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Actinoscirpus grossus
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Family:
CYPERACEAE
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Citation: Actinoscirpus grossus (L.f.) Goetgh. & D.A.Simpson, Kew Bull. 46: 171. 1991.
Scirpus grossus L. f., Suppl. Pl. 104. 1781; Hook. f., Fl. Brit. India 6: 659. 1893; Gamble, Fl. Pres. Madras 1154(1156). 1931.
Hymenochaeta grossa (L.f.) Nees in Wight, Contr. Bot. India 119. 1834.
Schoenoplectus grossus (L.f.) Palla, Allg. Bot. Syst. 17: Beibl. 3. 1911; Rejani, Cyperac. Kerala 417. 1991; Joseph, Aquatic Angiosp. Malabar 396. 1991; Sunil & Sivadasan, Fl. Alappuzha Dist. 804. 2009.
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Malayalam Name(s):
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Tamil name(s):
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English name(s):
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Description:
Stoloniferous perennial, to c. 2 m. Stem sharply trigonous, edges scabrous, sides concave. Leaves c. half of stem length; sheaths 14-20 cm, soft, yellowish green, disintegrating into fibres; blades 60-100 cm x 5-27 mm, flat, greyish green, keeled, margins slightly revolute, scabrous. Anthelodium, c. 12 x 10 cm; bracts to 60 x 1.5 cm; primary branches more than 10, up to 60 mm, two from each basal tubular prophyll, tubular prophylls to 12 mm, with spongy basal part, scabrous; secondary anthelodia up to 65 mm, secondary branches up to 35 mm, two from each tubular prophyll, tubular prophylls c. 5 mm; tertiary anthelodia to c. 30 mm, tertiary branches each ending with solitary spike or with additional peduncled spike (occasionally even small quaternary anthelodium is produced), peduncles to 5-12 mm, bracts c. 4 mm, tubular prophyll c. 3 mm; spikes 3-7 x 2-4 mm, ovoid; glumes 2.4-2.7 mm, cymbiform, barbed, apex rounded, with short mucro, sides nerveless, brown, margin narrowly fringed. Perianth bristles slightly longer than fruit; stamens 3, anther c. 1.5 mm. Nut 1.5-1.6 x 1.1-1.2 mm, widely obovoid, apiculate, finely papillose, glossy, pale brown or brown.
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Habit:
Herb
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Flowering & Fruiting:
August-December
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District(s):
Alappuzha, Kottayam, Kozhikkode, Ernakulam
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Medicinal:
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Habitat:
Marshy fields
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Distribution:
Indo-Malesia
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Aquatic:
Yes
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
Brown
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Weed:
Yes
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Monocot/Dicot:
Monocotyledonous Plants
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Exotic:
No
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
Mancombu, Thakazhy
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