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Auteur William Louis Stern |
Documents disponibles écrits par cet auteur (9)
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Article
William Louis Stern, Auteur ; Walter S. Judd, AuteurCatasetinae consist of five genera of pseudobulbous Orchidaceae of the Neotropics. Anatomy is characterized by sunken, three-celled foliar hairs, mostly tetracytic stomatal apparatuses, superficial stomata, homogeneous mesophyll, foliar fibre bu[...]![]()
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William Louis Stern, Auteur ; Walter S. Judd, AuteurVanilleae have been divided into three subtribes consisting of ten genera. We had material for study of all except Dictyophyllaria in subtribe Vanillinae. All genera except Vanilla have few species; Clematepistephium and Dictyophyllaria are mono[...]![]()
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Meri Ann Holtzmeier, Auteur ; William Louis Stern, Auteur ; Walter S. Judd, AuteurUsing data obtained through anatomy and morphology, we used cladistics to examine the monophyly of Senghas's proposed classification of Maxillaria cushion plants and his placement of Mormolyca ringens. Trignidium obtusum was chosen as the outgro[...]![]()
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William Louis Stern, Auteur ; W. Mark Whitten, AuteurStanhopeinae are a group of tropical American orchids characterized by euglossine bee pollination and lateral inflorescences stemming from the bases of pseudobulbs. Leaves are hypostomatal, and all stomatal configurations are tetracytic. Chloren[...]![]()
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Tomohisa Yukawa, Auteur ; William Louis Stern, AuteurThe genus Cymbidium (Orchidaceae) exhibits distinctive ecological diversification and occurs in terrestrial, epiphytic, and lithophytic life forms. One species, Cymbidium macrorhizon, lacks foliage leaves and has a strongly mycoparasitic existen[...]![]()
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William Louis Stern, Auteur ; Walter S. Judd, AuteurVanilla is a pantropical genus of green-stemmed vines bearing clasping (aerial) and absorbing (terrestrial) roots. Most vanillas bear normal, thick foliage leaves; others produce fugacious bracts. Seventeen species, including both types were stu[...]![]()
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William Louis Stern, Auteur ; Walter S. Judd, AuteurCymbideae comprise an assemblage of 28 genera nearly all of which are represented in this study. Their anatomy is relatively homogenous with the exception of Govenia, in which roots lack velamen and pseudobulb vascular bundles lack sclerenchyma,[...]![]()
Article
Leaves of Habenariinae are characterized by anomocytic stomatal apparatuses, homogeneous mesophyll, collateral vascular bundles in a single series, and thin-walled bundle sheath cells. There is no foliar sclerenchyma nor a hypodermis. Cauline co[...]![]()
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Leaves in Orchidinae are essentially glabrous; anticlinal walls of foliar epidermal cells are basically straight-sided to curvilinear, and cells are fundamentally polygonal on both surfaces; adaxial cells are larger than abaxial cells. Stomata a[...]



