Tectaria fimbriata |
Tectaria incisa |
|
---|---|---|
least halberd fern |
incised halberd fern |
|
Stems | horizontal, short-creeping. |
erect, compact. |
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. |
straw-colored to tan or chestnut brown, equaling or slightly longer than blade, pubescent on both surfaces, base scaly; scales narrowly lanceolate, 3–8 × 0.2–0.7 mm. |
Blade | deltate to pentagonal, 1-pinnate or ternately lobed, 5–10 × 3–7 cm. |
oblong or ovate-oblong, 1-pinnate, 0.15–1.2 × 0.2–0.5 m. Rachis and costae puberulent abaxially. |
Pinnae | absent or 1(–2) pair, or blade shallowly pinnatifid, 4–7 cm, base rounded, without proliferous buds in axils. |
(2–)3–6 pairs, 12–25 cm, base oblique, with 1–2 proximal basiscopic lobes, margins crenate without proliferous buds in axils. |
Indusia | peltate. |
attached laterally. |
Rachis | and costae pubescent abaxially. |
|
Areoles | rarely with included veinlets. |
with included veinlets. |
2n | = 80. |
= 160. |
Tectaria fimbriata |
Tectaria incisa |
|
Habitat | Sinkholes, on shaded ledges or occasionally in sun | Hammocks |
Elevation | 0 m (0 ft) | 0 m (0 ft) |
Distribution |
FL; Mexico in Yucatán; West Indies in Bahamas; Greater Antilles |
FL; Mexico; Central America; West Indies in Antilles; South America to n Argentina |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 2. | FNA vol. 2. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Aspidium fimbriatum, Aspidium minimum, Aspidium trifoliatum var. minimum, Sagenia lobata, T. lobata, T. minima | |
Name authority | (Willdenow) Proctor & Lourteig: Bradea 5: 386. (1990) | Cavanilles: Descr. Pl. 249. (1802) |
Web links |