Sterculia rubiginosa Vent., Jard. Malmaison t. 91 1805. (syn: Balanghas rubiginosa (Vent.) Raf.; Clompanus cuneata (R.Br.) Kuntze; Clompanus ferruginea (R.Br.) Kuntze; Clompanus rubiginosa (Vent.) Kuntze; Clompanus rufa (Korth.) Kuntze; Clompanus stipularis (R.Br.) Kuntze; Sterculia angustifolia Jack; Sterculia brachycarpa Ridl.; Sterculia brevipetiolata Merr.; Sterculia clemensiae Ridl.; Sterculia cuneata R.Br.; Sterculia elliptica Airy Shaw; Sterculia ferruginea R.Br.; Sterculia humilis Elmer; Sterculia jackiana Wall.; Sterculia obovata Merr.; Sterculia rostrata Ridl.; Sterculia rufa Korth.; Sterculia stipularis R.Br.; Sterculia translucens Stapf);
Assam to W. & Central Malesia: Andaman Is., Assam, Bangladesh, Borneo, Malaya, Myanmar, Nicobar Is., Philippines, Vietnam as per POWO;
Common name: Rusty Sterculia

Vent. Hort. Malm. ii. 91, in note ; leaves oblong acute or abruptly acuminate glabrous above downy beneath base rounded stipules very long, panicle erect, calyx-lobes as long as the tube, stigmas short. Br. in Benn. Pl. Jav. Rar. 232 ; Miq. Fl. Ind. Bat. i. pt. 2, 175. S. angustifolia, Jack Mal. Misc. i. ; Hook. Bot. Misc. i. 287. S. Jackiana, Wall. Cat. 1134.
A tree ; herbaceous portions rusty-villous. Leaves 8-10 by 2.1/2 in., nerves rusty-hispid beneath ; petiole 1/4-1/2 in., hispid ; stipules 1 in., subulate-lanceolate. Panicle scarcely equalling the leaves, laxly hispid, many-flowered ; ultimate pedicels spreading, scarcely exceeding the flowers. Flower-buds short, broadly ovate, acute. Calyx 1/4 in. long, subglobose, lobes linear-subulate, incurved or spreading, hispid. Follicles 2 in., lanceo¬late, beaked, downy externally, crimson inside. Seeds 1/2 in. long, black.
(Attributions- IBIS Flora (Flora of British India))

Sterculia rubiginosa Vent. submission AS9 June21:

Here’s a new addition to site.
Sterculia rubiginosa Vent.
Common Name – Rubiginose Sterculia
Family – Malvaceae
In India Sterculia rubiginosa is found in wild and is native to Andaman and Nicobar Islands and NE India (Assam). 
Photographed in cultivation at TDU/FRLHT garden, Bengaluru, Karnataka 

In June 2021



References: POWO  Catalogue of Life  The Plant List Ver.1.1  IPNI  GBIF (High resolution specimens) Flowers of India  India Biodiversity Portal  IBIS Flora (Flora of British India) Wikipedia  singapore.biodiversity  Useful Tropical Plants  Flora fauna Web  Asian Plant