108c. Cassia ochnacea Vogel var. speluncae Irwin & Barneby, var. nov., foliolis rigide coriaceis nervo intramarginali crassa percursis var. ochnaceae et var. purpurascenti similis, illi foliolis dorso cum alabastris villosulis ac petalis luteis proprior, ab ambabus (procul allopatricis) foliolorum laminis late rhombico-obovatis habituque fruticoso erecto discrepans, a var. molli et var. latifolia, habitu necnon foliolorum ambitu comparandis praesertim nervo intramarginali (foliolis "craspedoneuris" dictis) patriaque remote aliena distincta. — BRAZIL. Minas Gerais: Morro da Furna, mun. de Sta. Rita de Cassia, 111.1945 (fl), J. Vidal I-547. — Holotypus, R; isotypus, NY.

Resembling the 2 preceding vars. in the strong intramarginal nerve of the lfts but these in outline broadly rhombic-obovate, 2-4.5 x 1.2-3.6 cm, thinly villosulous dorsally, the major secondary nerves ±7-9; branchlets, axes of inflorescence and sepals villosulous; petals yellow; ovary glabrous. — Collections: 2.

Habitat not recorded, but to be expected on outcrops in cerrado, probably on sandstone, known only from type-locality in the basin of Rio Grande, mun. Sta. Rita de Cassia, near 47°W, 21°S in extreme s.-w. Minas Gerais. — Fl. III-IV.