Comments
(
anglais
)
fourni par eFloras
The range of Pityrogramma trifoliata is apparently actively expanding in Florida, perhaps in response to increasing disturbance of wetland habitats. A good case can be made for segregation of this species into the monotypic Trismeria Fée, based on differences in dissection of leaves and spore ornamentation noted in the descriptions of this and the previous species. Because naturally occurring hybrids with four other Pityrogramma taxa are known to exist in the tropics, P . trifoliata is retained in Pityrogramma for the present, following R. M. Tryon (1962), who viewed P . trifoliata as a specialized offshoot of the core group of species in the genus. Elsewhere, plants are known with yellow farina on the fertile leaves, but these are nowhere common.
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- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
anglais
)
fourni par eFloras
Leaves 50--150 cm, rarely longer. Petiole reddish brown, shiny, scaly. Blade linear-lanceolate, 1-pinnate apically to 2-pinnate proximally; fertile pinnae white-farinose abaxially. Pinnae palmate to pinnate, 2--3(--7)-foliolate proximally, with flat surfaces parallel to ground, undivided and linear apically. Pinnules short-stalked, linear, occasionally lobed proximally, margins serrulate. Spores with perispore sparsely granular, lacking equatorial flange. 2 n = 116.
- licence
- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
anglais
)
fourni par eFloras
Fla.; Mexico; West Indies in Greater Antilles; Central America; South America.
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
anglais
)
fourni par eFloras
Roadside ditches and canal banks; 0--20m.
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- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
anglais
)
fourni par eFloras
Acrostichum trifoliatum Linnaeus, Sp. Pl. 2: 1070. 1753; Trismeria trifoliata (Linnaeus) Diels
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Pityrogramma trifoliata: Brief Summary
(
vietnamien
)
fourni par wikipedia VI
Pityrogramma trifoliata là một loài thực vật có mạch trong họ Adiantaceae. Loài này được (L.) R.M. Tryon miêu tả khoa học đầu tiên năm 1962.
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- Wikipedia tác giả và biên tập viên