familyDryopteridaceae
genusTectaria
Show Lower Taxa
Difference between revisions of "Tectaria"
Anales Hist. Nat. 1(2): 115. 1799.
Common names: Halberd fern
Etymology: Latin tectum, roof, and aria, a substantive suffix, alluding to the rooflike indusium of some species
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>terrestrial or on rock. <b>Stems</b> short-creeping to erect, stolons absent. <b>Leaves</b> monomorphic, evergreen. <b>Petiole</b> 3/4–3 times length of blade, base not swollen; vascular bundles more than 3, arranged in an arc, ± round in cross section. <b>Blade</b> lanceolate to deltate or pentagonal, entire to 1-pinnate-pinnatifid [3-pinnate-pinnatifid], reduced distally to shallowly lobed or hastate apex, herbaceous to papery. <b>Pinnae</b> not articulate to rachis, segment margins entire to sinuate or shallowly lobed; proximal pinnae not or only slightly reduced, sessile to short-petiolulate, base equilateral or often inequilateral with prominent basiscopic lobe(s); costae adaxially rounded or shallowly grooved, grooves not continuous from rachis to costae; indument lacking or of multicellular hairs on costae abaxially, of multicellular hairs on costae adaxially. <b>Veins</b> reticulate, areoles with or without included veinlets. <b>Sori</b> in 1–several rows between midrib and margin, round; indusia peltate to round-reniform and with narrow sinus, persistent or caducous. <b>Spores</b> brownish, with inflated folds or wings. <b>x</b> = 40.</span><!-- |
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Revision as of 14:24, 27 July 2019
Plants terrestrial or on rock. Stems short-creeping to erect, stolons absent. Leaves monomorphic, evergreen. Petiole 3/4–3 times length of blade, base not swollen; vascular bundles more than 3, arranged in an arc, ± round in cross section. Blade lanceolate to deltate or pentagonal, entire to 1-pinnate-pinnatifid [3-pinnate-pinnatifid], reduced distally to shallowly lobed or hastate apex, herbaceous to papery. Pinnae not articulate to rachis, segment margins entire to sinuate or shallowly lobed; proximal pinnae not or only slightly reduced, sessile to short-petiolulate, base equilateral or often inequilateral with prominent basiscopic lobe(s); costae adaxially rounded or shallowly grooved, grooves not continuous from rachis to costae; indument lacking or of multicellular hairs on costae abaxially, of multicellular hairs on costae adaxially. Veins reticulate, areoles with or without included veinlets. Sori in 1–several rows between midrib and margin, round; indusia peltate to round-reniform and with narrow sinus, persistent or caducous. Spores brownish, with inflated folds or wings. x = 40.
Distribution
Mostly tropical.
Discussion
Species ca. 200 (4 in the flora).
Selected References
Key
| 1 | Blades 15-50 cm; areoles with included veinlets. | > 2 |
| 1 | Blades 5-15 cm; areoles rarely with included veinlets. | > 3 |
| 2 | Indusia peltate, attached centrally; pinnae cordate at base; rachises and costae glabrous abaxially. | Tectaria heracleifolia |
| 2 | Indusia round-reniform, attached at sinus; pinnae oblique at base; rachises and costae puberulent abaxially. | Tectaria incisa |
| 3 | Pinnae 1-8 pairs, often with proliferous buds in axils; petiole shorter than or rarely equaling blade, pubescent on both surfaces; indusia round-reniform, attached at sinus. | Tectaria coriandrifolia |
| 3 | Pinnae absent or 1(-2) pair, without proliferous buds in axils; petiole 1-3 times length of blade, pubescent adaxially, lacking hairs abaxially; indusia peltate, attached centrally. | Tectaria fimbriata |