Isachne globosa

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Isachne globosa (Thunb.) Kuntze, Revis. Gen. Pl. 2: 778 1891. (Syn: Agrostis globosa (Thunb.) Poir.; Aira ischoemoides K.D.Koenig ex Kunth [Invalid]; Aira violacea Willd. ex Steud.; Eriochloa globosa (Thunb.) Kunth; Eriochloa japonica Steud. [Invalid]; Helopus globosus (Thunb.) Steud.; Isachne adstans (Steud.) Miq.; Isachne atrovirens (Trin.) Trin.; Isachne australis R.Br. .; Isachne dispar Trin. .; Isachne geniculata Griff.; Isachne globosa var. brevispicula Ohwi …….; Isachne heterantha Hayata; Isachne javana Nees ex Steud. [Invalid]; Isachne javana Nees ex Miq.; Isachne lepidota (Steud.) Walp.;  Isachne lutaria Santos; Isachne miliacea var. javanica (Buse) Henrard ……; Isachne minutula (Gaudich.) Kunth .; Isachne muricata Nees ex Steud. [Invalid]; Isachne nodibarbata (Hochst. ex Steud.) Henrard; Isachne pangerangensis var. rhabdina (Steud.) Jansen .; Isachne ponapensis Hosok.; Isachne rhabdina (Steud.) Henrard; Isachne rhabdina (Steud.) Ohwi; Isachne stigmatosa Griff.; Isachne subglobosa Hatus. & T.Koyama; Isachne virgata Nees ex Steud. [Invalid]; Milium globosum Thunb.; Panicum adstans Steud.; Panicum antipodum Spreng. .; Panicum atrovirens Trin.; Panicum australe (R.Br.) Raspail [Illegitimate]; Panicum batavicum Steud.; Panicum dispar (Trin.) Steud.; Panicum lepidotum Steud.; Panicum minutulum Gaudich.; Panicum nodibarbatum Hochst. ex Steud.; Panicum rhabdinum Steud.; Panicum stigmatosum Drury; Panicum violaceum Klein ex Thiele [Illegitimate]);
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Oman, Tropical & Subtropical Asia to W. Pacific: Andaman Is., Assam, Bangladesh, Borneo, Caroline Is., China North-Central, China South-Central, China Southeast, East Himalaya, Fiji, India, Japan, Jawa, Korea, Lesser Sunda Is., Malaya, Maluku, Manchuria, Marianas, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, New South Wales, New Zealand North, New Zealand South, Nicobar Is., Northern Territory, Oman, Philippines, Queensland, Solomon Is., South Australia, Sri Lanka, Sulawesi, Sumatera, Taiwan, Tasmania, Thailand, Victoria, Vietnam, West Himalaya as per POWO;
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Common name: Swamp Millet, Globose twinball grass, Marsh Millet
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Id30092012PHK1:
Grass for id
From kanakeshwar, Alibag

This is Isachne globosa. Look carefully and you can see the glandular band on the pedicels of the spikelets, which is characteristic of only a few of the species of the genera and only this species from peninsular india has this character

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Isachne globosa—for sharing and validation : Attachments (1). 1 post by 1 author.
Identified as Swamp Millet, pic taken at my farm at ambyvalley rd.lonavala/mulshi pune in sept11.
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Isachne globosa—-for sharing and validation : 4 posts by 2 authors. Attachments (2)
Photos taken at Aambyvalley Rd., Lonavala, Pune in Oct.16

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Isachne himalaica for confirmation : 6 posts by 4 authors. Attachments (7)
Isachne himalaica
Family – Poaceae
Habitat – Found along brooklets in marshy paddy fields sharing habitat often with Ischaemum polystachyum.
I was earlier thinking this grass to be Isachne globosa which is widely distributed species but because of its erect habitat with large globose purple spikelets, narrower leaf blades and presence in Himalayan region, i think this is Isachne himalaica.
Experts please validate…
Photographed at Hamirpur, Himachal Pradesh 
Altitude – 700metres asl.

Isachne globosa. You can see the glands on the pedicels of the spikelets, which is a characteristic feature of I.globosa. Isachne himalaica has a denser panicle with more branches and linear-lanceolate shape of panicle.
You also mentioned that it shares habitat with Ischaemum polystachyum. But the other grasses in the picture seems to be some other species. Could you kindly send pictures of inflorescence of this grass too to validate its identity.

Thanks a lot … for correcting and clearing differences.

The grass sharing habitat with Isachne globosa is Ischaemum polystachyum, which was also earlier identified by you.
Here i am sharing its link, you can see Isachne growing with it in one of the image…
https://sites.google.com/site/efloraofindia/species/m—z/po/poaceae/ischaemum/ischaemum-polystachyum
Poaceae
Grass
Place, Altitude: Tungareshwar Wildlife Sanctuary … about 270 ft asl
Date, Time: 09 OCT 10 … 09:11am
Habitat: along path in forest
Habit: small herb; about 1 ft high
Only these views, with no adequate information of other aspects may not help in ID.

Cyrtococcum accrescence. The spikelets should be plano-convex.

If it is semi-aquatic habitat, it could also be Isachne sp. Cyrtococcum is usually found in dense shade in forest areas, whereas Isachne is a plant of semi-aquatic habitats.

Many thanks … for the clarification.
This sighting is along a forest path; the soil however is almost perennially moist, species like Ludwigia and other mat forming low herbs grow around this place, indicating presence of water underground.
I would go with the tentative ID of Isachne sp.

Isachne globosa Kuntze ??

I am convinced with your ID, … Many many thanks.
I hope we have someone seconds your thought.
I have revised my notes at flickr accordingly.

Yes, Isachne globosa

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identification no130212sn1:
Kindly Id. this plant. My guess is Eragrostis uniloides
date/time:sept11
location:mulshi,pune
habitat:wild
plant habit:Grass
height:about 1-2 ft.
other info:pink colour

I think it is Isachne species

This appears close to other images at Isachne globosa (Thunb.) Kuntze

This was photographed near village Thakurwadi, Panvel region.
Date/Time: 14-08-2010 / 12:00PM
Habitat: Wild
Plant habit: herb
… had once indicated that this could be Isachne elegans.
Family: Poaceae.

Yes it is Isachne sp. Height of the plant and diameter/length of the spikelets please for species id. Also if possible post photo of dissected spikelet showing the two florets inside

This appears close to other images at Isachne globosa (Thunb.) Kuntze

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14-08-2010: Thakurwadi, Panvel region; Grass for ID-160810-PKA1 – efloraofindia | Google Groups
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This Poaceae member was seen in the grasslands at Karjat.
Please correct id, if indicated.

Photographs are superb. Thanks … for sharing.

… this looks like one at my upload from Tungareshwar WLS

… said: …………….
Cyrtococcum accrescence. The spikelets should be plano-convex.

May I request you to kindly give your view on the matter.
Interestingly, I too have relied on your comment on another thread
Dinesh ji, please await Manoj ji’s response.

Yes it is Isachne sp. For species identification, rest of the characters in the dissected spikelet may be required. … upload also could be Isachne rather than Cyrtococcum

Isachne globosa (Thunb.) Kuntze ??

This appears close to other images at Isachne globosa (Thunb.) Kuntze

 

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References:
POWO  Flowers of India

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