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<p>The systematics of the seven species of the <i>Leucandra</i> clade of <i>Miconia</i>, traditionally considered within <i>Clidemia</i>, is investigated, and taxonomically revised, with the inclusion of descriptions, nomenclatural information, specimen citations, and eco-geographical characterizations, along with an identification key. The clade represents a portion of the phylogenetic diversity of <i>Miconia</i> sect. <i>Sagraea</i>, a group characterized by axillary, 4-merous flowers with elongate calyx teeth and short-stalked, gland-headed hairs with furrows separating the cells of the glandular-head. The species of the <i>Leucandra</i> clade are additionally characterized by distinctly pedunculate, but rather reduced, usually few-flowered inflorescences, and small flowers with recurved, oblong petals. The <i>Leucandra</i> clade is restricted to Cuba, Hispaniola, and Puerto Rico, and it represents the smaller of two major radiations of sect. <i>Sagraea</i> within the Greater Antilles. Lectotypes are selected for the following names: <i>Clidemia capituliflora</i> Cogn., <i>C. cubensis</i> Cogn., <i>C. leucandra</i> C. Wright ex Griseb., <i>C. leucandra</i> var. <i>divaricata</i> C. Wright ex Griseb., <i>C. oligantha</i> Urb., <i>C</i>. <i>trichotoma</i> C. Wright ex Griseb., <i>Ossaea trichopetala</i> C. Wright, <i>Sagraea macrandra</i> C. Wright, <i>Sagraea domingensis</i> DC., and the second step lectotype is designated for <i>Staphidiastrum rubrinerve</i> Naudin.</p>

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Taxonomic studies in the Miconieae (Melastomataceae). XV. Revision of the species of the Leucandra clade (of Miconia sect. Sagraea)

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Walter S. Judd,
  • Eldis R. Bécquer,
  • Gretchen M. Ionta,
  • Lucas C. Majure

摘要

The systematics of the seven species of the Leucandra clade of Miconia, traditionally considered within Clidemia, is investigated, and taxonomically revised, with the inclusion of descriptions, nomenclatural information, specimen citations, and eco-geographical characterizations, along with an identification key. The clade represents a portion of the phylogenetic diversity of Miconia sect. Sagraea, a group characterized by axillary, 4-merous flowers with elongate calyx teeth and short-stalked, gland-headed hairs with furrows separating the cells of the glandular-head. The species of the Leucandra clade are additionally characterized by distinctly pedunculate, but rather reduced, usually few-flowered inflorescences, and small flowers with recurved, oblong petals. The Leucandra clade is restricted to Cuba, Hispaniola, and Puerto Rico, and it represents the smaller of two major radiations of sect. Sagraea within the Greater Antilles. Lectotypes are selected for the following names: Clidemia capituliflora Cogn., C. cubensis Cogn., C. leucandra C. Wright ex Griseb., C. leucandra var. divaricata C. Wright ex Griseb., C. oligantha Urb., C. trichotoma C. Wright ex Griseb., Ossaea trichopetala C. Wright, Sagraea macrandra C. Wright, Sagraea domingensis DC., and the second step lectotype is designated for Staphidiastrum rubrinerve Naudin.