Lithocarpus elegans (Blume) Hatus. ex Soepadmo, Reinwardtia 8: 236 1970. (syn: Arcaula spicata Raf.; Lithocarpus collettii (King ex Hook.f.) A.Camus; Lithocarpus elegans var. collettii (King ex Hook.f.) H.B.Naithani & S.N.Biswas; Lithocarpus finetii (Hickel & A.Camus) A.Camus; Lithocarpus gelinicus C.C.Huang & Y.T.Chang, nom. illeg.; Lithocarpus gracilipes C.C.Huang & Y.T.Chang; Lithocarpus grandifolius (D.Don) S.N.Biswas; Lithocarpus intermedius Barnett; Lithocarpus microcalyx (Korth.) A.Camus; Lithocarpus rhioensis (Hance) A.Camus; Lithocarpus spicatus Rehder & E.H.Wilson; Lithocarpus spicatus var. collettii (King ex Hook.f.) Hand.-Mazz.; Lithocarpus spicatus var. elegans (Blume) A.Camus; Lithocarpus spicatus var. glaberrimus (Blume) A.Camus; Lithocarpus spicatus var. gracilipes (Miq.) A.Camus; Lithocarpus spicatus var. placentarius (Blume) A.Camus; Lithocarpus spicatus var. poilaneana A.Camus; Lithocarpus spicatus var. polycarpus A.Camus; Lithocarpus spicatus var. typica A.Camus, not validly publ.; Pasania finetii Hickel & A.Camus; Pasania mixta (A.DC.) Oerst.; Pasania placentaria (Blume) Oerst.; Pasania pseudomolucca (Morales ex A.DC.) Oerst.; Pasania spicata Oerst.; Quercus anceps Korth.; Quercus arcaula var. microcalyx (Korth.) Blume; Quercus arcaula var. racemosa Blume; Quercus arcola Buch.-Ham. ex Wall., nom. nud.; Quercus depressa Blume; Quercus elegans Blume; Quercus glaberrima Blume; Quercus gracilipes Miq.; Quercus grandifolia D.Don; Quercus hystrix var. longispica Gamble; Quercus microcalyx Korth.; Quercus mixta A.DC.; Quercus placentaria Blume; Quercus pseudomolucca Morales ex A.DC.; Quercus racemosa Jack, nom. illeg.; Quercus rhioensis Hance; Quercus sphacelata Blume; Quercus spicata Sm., nom. illeg.; Quercus spicata var. collettii King ex Hook.f.; Quercus spicata var. depressa (Blume) King; Quercus spicata var. glaberrima (Blume) A.DC.; Quercus spicata var. gracilipes (Miq.) A.DC.; Quercus spicata var. latifolia Scheff.; Quercus spicata var. microcalyx (Korth.) Miq.; Quercus spicata var. placentaria (Blume) Miq.; Quercus spicata var. racemosa Miq.; Quercus squamata Roxb.; Synaedrys pseudomolucca (Morales ex A.DC.) Koidz.; Synaedrys spicata Koidz.);
E. Himalaya to S. Central China and Malesia: Assam, Bangladesh, Borneo, Cambodia, China South-Central, East Himalaya, Jawa, Laos, Malaya, Myanmar, Nepal, Sulawesi, Sumatera, Thailand, Tibet, Vietnam as per POWO;

Trees 10-15 m tall, glabrous except for inflorescences. Petiole 5-10 mm; leaf blade obovate, oblanceolate, or sometimes oblong, 15-40 × 5-15 cm, leathery to rigidly papery, concolorous, base often oblique and ± auriculate, subrounded, or rarely cuneate, margin entire, apex acute; secondary veins 13-20 on each side of midvein, fusing near margin; tertiary veins abaxially conspicuous. Male inflorescences usually solitary, occasionally 3-many in a panicle; rachis tomentose with short hairs, rarely glabrescent. Female inflorescences terminal, usually in pairs, to 20 cm; rachis base 1-1.6 cm thick; cupules in clusters of 3-5, usually 1 or 2 developed. Cupule cupular, ca. 2.6 cm in diam., enclosing 1/3-2/3 of nut, wall to 4 mm near base and woody; basal bracts often connate into horizontal ridges, broadly ovate to broadly rhomboid, puberulent. Nut depressed globose, 1.5-2.2 × 2-2.6 cm, apex flat and ± concave or rarely rounded and pointed, wall 1.5-2 mm thick; scar 1.6-2 cm in diam., concave but center sometimes convex.
Broad-leaved evergreen forests; 600-1900 m.
(Attributions- Compiled from secondary sources listed in references by Kishor Deka for the Assam Biodiversity Portal project as per India Biodiversity Portal)

Lithocarpus elegans (Blume) Hatus. ex Soepadmo: 2 very high resolution images.

Location: Godawari, Lalitpur
Date: 11 March 2021
Altitude: 1600m.
Habitat : Wild


MS,Oct, 2021/11 Lithocarpus sp. for id: 3 images.
Location : Tan tlang
Altitude : c.1,850
Date : 05-10-2018
Habit : Tree
Habitat : Wild

Lithocarpus dealbatus (Hook.f. & Thomson ex Miq.) Rehder ?

What are the keys in your book?

Going by the keys, it is Lithocarpus elegans



References: POWO  Catalogue of Life  The Plant List Ver.1.1  WCSP  IPNI  GBIF (High resolution specimens) Flora of China  Annotated checklist of Flowering plants of Nepal  India Biodiversity Portal Wikipedia  Useful Tropical Plants RBGE Asian Plant