Oplismenus compositus (L.) P.Beauv., Ess. Agrostogr. 54 1812. (Syn: Andropogon undatus Jacq.; Digitaria composita Willd.; Digitaria elatior Willd.; Echinochloa aristata Raspail; Echinochloa lanceolata (Retz.) P.Beauv.; Echinochloa lanceolata (Retz.) Roem. & Schult.; Hippagrostis composita (L.) Kuntze; Hippagrostis setaria (Lam.) Kuntze; Oplismenus africanus J.M. Wood; Oplismenus burmannii var. intermedius Honda; Oplismenus compositus var. angustifolius L.C.Chia ………………..; Oplismenus coreanus Nakai [Invalid]; Oplismenus decompositus Nees; Oplismenus elatior (L.f.) P.Beauv.; Oplismenus elatius (L. f.) P. Beauv.; Oplismenus formosanus Honda; Oplismenus hirtellus subsp. setarius (Lam.) Mez ex Ekman; Oplismenus hirtellus var. setarius (Lam.) Mez ex Ekman; Oplismenus hirtiflorus C. Presl; Oplismenus indicus Roem. & Schult. [Illegitimate]; Oplismenus jacquinii Kunth [Illegitimate]; Oplismenus junghuhnii Boerl. [Illegitimate]; Oplismenus lanceolatus (Retz.) Kunth; Oplismenus liebmannii E.Fourn.; Oplismenus owatarii Honda; Oplismenus patens Honda ..; Oplismenus polliniaefolius Honda; Oplismenus pratensis (Spreng.) Schult. & Schult.f.; Oplismenus rariflorus J.Presl; Oplismenus setarius (Lam.) Roem. & Schult. .; Oplismenus sylvaticus (Lam.) Roem. & Schult.;  Oplismenus thiebautii E.Fourn.; Orthopogon compositus (L.) R.Br. .; Orthopogon gonyrrhizus (Steud.) Miq.; Orthopogon hirtellus Eaton & J. Wright; Orthopogon junghuhnii Nees ex Steud. [Invalid]; Orthopogon junghuhnii Nees; Orthopogon longeracemosum (Steud.) Miq.; Orthopogon longiracemosus (Steud.) Miq.; Orthopogon pratensis Spreng.; Orthopogon remotus Trin. [Illegitimate]; Orthopogon setarius (Lam.) Spreng.; Orthopogon sylvaticus (Lam.) Miq.; Panicum aristatum Retz.; Panicum bidentatum Steud. [Spelling variant]; Panicum bidentulum Steud.; Panicum certificandum Steud. [Illegitimate]; Panicum compositoproximum Rottler ex Willd.; Panicum compositum L. .; Panicum elatius L.f.; Panicum gonyrrhizum Steud.; Panicum lanceolatum Retz.; Panicum longiracemosum Steud.; Panicum parciflorum Steud.;
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The leaves show extreme variation in size and undulation depending on genetics, soil type, depth, fertility, shade, altitude, etc. 
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Spikelets in simple unbranched spike ….. O. undulatifolius
Spikelets on several short branches along the rachis …. O. compositus
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Grasses week- Oplismenus:  Amazing grasses week going on. Great photography, some grasses resembling windmills others beating beautiful flowers. I am sure a lot of us will feel far more at ease  with grasses now !    Here’s my two pence to the contributions – Oplismenus not sure of species, could be burmanii? Ided by Dr Almeida seen at the forest in Mumbai on 20 Nov.’10 . As explained by Dr. Almeida this has spikelets (individual flowers) arranged in spikes all on one side, sparsely spaced sub-spikes, sessile flowers.
Ancient greek -hopliosmenus means ‘armed’. The sound also resembles in Marathi ‘aplas manus’ meaning our local person.


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Kalatope id AL011111-A: A grass of some kind…??

Location Kalatope
Altitude 2100 mts
Habit grass/herb
Habitat wild
Height 18 inches
Season September


Please check species of Oplismenus of Poaceae family.


I told you, you are now our expert on Himalayan plants.
Two species are reported from this area
Spikelets in simple unbranched spike………………………………………O. undulatifolius
Spikelets on several short branches along the rachis…………………..O. compositus
I think it should be O. compositus. We have it in Delhi also.

We too have O. compositus in the WG and I am very poor with idying grasses, but this was one among the few grasses that I had success with id.


Yes and why I remember this grass is the fact that broad leaves with light patches look very ornamental and almost form a carpet when vegetative.

 


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grass Oplismenus 2 from Hooghly 14/10/12 sk2: This grass is growing in the same shady front yard where some other plants like banana, jujube, wild herbs and shrubs are also growing.

Species : Oplismenus compositus(L.) Beauv ?
Habit & Habitat : grass growing on private unused land in my village; about 3 feet high; leaves avg. 8-10 cm x 3 cm; inflorescence terminal and axillary
Date : 14/10/12, 10.20 a.m.
Place : Nalikul (Hooghly)
searched group posts
Yes. This is also O.compositus. The leaves show extreme variation in size and undulation depending on genetics, soil type, depth, fertility, shade, altitude, etc. The other post of O.c with highly undulating leaves should not be confused as a different species.


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grass Oplismenus from Hooghly 14/10/12 sk1: The most interesting feature of this grass is that i could not find its starting point! It is trailing grass, rooting at nodes and often gets cut in midway, growing in a shady & moist private land with a few banana and other wild plants.

I am sorry that my camera doesn’t behave properly in low light.
Species : Oplismenus undulatifolius (Ard.) Roem. & Schult. ?
Habit & Habitat : trailing grass in a shady place; leaves wavy, avg. 9.5 cm x 1.8 cm; raceme terminal
Date : 14/10/12, 10.10 a.m.
Place : Nalikul (Hooghly)
Found a similar grass at – http://www.floraofvirginia.org/flprojnews.shtml

This is Oplismenus compositus.
O.undulatifolius has only a few spikelets on very short branches and is usually a grass found in high altitudes. Moreover, O.u is considered as just a variant of O.c.
The picture posted is definitely O.compositus


Oplismenus burmanica


I failed to find Oplismenus burmanica in the internet. Found a list of Oplismenus at – http://grassworld.myspecies.info/content/descriptions-o, attaching the downloaded pdf file.


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Poaceae, Cyperaceae and Juncaceae Week ::Poaceae » ID request :: PKA11:: : Attachments (2). 3 posts by 2 authors.
Sharing few photographs taken at the outskirts of Mumbai.


Oplismenus compositus


 


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Poaceae, Cyperaceae and Juncaceae Week: Poaceae 040413 MK03ID :  Attachments (6). 2 posts by 2 authors.
Please help me in finding this grass species. Is this Oplismenus sp.? The locale is shady and near a stream.
Place: Sathyamangalam RF, TN
Alt.: 231 m asl
Date: 14 Dec 2010

Oplismenus compositus



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ANOCT86 Poaceae for identification (3) : 3 posts by 2 authors. Attachments (3).

Nandi Hills
28th October 2014


Oplismenus compositus (L.) P. Beauv


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Grass for id : 8 posts by 3 authors. Attachments (2)
Please identify this grass, Loc- Karnala Bird sanctuary, Maharashtra, Oct 2014


Looks like Oplismenus compositus (L.) P. Beauv.

Please wait for experts’ views.


Certainly …, meanwhile you may browse my uploads . Thank you


Oplismenus burmannii


Oplismenus compositus


Oplismenus compositus


It is oplismenus compositus


 


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Grass for ID ABAUG01/21 : 4 posts by 2 authors. 3 images.

This grass is perhaps the most common at our altitude. Please help with the ID.
Above Mcleodganj, Dharamshala, HP
1800m

17 August 2015


I think Oplismenus compositus


Thank you … It certainly looks like Oplismenus compositus or commonly, the running mountaingrass.

I took a couple of more pictures showing the details on spikes/flowers.
Gr. oplismenos: equipped, referring to awns on the spikelets
2 images.

It is 
Oplismenus compositus forest grass grows in shade of forest

Oplismenus compositus var. undulatifolius



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SK239DEC14-2016:ID : 8 posts by 2 authors. Attachments (11)

Location: Chautara , Nepal
Altitude:  4700 ft.
Date: 12 December 2016

It is grass.


Any Poaceae member?


Tried but failed!


Poaceae is very-2 difficult.


It is Oplismenus

Probably Oplismenus compositus


Thank you … Oplismenus compositus (L.) P.Beauv. (accepted name)


Oplismenus compositus 



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Oplismenus compositus : 5 posts by 3 authors. Attachments (3)

Oplismenus compositus
Family – Poaceae
A generally small grass commonly found in shady location in sub tropical forests.
Photographed at Hamirpur, Himachal Pradesh
October 2017

Yes



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171-TSP-ID-17SEP2018-2 A monocot near Sakaleshpur for ID : 7 posts by 3 authors. Attachments (5)

Kindly examine and identify this plant 

Habit:    Herb 

Habitat:  Evergreen forest floor 

Sighting: Near Sakaleshpur,Karnataka 

Date:       04-11-2016


Oplismenus compositus
Running Mountain Grass

It is Oplismenus burmanii

Images 2-Kadmane to 5-Kadmane are of Oplismenus compositus. Image 1-Kadmane also has some Cyrtococcum patens.



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SK 2755 14 September 2020 – Grass : 9 posts by 2 authors. 6 images-3 to 7 mb each.

Location: Khadka Gaun, Kathmandu,  Nepal  
Date: 10 September 2020
Elevation: 1500m.
Habit : Wild

Oplismenus compositus


Thank you … !

Oplismenus compositus (L.) P.Beauv.


Yes common Oplismenos….. mostly found under canopy in mid hills and lesser himalayas..



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SK 2771 07 October 2020 – Grass : 7 posts by 2 authors. 6 images- 3 to 7 mb each.

Location: Nagarkot,  Kathmandu
Date: 12 September 2020
Elevation: 2041 m.
Habit : Wild 

Oplismenus compositus



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SK 2800 21 October 2020 : 12 posts by 2 authors. 6 images- 4 to 7 mb each.
Location: Phulchoki, Lalitpur
Date: 07 October 2020 
Elevation: 2201m.
Habit : Wild
Oplismenus burmannii (Retz.) P. Beauv.???

Oplismenus compositus


Thank you … !
Oplismenus compositus (L.) P. Beauv.


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At sagargad, Alibag- Oct’09?;  ID141009PHK 1 – indiantreepix | Google Groups

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Poaceae(2) from Tamdil: 1 image.
Segregating from MS,Oct.,2021/60 Poaceae for id.:
Place : Tamdil

Date : 11-11-2015
Habit : Grass
Habitat : Wild

Poaceae(2) is Oplismenus compositus



MS,Nov.,2021/42 Oplismenus sp. for id.: 2 images.
Location : Tamdil

Date : 30-04-2018
Habit : Grass
Habitat : Wild


Oplismenus compositus – wait for flowering



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References:

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