Lygodium longifolium (Willd.) Sw.

Species

Pteridophytes > Schizaeales > Lygodiaceae > Lygodium

Characteristics

Rhizome shortly creeping, apex of rhizome and bases of stipes covered with shiny black hairs. Juvenile fronds once or twice dichotomous, pinnae palmately divided with 4-7 subequal lobes, base often ± cordate, lobes up to ca. 18 × 1.8 cm, acuminate, margins shallowly serrate, with a vein ending in each tooth. Scandent fronds up to ca. 4 m, rachis up to ca. 2 mm in diam.; primary rachis branches very short, with a dormant apex covered with brown hairs having small swollen multicellular bases; secondary rachis branches 1-3 times dichotomous or subpinnate (lowest ones sometimes simple and bearing large 6-lobed pinnae); sterile pinnae composed of 2-4 subequal lobes ca. 15 cm or longer and ca. 15 mm wide, sinuses between lobes reaching up to 15 mm from base of pinna, surfaces glabrous and usually not warty when dried, base cuneate to cordate, margins regularly serrate, not or slightly thickened; fertile secondary branches 1-3 times dichotomous or (if dichotomies unequal) ± distinctly pinnate with 2 dichotomous tertiary branches (tertiary branches rarely with 3 separate pinnae); fertile pinnae simple or more often usually consisting of 2 subequal lobes united at base, lamina 3-10 mm wide, sorophores commonly 2-3 mm, less often up to 6 mm; spores coarsely and irregularly verrucose with prominent laesura and equatorial ridge on proximal face.
More
Rhizome short-creeping, its apex and bases of stipes covered with shining black hairs. Juvenile fronds once or twice dichotomous, leaflets palmately divided with 4-7 subequal lobes, base often more or less cordate, lobes to about 18 cm long and 18 mm wide, acuminate, edges shallowly serrate, a vein ending in each tooth. Scandent frond to about 4 m long, rachis to 2 mm diameter; primary rachis-branches very short, with a dormant apex covered with brown hairs having small swollen bases; secondary rachis-branches 1-3 times dichotomous or sub-pinnate (lowest ones sometimes unbranched and bearing large 6-lobed leaflets); sterile leaflets composed of 2-4 subequal lobes 15 cm or more long and c. 15 mm wide, the sinuses between the lobes reaching to 15 mm from the base of the leaflet, edges regularly serrate, not or little thickened, base cuneate to cordate, surfaces glabrous and usually not warty when dried; fertile secondary branches 1-3 times dichotomous or (if the dichotomies are unequal) more or less distinctly pinnate with two dichotomous tertiary branches (tertiary branches may rarely have three separate leaflets); fertile leaflets simple or more usually consisting of two subequal lobes united at the base, lamina 3-10 mm wide, sorophores commonly 2-3 mm long, less often to 6 mm; spores coarsely and irregularly verrucose.
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Environment

Edges of forest, probably in more exposed places than L. circinnatum, and not attaining so large a size as that species.
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Hardiness (USDA) 8-12

Usage

Uses medicinal potherb
Edible stems
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Cultivation

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Distribution

Lygodium longifolium world distribution map, present in Bangladesh, China, Indonesia, India, Kiribati, Lao People's Democratic Republic, Myanmar, Malaysia, Philippines, Singapore, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:17143080-1
WFO ID wfo-0001252544
COL ID 3WQ7X
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Lygodium derivatum Lygodium teysmannii Lygodium digitatum Hydroglossum longifolium Lygodium longifolium