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Specimen count
Pteridophyte taxa known or reported from Sulawesi
Cyclosorus interruptus
EOL Text
Rhizome widely creeping, up to 6 mm in diameter; rhizome scales sparse, black, narrowly ovate, entire, up to 1.5 mm long. Fronds spaced up to 12 cm apart, erect, not proliferous, herbaceous, in full sun texture stiff, leathery. Stipe up to 93 cm long, pale brown, glabrous to minutely hairy, with a few black scales at the base. Lamina up to 0.8 m long, ovate-lanceolate in outline, 2-pinnatifid, lower pinnae largest or of equal size as those above, only rarely very slightly reduced in size. Pinnae very narrowly oblong, shortly petiolate to sessile, base truncate, incised a third of the way to halfway to the costa; veins 7-15 pairs per lobe, basal pair of veins anastomosing well below the sinus, next pair meeting at the sinus; under surface hairless or set with white hairs, particularly along the costae, costules and veins, with or without pale brown scales on the costae, also sometimes distinct red glands below, upper surface hairless. Rhachis pale brown, hairless to thinly covered with short hairs. Sori round, up to 18 per lobe, typically forming a zigzag pattern along each side of the costa; indusiate small, hairy, often shed early.
interruptus: interrupted, broken-up; unclear, referring to the spaced-out fronds on the rhizome or to describe the regularly incised pattern created by the pinnae lobes.
Southern Africa, temperate and tropical Africa, Madagascar, Mauritius, south and central America as far north as Florida.
The Swamp shield-fern (Cyclosorus interruptus) is a fern in the Marsh Fern family, that is native to the tropics and subtropics of all the continents.[1] In the New World it is found from Mexico to Argentina, and besides in the Antilles.[2] In the Old World it is found in India, China, Malaysia, Sri Lanka[3] and South Africa. It is also found in Australia, New Zealand, Hawaii and other islands in the Pacific Ocean. The various populations differ with respect to genetic cytotypes, glands, pubescence, and frond size.[2]
Its habitat is the vicinity of freshwater swamps and it may reach one metre in height. In the year 1770, it was collected by Joseph Banks and Daniel Solander not far from Botany Bay.[4] Despite urbanization, it still occurs in a park in the Sydney bayside suburb of Monterey. The specific epithet interruptus is from the Latin, and refers to the sori.[5] The sori are in zig-zag rows or a v-shaped series along the frond margins, and are protected by a hairy, round or kidney shaped indusium.[6]
This plant appeared first appeared in scientific literature as Pteris interrupta in 1794, published by the German taxonomist Carl Ludwig Willdenow. In 1810, it also appeared in the Prodromus Florae Novae Hollandiae as Nephrodium propinquum, authored by the prolific Scottish botanist, Robert Brown. However, this plant has undergone considerable review, name changes and taxonomic debate.[7]
Cultivation[edit]
Likely to be a useful landscape plant, if kept damp and in gardens free of frost.[8] There are reports that the rhizome is edible.[9]
References[edit]
- ^ Bostock, Peter D. (1998). Flora of Australia 48. CSIRO.
- ^ a b Smith, Alan R. "Thelypteris interrupta (Willdenow) K. Iwatsuki [family THELYPTERIDACEAE]". JSTOR Global Plants. Flora of North America, Vol 2. Retrieved 9 January 2015.
- ^ "San Diego Fern Society".
- ^ "Doug Benson and Georgina Eldershaw. Backdrop to encounter: the 1770 landscape of Botany Bay,the plants collected by Banks and Solander and rehabilitation of natural vegetation at Kurnell".
- ^ Les Robinson - Field Guide to the Native Plants of Sydney, ISBN 978-0-7318-1211-0 page 320
- ^ Native Plants of the Sydney District - Alan Fairley & Philip Moore ISBN 0-7318-1031-7, page 40
- ^ "Cyclosorus interruptus - Australian Plant Name Index".
- ^ "San Diego Fern Society".
- ^ Les Robinson - Field Guide to the Native Plants of Sydney, ISBN 978-0-7318-1211-0 page 320
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Source | http://en.wikipedia.org/w/index.php?title=Cyclosorus_interruptus&oldid=641719546 |