Difference between revisions of "Adiantum melanoleucum"
Sp. Pl. 5(1): 443. 1810.
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|genus=Adiantum | |genus=Adiantum | ||
|species=Adiantum melanoleucum | |species=Adiantum melanoleucum | ||
Revision as of 22:15, 27 May 2020
Stems short-creeping; scales dark reddish brown, concolored, margins entire. Leaves arching to erect, clustered, (15–)35–80 cm. Petiole 1–2 mm diam., minutely rough, abaxially strigose, not glaucous. Blade ovate, pinnate, 1-pinnate distally (small leaves 1-pinnate throughout), (11–)15–35 × (3.5–)8–15 cm, glabrous; proximal pinnae (and sometimes also next 2–3 pairs) 1–2(–3)-pinnate; rachis straight, densely minutely rough. Segment stalks 0.1–0.8 mm, dark color entering into segment base. Ultimate segments oblong, about 2 times as long as broad; basiscopic margin straight or sometimes oblique; acroscopic margin shallowly lobed, lobes separated by narrow incisions; apex obtuse, shallowly lobed. False indusia crescent-shaped, 1–4.5 mm, glabrous. Spores mostly 40–50 µm diam. 2n = 60.
Phenology: Sporulating throughout the year.
Habitat: Hammocks and limestone sinks in Everglades National Park
Elevation: 0 m
Distribution
Fla., West Indies in Greater Antilles, Bahamas.
Discussion
Selected References
None.