Development of ensiform leaves in Senecio crassissimus Humber and Curio ficoides (L.) P.V. Heath (Asteraceae: Senecioneae)статья
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Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Аннотация:Senecio crassissimus and Curio ficoides are unique among Asteraceae in their ensiform leaves. However, their leaves differ in both the outline of the leaf blade as well as its faciality and the mode of vertical plane flattening. The leaf blade of C. ficoides is unifacial and becomes flattened by adaxial
growing. The leaf blade of S. crassissimus is subunifacial and becomes flattened by abaxial growing. Therefore, these leaves must have evolved convergently. The ensiform leaves of C. ficoides are similar to classic ensiform leaves inherent in Iridaceae. The ensiform leaves of S. crassissimus differ from the
latter in subunifaciality and flattening mode of their leaf blade. Accordingly, the leaves of S. crassissimus should better be categorized as subensiform