Artabotrys comprises a species‐poor early divergent grade (EDG) and a main species‐rich clade (“main Artabotrys clade,” MAC). All members of the MAC exhibit a remarkably well‐conserved floral Bauplan characterized by a tightly enclosed floral chamber with an elaborate rim between the inner petal blade and claw. Conversely, EDG resembles the sister genus Xylopia in lacking the inner petal rim, with one species (Artabotrys brachypetalus) bearing petals that lack the distinction between blade and claw altogether. The floral phenology and pollination ecology of two exemplar species—Artabotrys brachypetalus from the EDG and Artabotrys blumei from the MAC—are compared, including assessment of effective pollinators and their activity patterns, scent chemistry and thermogenesis. Our study revealed that Artabotrys blumei exhibits abbreviated anthesis (c. 27 hr), with a floral phenology and morphology that are clearly consistent with pollinator trapping, and may be pollinated by small beetles. Artabotrys brachypetalus has a typical anthetic duration (c. 45 hr), lacks a pollinator trapping mechanism, and is pollinated by honey bees and curculionid beetles. The “xylopioid” traits of the EDG are likely to be plesiomorphic, whereas the tightly enclosed floral chamber is likely to be apomorphic for the MAC and functionally significant in trapping pollinators.

中文翻译：

---

不同的Artabotrys物种（Annonaceae）的花卉生物学：对传粉媒介诱捕进化的启示

Artabotrys包括一个物种贫乏的早期发散等级（EDG）和一个主要的物种丰富的进化枝（“主要Artabotrys进化枝”，MAC）。MAC的所有成员均表现出保存完好的花卉花兰，其特征是紧密封闭的花室，内花瓣叶片和爪之间有精致的边缘。相反，EDG类似于姊妹属Xylopia，但没有内花瓣边缘，其中一种（Artabotrys brachypetalus）的花瓣没有叶片和爪的区别。2典范物种的花卉物候与传粉生态学毛叶鹰爪brachypetalus从EDG和毛叶鹰爪彩叶草比较了来自MAC的结果，包括评估有效的传粉媒介及其活动方式，气味化学和生热作用。我们的研究表明，毛叶鹰爪彩叶草展品缩写为开花期（Ç 27小时），花香物候和形态能与传粉俘获清楚一致的，并且可以通过小甲虫授粉。毛叶鹰爪brachypetalus具有典型的持续时间anthetic（角45小时），缺乏授粉诱捕机构，并且由蜜蜂和curculionid甲虫授粉。EDG的“ xylopioid”性状可能是多形的，而紧密封闭的花室对于MAC而言可能是无定形的，并且在捕获授粉媒介方面具有重要的功能。