Ailanthus integrifolia subsp. calycina

Ailanthus integrifolia subsp. calycina (Pierre) Noot., Fl. Males. 6: 218 (1963) (syn: Ailanthus calycina Pierre; Ailanthus grandis Prain; Pongelion calycinum (Pierre) Pierre; Pongelion grande (Prain) Tiegh.);
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E. Himalaya to Indo-China, Central & E. Jawa: Assam, East Himalaya, Jawa, Vietnam as per POWO;
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Lofty trees, up to 50 m tall; bark grey. Leaves compound, paripinnate, ca. 20-40 cm long, alternate; rachis winged; petioles ca. 5-20 cm long; leaflets 8-14 pairs, alternate or opposite, lamina ca. 6-20 x 3-8 cm, ovate-lanceolate or ovate, oblique, cuneate at base, acuminate at apex, entire-sinnate along margins, glabrous; secondary nerves 10-12 pairs. Inflorescences in long panicles ca. 30-40 cm long; pedicels ca. 5 mm long; calyx irregularly lobed; lobes 3-angular, pubescent; petals ca. 4 mm long, densely hairy along margins and laxly hairy outside in male flowers; anthers ca. 2 mm long in male flowers; ovary hairy; styles 5, connate; stigma spreading. Samaras ca. 10-13 x 3-4 cm, light brown, apically twisted, rounded along outer margin, straight along inner margin. Seeds ca. 1.5 cm across, flat.
Flowering & Fruiting: December-April.
Global Distribution: India, Cambodia, Laos, Thailand, Vietnam and Indonesia (Java).
Indian Distribution: West Bengal, Sikkim, Arunachal Pradesh, Assam, Nagaland, Mizoram, Tripura and Meghalaya.
(Attributions: Ayyappan. N & V. Kokilavani, French Institute of Pondicherry, Compiled from various sources listed in the reference as per India Biodiversity Portal)
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Tree sp. from Assam KD 02 Mar, 2024: 3 images.
Attached images are tree sp. from Assam. Please ID of the species.
Date : 12.02.2024
Location: Assam
Family : ??
Genus & species :  ??
Habit :  Tree 

Ailanthus sp.??

Yes! similar to Ailanthus excelsa..

Thank You for ID of the Genus (Ailanthus). Species seems to be Ailanthus integrifolia. or A. excelsa.

Ailanthus altissima, A. excelsa  and A. integrifolia Lam. subsp. calycina (Pierre) Noot are three spp. found in Assam [According to Assam’s Flora(2005) & Plantes Assam(2021) by Prof. S. Chowdhury). Ailanthus excelsa  & Ailanthus  integrifolia Lam. subsp. calycina (Assamese name, Bor-Pat) are only two species reported from Assam[ according to Flowering Plants of India – An Annotated Checklist, Dicot-I, Vol I, Page No. 236(D.D. Pramanick, S.S.Dash & V.K. Mastakar (2020) BSI].  Assam, Arunachal Pradesh, Mizoram, Meghalaya, Nagaland, Sikkim, Tripura and West Bengal are eight the Indian states from where Ailanthus  integrifolia Lam. subsp. calycina  is reported according Checklist of Flowering plants, BSI( D.D. Pramanick, S.S.Dash & V.K. Mastakar (2020)). According to   D.D. Pramanick, S.S.Dash & V.K. Mastakar (2020) [Checklist of Flowering plants, BSI ] and S. Chowdhury [Assam’s Flora(2005) & Plantes Assam(2021)].Ailanthus triphysa is not reported from Assam. Its distribution is confined to Andaman Island, Andhra Pradesh, Karnataka, Maharashtra and Tamil Nadu [ D.D. Pramanick, S.S.Dash & V.K. Mastakar (2020)].

Yes, possible as per GBIF specimens (one and two).

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References:
POWO  Catalogue of Life  GBIF specimens (one and two) (High resolution specimens)  Flora of peninsular India India Flora Online India Biodiversity Portal Monograph on Ailanthus integrifolia ssp. calycina (Pierre) Noot.