Rubus sumatranus ?

China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangxi, Sichuan, Yunnan, Zhejiang), Taiwan, Tibet, Japan (Honshu, Shikoku, Kyushu), South South Korea, Bhutan, Cambodia, N-India, Indonesia, Malaysia, Nepal, Sikkim, Thailand, Vietnam, Darjeeling, Myanmar [Burma] (Kachin, Sagaing), Sri Lanka as per Catalogue of Life;

[Bhutan, Cambodia, China, N India, Indonesia, Japan, Korea, Laos, Malaysia, Myanmar, Nepal, Sikkim, Thailand, Vietnam] as per Flora of China

Similar to R. pungens and R. indotibetanus but stems and branches with dense long flexuose gland-tipped bristles 2-4mm; leaflets 5 or 7, lanceolate; flowers small, calyx lobes lanceolate, 6-10mm, softly pilose and glandular hairy, not prickly; petals white, 5mm; fruit cylinder, 2 x 1 -1.5cm.
Fl. February-May
(by A.C.J Grierson & D.G Long. Flora of Bhutan. Published by RBGE. 1987 from Bhutan Biodiversity Portal)
Rosaceae plant for id, Upper Dzongu, Sikkim, April-15 : 9 posts by 5 authors. Attachments (2)
Please identify the Rosaceae plant which was found on slopes, plant height was appx 3 fts., elevation appx 2800 asl.
Well, I do not know, very curious to know, searched a found something similar at link.
But it is not R. sumatranus, for the species has 5-7 leaflets (ref. FoC)
Just now, this was identified as Rubus rosifolius by ... on Facebook.
While I was looking for the species earlier (and ultimately gave up due to lack of further clues!), I had disregarded this one because the initial description in FOC said 5-7 leaflets.
i am amused because i never really expected to see it in india
if this is really a rose than its what we call Cherokee rose
an import from china , now naturalized in parts of USA and even has become weedy, and of all things its even a state flower in one of the southern states
MoBot used to have a grand display, and in fall these weird prickly pear lik hip, never to be forgotten
they still show picture of the profuse white flowered rambling rose, enjoy it at this url:
on the second thought if its in  in china, then its likely to be in the himalayas and all probability in Sikkim too. chinese herbal medicine uses it for spleen disorders.
googling for cherokee rose found a binomial: Rosa laevigata Michx.
..., you may be correct on roses but not on the species laevigata if efloras (FoC, FoP) descriptions are correct. Thanks Anurag Ji for the update, I am not a member of facebook-eflora.
Plants with glandular hairs (can have 9 leaflets) = sumatranus (R. rosifolius Smith subsp. sumatranus (Miquel) Focke)
Plants without glandular hairs, but with glands, sometimes with sparse short glandular hairs on flowering branchlets or pedicels = rosifolius
see also
So I am finally taking it as R. sumatranus.
Is it OK ?
Number of leaflets is not at all a strong point to determine the species.
... is expected to break his silence and give his view based on his observation and/or more photographs (if there is any) of this species. The attached photographs in the initiating posts are not sufficient to species level identification.