Clarification of Two Poorly Known Vittarioid Ferns (Pteridaceae): Haplopteris angustissima and H. capillaris
نویسندگان
چکیده
منابع مشابه
A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data
In ferns, as in most branches of the tree of life, phylogenetic analyses of molecular data have greatly improved our ability to identify natural groupings that are subsequently reflected in classifications grounded in the principle of monophyly (Smith & al., 2006; Rothfels & al., 2012; Christenhusz & Chase, 2014). In some cases, the results of such analyses are consistent with earlier notions o...
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Across the tree of life, molecular phylogenetic studies often reveal surprising relationships between taxa with radically different morphologies that have long obscured their close affiliations. A spectacular botanical example is Rafflesia, a holoparasite that produces the largest flowers in the world, but that evolved from tiny-flowered ancestors within the Euphorbiaceae. Outside of parasitic ...
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Five species of Puccinia and two of Uromyces making 7 rust-host combinations are reported from Iran. Puccinia leveillei on Geranium sylvaticum, P. libanotidis on Libanotis transcaucasica, P. podospermi on Scorzonera laciniata and Uromyces scrophulariae on Scrophularia umbrosa are reported as new to the flora of Iran. For other three species viz. P. campanulae and P. gaubae on Campanula spp. and...
متن کاملAccelerated rate of molecular evolution for vittarioid ferns is strong and not driven by selection.
Molecular evolutionary rate heterogeneity-the violation of a molecular clock-is a prominent feature of many phylogenetic data sets. It has particular importance to systematists not only because of its biological implications, but also for its practical effects on our ability to infer and date evolutionary events. Here we show, using both maximum likelihood and Bayesian approaches, that a remark...
متن کاملUnique expression of a sporophytic character on the gametophytes of notholaenid ferns (Pteridaceae).
PREMISE OF THE STUDY Not all ferns grow in moist, shaded habitats; some lineages thrive in exposed, seasonally dry environments. Notholaenids are a clade of xeric-adapted ferns commonly characterized by the presence of a waxy exudate, called farina, on the undersides of their leaves. Although some other lineages of cheilanthoid ferns also have farinose sporophytes, previous studies suggested th...
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ژورنال
عنوان ژورنال: Systematic Botany
سال: 2019
ISSN: 0363-6445
DOI: 10.1600/036364419x15620113920545