Some Florida Ferns
نویسندگان
چکیده
منابع مشابه
Some Common Diseases of Papaya in Florida
Papaya ringspot, caused by papaya ringspot virus, is the most important disease of the crop in Florida, severely limiting the potential for commercial production. Sometimes this virus infects cucurbits. Earliest symptoms in papaya appear as yellowing and vein-clearing of younger leaves. A prominent yellow mottling of the leaves follows. One or more lobes of infected leaves may become severely d...
متن کاملSome Common Diseases of Mango in Florida
The number of diseases affecting mango in Florida is relatively small but can seriously limit production if not adequately controlled. This fact sheet concentrates on the symptoms of the important mango diseases, the weather conditions conducive to disease development, and methods for control. Due to frequent changes in the availability and use restrictions for agricultural chemicals, consult t...
متن کاملBiometry of stomata in Blechnum species (Blechnaceae) with some taxonomic and ecological implications for the ferns.
Morphological stomatal traits, such as size, form and frequency, have been subject of much literature, including their relationships with environmental factors. However, little effort have focused on ferns, and very few in the genus Blechnum. Stomatal length, width and frequency (as stomatal index) of a number of specimens of fourteen Neotropical species of Blechnum were measured in adult pinna...
متن کاملHow early ferns became trees.
A new anatomically preserved fern, discovered from the basalmost Carboniferous of Australia, shows a unique combination of very primitive anatomical characters (solid centrarch cauline protostele) with the elaboration of an original model of the arborescent habit. This plant possessed a false trunk composed of a repetitive branching system of very small stems, which established it as the oldest...
متن کاملMaidenhair Ferns, Adiantum, are Indeed Monophyletic and Sister to Shoestring Ferns, Vittarioids (Pteridaceae)
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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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1879
ISSN: 0006-8071
DOI: 10.1086/325215