Typification and Identity of Adiantum tetragonum (Pteridaceae)
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چکیده
منابع مشابه
Phylogeny and relationships of the neotropical Adiantum raddianum group (Pteridaceae)
With more than 200 species, the maidenhair fern genus Adiantum is among the top ten most diverse fern genera. Adiantum is pantropical in distribution and, due to the presence of a unique synapomorphy (sporangia borne on indusia rather than laminae), perhaps the most easily recognized fern genus. Many of its members, including numerous cultivars derived from A. raddianum, are grown as ornamental...
متن کاملThe Hybrid Origin of Adiantum meishanianum (Pteridaceae): A Rare and Endemic Species in Taiwan
Adiantum meishanianum is an endemic species distributed only in Meishan village, Kaohsiung, Taiwan. Because its sporangia contain only abortive spores, A. meishanianum has been regarded as having a hybrid origin, presumably with A. caudatum, A. malesianum, and A. philippense as the putative parents. The aim of this study is to confirm the hybrid origin and determine the parental lineages of A. ...
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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 ...
متن کاملSporangium Exposure and Spore Release in the Peruvian Maidenhair Fern (Adiantum peruvianum, Pteridaceae)
We investigated the different processes involved in spore liberation in the polypod fern Adiantum peruvianum (Pteridaceae). Sporangia are being produced on the undersides of so-called false indusia, which are situated at the abaxial surface of the pinnule margins, and become exposed by a desiccation-induced movement of these pinnule flaps. The complex folding kinematics and functional morpholog...
متن کاملOn the identity and typification of Solanum brasilianum Dunal (Solanaceae)
Solanum brasilianum Dunal was described by Dunal in 1813 with reference only to an illustration in an 18th century work by Leonard Plukenet. Th e plate is diffi cult to interpret and no explicitly related specimens were available so the name S. brasilianum has long been regarded as “unresolved” and has never been used. Material matching the Plukenet plate was discovered in the herbarium of the ...
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ژورنال
عنوان ژورنال: American Fern Journal
سال: 2005
ISSN: 0002-8444,1938-422X
DOI: 10.1640/0002-8444(2005)095[0089:taioat]2.0.co;2