Rubus treutleri

Rubus treutleri Hook.f., The flora of British India (Rosaceae) 331 1878. (syn: Rubus arcuatus Kuntze; Rubus moluccanus var. treutleri (Hook. fil.) Kuntze; Rubus rosulans Kuntze; Rubus tonglooensis Kuntze);  

China (NW-Yunnan), Tibet, Bhutan, Nepal, Sikkim, India, Myanmar [Burma] (Kachin), Chumbi as per Catalogue of Life;

Scrambling or climbing shrub with long slender shoots; branchlets with dense gland-tipped bristles and scattered slender prickles. Leaves suborbicular 6-14 x 6-14cm, 3-5-lobed, base cordate, lobes broadly acute, serrate, pubescent above, softly pilose beneath; petioles 3-6cm, densely covered with soft hairs, gland-tipped bristles and scattered short prickles; stipules 2cm, divided to base into 4-5 linear segments. Flowers 3-5 in short axillary racemes; bracts pectinate. Calyx lobes ovate, 12-15mm, 3-5-toothed at apex, tomentose and with gland-tipped bristles and prickles. Petals 10mm, pink. Fruit 1.5-2cm with many drupelets.
Fl. June-August
Cool broad-leaved and Hemlock forests
(Attributions- A.C.J Grierson & D.G Long. Flora of Bhutan. Published by RBGE. 1987 from Bhutan Biodiversity Portal)

https://groups.google.com/group/indiantreepix/attach/2e6345750e499/Rubus%20sp..JPG?part=0.1&authuser=0&view=1
 
MS Feb,2020/02 Rubus sp. (rugosus ?) for ID : 7 posts by 3 authors. Attachments (1)
Location Ailawng, Mizoram
Date : 16-06-2018
Habit : Straggling prickly shrub
Habitat : Wild
R. rugosus seemed to be correct 
Yes, may be Rubus rugosus Smith as per comparative images at Rubus
May I request you to pl. post the keys from your book to further analyse this plant.
https://groups.google.com/group/indiantreepix/attach/43b80c671a4fe/20200217_143449.jpg?part=0.1&authuser=0&view=1
 
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