Neyraudia arundinacea (L.) Henrard, Meded. Rijks-Herb. 58: 8 (1929) (syn: Aristida arundinacea L.; Arundo boivinii Steud. ; Arundo henslowiana Hook. & Arn. ; Arundo madagascariensis Kunth ; Arundo thouarsii T.Durand & Schinz ; Arundo trivalvis W.Hunter ; Avena koenigii Spreng.Diplachne aristata Baker ; Diplachne saccharoides Baker ; Donax thouarii P.Beauv. ; Neyraudia madagascariensis (Kunth) Hook.f. ; Neyraudia thouarsii Pilg. ex Peter ; Triraphis madagascariensis (Kunth) Hook.f. ex Prain);
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Tanzania to Malawi, Comoros, Madagascar, Hainan to Tropical Asia: Andaman Is., Comoros, Hainan, India, Jawa, Laos, Lesser Sunda Is., Madagascar, Malawi, Malaya, Myanmar, Nepal, Nicobar Is., Pakistan, Sumatera, Tanzania, Thailand, Vietnam, West Himalaya, Zaïre as per POWO;
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Perennial with short scaly rhizomes. Culms 24 m high and up to 1 cm in diameter, almost woody. Leaf-blades up to 60 cm long and 10 mm broad, mostly rolled, scabrid, the tip filiform. Panicle lanceolate, 30-80 cm long and 8-12 cm broad, dense, light brown. Spikelets at first narrowly lanceolate, becoming oblong, 6-9 mm long; florets 5-7, all bisexual; lower glume 2.2-3 mm long, the upper 2.6-3.2 mm long; lemmas lanceolate, 3.5-4.5 mm long, the side nerves ciliate with spreading white hairs 2 mm long, the lobes setaceous and 0.5-1 mm long; awn 1.5-2.5 mm long, recurved; callus oblong, 0.2-0.4 mm long; anthers 1.8 mm long.
Flowering and fruiting: October-December
Grasslands
(Attributions: Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi as per India Biodiversity Portal)
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Cortaderia selloana @ Devalsarai, Uttarakhand, June 07, 2024: 1 image.

Height: 10-12 feet.
Inflorescence: 18″
Grass had dried.
Seen growing on a steep mountain slope in a river valley.
Please confirm / correct.


Any other images?


All from the same distance. No close-up images as it was not possible to get close to the plant.


Neyraudia arundinacea


Any image showing the whole plant?


No image of the kind you are asking but please see my description (given with my primary post) for relevant details.


 

 


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References:
POWO  Catalogue of Life  GBIF (High resolution specimens) Flora of China  Flora of Pakistan  Annotated checklist of Flowering plants of Nepal Flora of peninsular India India Biodiversity Portal

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