کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10939280 1095144 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural analysis of the dissected ensiform leaves and shoot morphology of Marathrum foeniculaceum (Podostemaceae)
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Structural analysis of the dissected ensiform leaves and shoot morphology of Marathrum foeniculaceum (Podostemaceae)
چکیده انگلیسی
Foliage leaves of Marathrum foeniculaceum Humb. & Bonpl. (Podostemaceae-Podostemoideae) resemble pinnate compound leaves at first sight. But the similarity is deceptive, since studies of the leaf structure reveal the ensiform (sword-like) shape of the blade. The ribbon-shaped central rachis-like portion represents the parallel-veined ensiform blade that extends in the median plane direction. Pinnae, typically developing from the leaf margin of the blade in transverse position relative to the mother shoot axis, do not occur here, but instead, bi-pinnate-like appendages arise alternately at the adaxial and abaxial edge of the ensiform blade. The pinnate-like structures are accessory structures. These project only from one side (“front side”) of the ensiform blade. The appendages produce repeatedly forked threads that end in pubescent filaments. The trichomes are of the Zeylanidium olivaceum type. The occurrence of similar structures in species of Marathrum and the related genera Apinagia and Mourera are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flora - Morphology, Distribution, Functional Ecology of Plants - Volume 200, Issue 3, 1 July 2005, Pages 229-244
نویسندگان
,