Physeterostemon (Melastomataceae) : a new genus and two new species from the Bahian Atlantic Forest, Brazil
Physeterostemon (Melastomataceae) : a new genus and two new species from the Bahian Atlantic Forest, Brazil
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Physeterostemon（野牡丹科）：来自巴西巴伊亚大西洋森林的一个新属和两个新种
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Amorim
中科院分区：
文献类型：
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作者：
R. Goldenberg;A. Amorim
报道了产于巴西巴伊亚南部大西洋森林的一新属-该属可以通过其6瓣和二倍雄蕊花，齿状和宿存花萼，下位子房和干燥的蒴果与所有其他Mexicataceae区分。雄蕊群由大小稍不等的雄蕊组成，药隔不具附属物或腹侧具小瘤，在囊下不延长，但背侧和顶部加厚;花药长圆形，腹侧观顶部圆形，侧面观略向后突出于药隔，但有一个单一的腹侧孔。
A new genus, Physeterostemon, with two new species, P. fiaschii and P. jardimii, is described from southern Bahian Atlantic forest of Brazil. The genus can be distinguished from all other Melastomataceae by its 6-merous and diplostemonous flowers, toothed and persistent calyx, inferior ovary and dry, capsular fruits. The androecium consists of stamens that are slightly unequal in size with connectives that are unappendaged or minutely ventrally bituberculate and not prolonged below the thecae but dorsally and apically thickened; the anthers are oblong and rounded apically in ventral view, slightly projecting backwards over the connective in lateral view, but with a single ventral pore.