Mimosa pilulifera var. pseudincana (Burkart) Barneby

  • Authors

    Rupert C. Barneby

  • Authority

    Barneby, Rupert C. 1991. Sensitivae Censitae. A description of the genus Mimosa Linnaeus (Mimosaceae) in the New World. Mem. New York Bot. Gard. 65: 1-835.

  • Family

    Mimosaceae

  • Scientific Name

    Mimosa pilulifera var. pseudincana (Burkart) Barneby

  • Type

    213a. Mimosa pilulifera Bentham var. pseudincana (Burkart) Barneby, comb. nov., based on autonym generated by M. pseudincana var. discolor Burkart, l.c. infra. M. pseudincana Burkart, Darwiniana 13(2-4): 397, fig. 8(a-l). 1964.—"Rio Grande do Sul: Municip

  • Synonyms

    Mimosa pseudincana var. discolor Burkart, Mimosa pseudincana Burkart, Mimosa pilulifera var. discolor, Mimosa aparadensis Burkart, Mimosa pilulifera Benth., Mimosa simulans Burkart

  • Description

    Variety Description - Characters as given in key to varieties.

    Distribution and Ecology - On stream- and river-banks, in moist thickets, at margin of gallery woodland, sometimes forming dominant populations, discontinuously widespread along the coast ranges of s.-e. Brazil, from the headwaters of rio Grande in Minas Gerais s.-w. to n.-e. (perhaps centr.) Rio Grande do Sul, according to Burkart (l.c.) to Uruguay, in S. Paulo ascending to 1770 m on Sa. da Bocaina, n.-ward from Paraná not or seldom below 700 m but perhaps lower s.-ward.—Fl. in tropical latitudes mostly III-V, s.-ward IV-VIII, but intermittently at other seasons.

  • Discussion

    Among the synonyms listed under var. pseudincana, the var. discolor is the least substantial variant, a form with leaflets glabrous and lustrous (not thinly stellate) on the upper face; it is the predominant form in eastern Paraná and extends thence both north and southward, but nowhere displaces completely the typical form. Mimosa aparadensis has the small capitula of var. pseudincana, but leaflets glabrous dorsally on the posterior side of midrib, where covered in sleep by the leaflet next below it on the rachis, and is in this respect intermediate to var. pilulifera. The concentration of leaves toward the end of the branches, said by Burkart to be distinctive, is matched in specimens with the indumentum of var. pseudincana. Mimosa simulans, known to me only from the protologue, was distinguished from M. pseudincana by a narrower fruit reminiscent of M. daleoides, but width of pod is plausibly interpreted by Lins (1984: 43) as a function of maturity, perhaps influenced by ecology.

  • Distribution

    Brazil South America| Minas Gerais Brazil South America| Rio Grande do Sul Brazil South America| São Paulo Brazil South America| Paraná Brazil South America|