo in Colombia s. through the valleys of Rios Huallaga and Ucayali to Rios Perene, Ene and Mantaro in Junin and n. Huancavelica, extending more rarely e. into the Hylaean lowlands, down to ±300 m, on the Amazon as far as Leticia, Colombia (near 70°W), to be sought in adjoining Amazonas, Brazil.—Collected in fl almost throughout the year, most often X-III.—Matarro.