{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T00:16:54Z","timestamp":1777335414755,"version":"3.51.4"},"reference-count":72,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2010,8,1]],"date-time":"2010-08-01T00:00:00Z","timestamp":1280620800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100010426","name":"Botanical Society of America","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100010426","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American J of Botany"],"published-print":{"date-parts":[[2010,8]]},"abstract":"<jats:p>\u2022 <jats:italic>Premise of the study<\/jats:italic>: Taxonomic groups have often been recognized on the basis of geographic distinctions rather than accurately representing evolutionary relationships. This has been particularly true for temperate and tropical members from the same family. Polygonaceae exemplifies this problem, wherein the woody tropical genera were segregated from temperate members of the family and placed in the subfamily Polygonoideae as two tribes: Triplarideae and Coccolobeae. Modern phylogenetic studies, especially when inferred from many lines of evidence, can elucidate more probable hypotheses of relationships. This study builds on previous work in the family and aims to test the traditional classification of the tropical woody taxa, which have been understudied and undersampled compared to their temperate relatives.<\/jats:p><jats:p>\u2022 <jats:italic>Methods<\/jats:italic>: A phylogenetic study was undertaken with expanded sampling of the tropical genera with data from five plastid markers (<jats:italic>psbA\u2010trnH<\/jats:italic>,<jats:italic> psaI\u2010accD<\/jats:italic>,<jats:italic> matK<\/jats:italic>,<jats:italic> ndhF<\/jats:italic>, and <jats:italic>rbcL)<\/jats:italic>, nuclear ribosomal DNA (ITS) and morphology.<\/jats:p><jats:p>\u2022 <jats:italic>Key results<\/jats:italic>: Results support the placement of nine of 12 genera of the Triplarideae and Coccolobeae within Eriogonoideae, in which these genera form a paraphyletic assemblage giving rise to Eriogoneae. The remaining woody tropical genera excluded from Eriogonoideae occur in the paleotropics.<\/jats:p><jats:p>\u2022 <jats:italic>Conclusions<\/jats:italic>: Traditional characters used to delimit Coccolobeae and Triplarideae are not useful for defining monophyletic groups. The six\u2010tepal condition is derived from the five\u2010tepal condition, and unisexual flowers have arisen multiple times in different sexual systems. Ruminate endosperm has arisen multiple times in the family, suggesting this character is highly plastic.<\/jats:p>","DOI":"10.3732\/ajb.1000022","type":"journal-article","created":{"date-parts":[[2010,7,26]],"date-time":"2010-07-26T23:06:11Z","timestamp":1280185571000},"page":"1377-1390","source":"Crossref","is-referenced-by-count":48,"title":["Placing the woody tropical genera of Polygonaceae: A hypothesis of character evolution and phylogeny"],"prefix":"10.1002","volume":"97","author":[{"given":"Janelle M.","family":"Burke","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adriana","family":"Sanchez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kathleen","family":"Kron","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Melissa","family":"Luckow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2010,8]]},"reference":[{"key":"e_1_2_5_2_1","first-page":"347","volume-title":"Polygonaceae","author":"Aymard C. 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