Monographs Details: Cassia ramiflora var. amazonica H.S.Irwin
Authors:Howard S. Irwin, David J. Rogers
Authority: Irwin, Howard S. & Rogers, David J. 1967. Monographic studies in Cassia (Leguminosae -- Caesalpinoideae) II. A taximetric study of section Apoucouita. Mem. New York Bot. Gard. 6: 71--120.
Description:Latin Diagnosis - Differt a varietate typica glandulis petiolorum saepe scutellatis, semper sessilibus; glandulis pedunculorum plerumque latioribus quam 0.75 mm et altioribus quam 0.5 mm; bracteolis plerumque oppositis, infra calycem 2 mm nascentibus; calycibus (cum hypanthio) 5-8 mm in diametro, velutinis; petalis plerumque 8-13 mm longis.

Species Description - Differs from the typical variety in the following respects; petiolar gland often scutellate, consistently sessile; peduncular glands mostly broader than 0.75 mm and higher than 0.5 mm; bracteoles mostly opposite and mostly less than 2 mm below calyx; calyx (including hypanthium) 5-8 mm in diameter, velutinous; petals mostly 8-13 mm long.

Distribution and Ecology - Distribution (Fig. 46) : Brazil, from the Para-Amazonas boundary eastward to the lower Rio Tocantins and the vicinity of Belem, southeastward to Bahia. BRAZIL, BAHIA: w/o locality, w/o date, Blanchet 340 (G) ; Igreja Velha, 1841, Blanchet 3256 (BM, F, G, GH, NY); Jacobina, 1843, Blanchet 3710 (BR, G, K, MICH) ; w/o locality, w/o date, Blanchet s.n. (K) ; Rio Grungogy, 29 March 1921, H. M. Curran s.n. (Yale School of Forestry 4675) (NY ) ; Estrada Bom Gosta a Olivença, zona costeira, 26 January 1956, R. L. Fróes 34005 (IAN) ; w/o locality, w/o date, Glocker 340 (BM) . CEARA: Municipio de Fortaleza, Mucuripe, 1 October 1935, F. Drouet 2541 (F, GH, MICH, NY, R, S, UC, US). PARA: Salinopolis, January 1961, P. B. Cavalcante 944 (MG) ; Aramanahy, February 1932, R. C. M. da Costa 306 (RB, S, US) ; Rio Arrayolos, 24 April 1903, A. Ducke 3522 (MG); Faro, 1 February 1910, A. Ducke s.n. (MG 10621) (BM, MG) ; Montealegre, Erere, 3 May 1916, A. Ducke s.n. (MG 16133) (MG. RB) ; Rio Tocantins, praia do Bren Branca, 6 July 1916, A. Ducke s.n. (MG 16210) (MG. RB) ; Rio Tocantins, Igarape Sao Miguel, 11 September 1948, R. L. Fróes 23424 (IAN, RB) ; Rio Vermelho, regiao do Tocantins, 23 April 1951, R. L. Fróes 27003 (IAN, UB) ; Rio Vermelho, regiao do Tocantins, 1 May 1951, R. L. Fróes 27032 (IAN, US) ; Rio Tocantins, Jacunda, 14 May 1951, R. L. Fróes 27076 (IAN, NY, UC) ; Taperinha, regiao do Planalto do Santarem, 3 December 1954, R. L. Fróes 31208 (IAN); regiao do Planalto do Santarem, Rio Curua Una, 18 July 1955, R. L. Frós 31965 (IAN, RB); Rio Peri, 29 November 1955, R. L. Fróes 32429 (N\, RB, US); Municipio de Alenquer, Rio Curua, estrada Irapuru Agua Branca, 4 March 1953, R. L. Fróes & J. P. Filho 29469 (IAN, NY, US); Rio Capim, 26 March 1949, R. L. Fróes & J. M. Pires 24158 (IAN); Km 117 da Rodovia Belém-Brasília, 25 January 1960, E. Oliveira 416 (UB) ; Rio Araguaia, regiao de Xambioa, 11 March 1961, E. Oliveira 13S7 (IAN); Rio Araguaia, regiao de Xambioa, 12 March 1961, E. Oliveira 1390 (IAN) ; Icoaracy, 5 October 1957, E. Pereira 3213 (N\ , RB); "In collib. siccis pr. Obidis," October-November 1828, L. Riedel 1509 (US) ; Estrada de Maracana, km. 22, Belém, 8 February 1962, A. T. Silva 641 (UB); Rio Tocantins, Arumateua, April 1907, E. Snethlage 8192 (G); Between Vals de Cans field and Belem, near "Bosque", 25 August 1946, J. J. Wurdack B-116 (NY) . PERNAMBUCO: Island of Itamaraca, December 1837, Gardner 991 (K) ; Taboleiro de Tambe, 29 December 1950, D. deA. Lima 50-758 (IAN); Ilha Itamaraca, 1887, Ramage s.n. (BM). PIAUI: "der catinga der Serra Branca," January 1907, E. Ule 7189 (G, K); RIO GRANDE DO NORTE: Natal, 1—3 mi. S. of Ponta Negra, 2 September 1946, J. J. Wurdack B-149 (NY) ; Natal, 1—3 mi. S. of Ponta Negra, 2 September 1946, J. J. Wurdack B-150 (NY).


Graph development in this variety (Fig. 40) indicates a much higher degree of homogeneity. This is not entirely unexpected, for the habitats concerned, especially in Amazonia proper, are less varied than those occupied by the typical variety farther south. The only persistent variants are the 115-192-193 cluster of coastal northeastern Brazil, distinguished by short blunt-tipped and -based leaflets, and puberulent pedicels. These variants are absorbed into the main mass of collections representing the variety as criteria relax but before the northern and southern elements merge.


Distribution:Brazil South America| Pará Brazil South America| Amazonas Brazil South America| Bahia Brazil South America| Piauí Brazil South America| Rio Grande do Norte Brazil South America| Pernambuco Brazil South America| Ceará Brazil South America|