Tectaria fimbriata

(Willdenow) Proctor & Lourteig

Bradea 5: 386. 1990.

Common names: Least halberd fern
Basionym: Aspidium fimbriatum Willdenow Sp. Pl. 5(1): 213. 1810
Synonyms: Aspidium minimum (L. Underwood) Clute Aspidium trifoliatum var. minimum Clute Sagenia lobata C. Presl Tectaria lobata (C. Presl) C. V. Morton Tectaria minima L. Underwood
Treatment appears in FNA Volume 2.

Stems horizontal, short-creeping. Petiole straw-colored, 1–3 times length of blade, hairs absent abaxially, pubescent adaxially, base scaly; scales lanceolate to linear, 1–3 × 0.3–0.5 mm. Blade deltate to pentagonal, 1-pinnate or ternately lobed, 5–10 × 3–7 cm. Rachis and costae pubescent abaxially. Pinnae absent or 1 (–2) pair, or blade shallowly pinnatifid, 4–7 cm, base rounded, without proliferous buds in axils. Areoles rarely with included veinlets. Indusia peltate. 2n = 80.


Habitat: Sinkholes, on shaded ledges or occasionally in sun
Elevation: 0 m

Distribution

V2 489-distribution-map.gif

Fla., Mexico in Yucatán, West Indies in Bahamas, Greater Antilles

Discussion

The hybrid between Tectaria fimbriata and T. coriandrifolia is T. × amesiana A. A. Eaton. Although intermediate between the two parents, the hybrid will lead to T. fimbriata in the key. The hybrid may be distinguished from T. fimbriata by scattered hairs on abaxial surface of petioles and misshapen spores.

Selected References

None.

Lower Taxa

None.

"-3timeslengthofblade" is not declared as a valid unit of measurement for this property.

... more about "Tectaria fimbriata"
Robbin C. Moran +
(Willdenow) Proctor & Lourteig +
rounded +
Aspidium fimbriatum +
simple to commonly +
5 cm50 mm <br />0.05 m <br /> (?) +  and 10 cm100 mm <br />0.1 m <br /> (?) +
pinnatifid;deltate;pentagonal 1-pinnate or ternately lobed +
reduced +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
herbaceous;papery +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
proliferous +
roundish +
Least halberd fern +
rounded +
Fla. +, Mexico in Yucatán +, West Indies in Bahamas +  and Greater Antilles +
inflated +
often +  and glabrous +
not continuous +
Sinkholes, on shaded ledges or occasionally in sun +
multicellular +
of multicellular hairs +  and lacking +
caducous +  and persistent +
round-reniform +
monomorphic +
evergreen +
straw-colored +
not articulate +
sessile +  and short-petiolulate +
round +, cuplike +, hoodlike +, reniform +, falcate +  and linear +
2 +  and 3 +
persistent +
lanceolate;linear +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +
entire +  and sinuate or shallowly lobed +
discrete +
reniform +  and oblong +
dictyostelic +, unbranched +  and branched +
Aspidium minimum +, Aspidium trifoliatum var. minimum +, Sagenia lobata +, Tectaria lobata +  and Tectaria minima +
Tectaria fimbriata +
Tectaria +
species +
anastomosing +  and simple +
on rock +  and terrestrial +
epiphytic +  and hemiepiphytic +