Adiantum melanoleucum

Willdenow

Sp. Pl. 5(1): 443. 1810.

Common names: Fragrant maidenhair
Treatment appears in FNA Volume 2.

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

V2 808-distribution-map.gif

Fla., West Indies in Greater Antilles, Bahamas

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Adiantum melanoleucum"
Lobed (?) +  and Obtuse (?) +
Cathy A. Paris +
Willdenow +
truncate +  and cuneate +
11 cm110 mm <br />0.11 m <br /> (15 cm150 mm <br />0.15 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (8 cm80 mm <br />0.08 m <br />) +
15 cm150 mm <br />0.15 m <br /> (35 cm350 mm <br />0.35 m <br />) +
8cm;15cm +
Fragrant maidenhair +
Fla. +, West Indies in Greater Antilles +  and Bahamas +
crescent--shaped +
0.1 cm1 mm <br />0.001 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
yellow +  and white +
obcordate;reniform +
Hammocks and limestone sinks in Everglades National Park +
monomorphic +
densely clustered;closely spaced +
15 cm150 mm <br />0.15 m <br /> (35 cm350 mm <br />0.35 m <br />) +
recurved +  and reflexed +
noncircinate +  and circinate +
35 cm350 mm <br />0.35 m <br /> (80 cm800 mm <br />0.8 m <br />) +
dentate +, erose-ciliate +  and entire +
acroscopic +  and basiscopic +
chestnut-brown;dark purple or blackish +
not glaucous +  and strigose +
Sporulating throughout the year. +
concolored;dark reddish-brown +
persistent +
linear-lanceolate +  and lanceolate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
yellowish-brown +  and yellow +
1 +, 32 +  and 64 +
tetrahedral-globose +
suberect +  and long-creeping +
shiny +  and dull +
Adiantum melanoleucum +
Adiantum +
species +
2 times as long as broad +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 2.9 cm29 mm <br />0.029 m <br /> (?) +
1 +  and several +
crescent--shaped +  and roundish +
anastomosing +  and simple +
conspicuous +
on rock +  and terrestrial +