Department of Biology, Coker Hall, University of North Carolina-Chapel Hill, North Carolina 27599 USA;
Am J Bot. 2005 Aug;92(8):1397-420. doi: 10.3732/ajb.92.8.1397.
Parsimony and Bayesian analyses of plastid rbcL and trnL-F DNA sequence data of the pantropical family Euphorbiaceae sensu stricto (s.s.) are presented. Sampling includes representatives of all three subfamilies (Acalyphoideae, Crotonoideae, and Euphorbioideae), 35 of 37 tribes and 179 of the 247 genera of uniovulate Euphorbiaceae sensu lato (s.l.). Euphorbiaceae s.s. were recovered as a monophyletic group with no new adjustments in circumscription. Two clades containing taxa previously placed in Acalyphoideae are found to be successive sisters to all other Euphorbiaceae s.s. and are proposed here at subfamilial rank as Peroideae and Cheilosoideae. The remainder of the family fall into seven major lineages including Erismantheae and Acalyphoideae s.s. (parts of Acalyphoideae), Adenoclineae s.l., Gelonieae, articulated crotonoids and inaperturate crotonoids (parts of Crotonoideae), and Euphorbioideae. Potential synapomorphies and biogeographical trends are suggested for these clades. Acalyphoideae s.s., inaperturate crotonoids, and Euphorbioideae tribe Hippomaneae each have two major subclades that represent novel groupings without apparent morphological synapomorphies. Two subfamilies, 14 tribes, and 10 genera were found to be para- or polyphyletic. Noteworthy among these, Omphaleae are embedded in Adenoclineae, Hureae + Pachystromateae in Hippomaneae, Ditta in Tetrorchidium, and Sapium s.s. in Stillingia.
本文呈现了对泛热带大戟科（Euphorbiaceae）广义概念下的单室大戟族（uniovulate Euphorbiaceae）所有 247 属中的 179 属以及狭义概念下的 37 族中的 35 族和三个亚科（Acalyphoideae、Crotonoideae 和 Euphorbioideae）代表种的质体 rbcL 和 trnL-F DNA 序列的简约和贝叶斯分析。研究结果表明，狭义大戟科是一个单系群，其范围没有新的调整。两个包含先前置于 Acalyphoideae 中的分类群的分支被发现是所有其他狭义大戟科的姊妹群，在这里被提议作为亚科Peroideae 和 Cheilosoideae。该科的其余部分分为七个主要谱系，包括 Erismantheae 和狭义 Acalyphoideae（Acalyphoideae 的一部分）、Adenoclineae s.l.、Gelonieae、关节状巴豆和无孔巴豆（Crotonoideae 的一部分）以及 Euphorbioideae。这些分支被建议具有潜在的同形特征和生物地理趋势。狭义 Acalyphoideae、无孔巴豆和 Euphorbioideae 族 Hippomaneae 每个都有两个主要的亚分支，代表没有明显形态同形特征的新分组。有两个亚科、14 个族和 10 个属被发现是并系或多系的。其中值得注意的是，Omphaleae 嵌入在 Adenoclineae 中，Hureae + Pachystromateae 嵌入在 Hippomaneae 中，Ditta 嵌入在 Tetrorchidium 中，而 Sapium s.s. 嵌入在 Stillingia 中。
