Lithocarpus chittagongus

Lithocarpus chittagongus
	Lithocarpus chittagongus (top right) with Lithocarpus collettii (bottom left and right) and Lithocarpus sp.
Systematics
	Eurosiden I
Order :	Beech-like (Fagales)
Family :	Beech family (Fagaceae)
Subfamily :	Quercoideae
Genre :	Lithocarpus
Type :	Lithocarpus chittagongus
Scientific name
	Lithocarpus chittagongus
	( King ex Hook.f. ) Merr.

Lithocarpus chittagongus is an evergreen tree of the genus Lithocarpus in the subfamily Quercoideae, beech family(Fagaceae). It is endemic to the Chittagong Hill Tracts in Bangladesh .

features

Lithocarpus chittagongus is a medium-sized evergreen tree . All parts of the plant have a smooth surface, with the exception of the upright male flower clusters, which are covered with fine fuzz . The 12.5 to 17.5 cm long leaves have 1.2 to 2.5 cm long petioles and lanceolate leaf blades with a large number of secondary nerves. The fruit cups have a diameter of 1.2 to 2.5 centimeters and are woody. They enclose the egg-shaped acorns , which have a diameter of 0.7 to 1.5 centimeters, only at the base up to a maximum of half. Lithocarpus chittagongus can be distinguished from closely related species by the large number of secondary nerves .

Occurrence

The first finds came from the Kodala mountains ( 22 ° 26 '44.2 " N , 92 ° 6' 22.3" O ) in the Upazila rank Unia about 35 kilometers north-west of Chittagong in the CHT , Division Chittagong in Southeast of Bangladesh . The species is endemic to the Chittagong Hill Tracts. 22.4456 92.1062

Systematics

The genus Lithocarpus is widespread with more than 300 species in East and Southeast Asia. It stands together with the closely related oaks ( Quercus ) in the subfamily Quercoideae of the beech family (Fagaceae). At the time of the first description, Lithocarpus chittagongus was also counted among the oaks. In 1912 Quercus spicata and its varieties were placed in the genus Pasania by Ernst Max Schottky and in 1920 by the German-American Alfred Rehder in the genus Lithocarpus . Paul Robert Hickel and Aimée Antoinette Camus raised the variety chittagonga to the species Pasania chittagonga in 1921 . As part of his processing of the botanical finds made by the Vernay Cutting Expedition to Burma in 1938 and 1939 , Elmer Drew Merrill finally placed the species in the genus Lithocarpus .

Initial description

The first description of Lithocarpus chittagongus took place in 1888 under the name Quercus spicata var. Chittagonga by the British botanist George King in the fifth volume of Joseph Dalton Hooker's Fauna of British India . The species name chittagongensis refers to the locality of the type, the Chittagong Hill Tracts.

Synonyms

Querqus spicata Sm. Var. Chittagonga King ex Hook.f.
Lithocarpus spicata Rehder & EHWilson var. Chittagonga Rehder
Pasania spicata Oerst. var. chittagonga Schottky
Pasania chittagonga (King ex Hook.f.) Hickel & A.Camus

Individual evidence

^ ^A ^b ^c Joseph Dalton Hooker : Fauna of British India. Vol. V . L. Reeve, London 1890, pp. 609-610, digitized .

^ ^A ^b George King: The Species of Artocarpus Indigenous to British-India. The Indo-Malayan Species of Quercus and Castanopsis . In: Annals of the Royal Botanic Garden, Calcutta 1889, Volume II, pp. 17-107, i-iii, panels 1–104, here p. 49, p. 90 and panel 42, digitized .

↑ ^a ^b ^c Ernst Max Schottky : The oaks of the extratropical East Asia and their plant-geographical significance . In: Botanical Yearbooks for Systematics, Plant History and Plant Geography 1912, Volume 47, pp. 617–708 and Tables XXXVII-XXXVIII, here p. 665 and p. 701, digitized .

^ ^A ^b Paul Robert Hickel and Aimée Antoinette Camus : Les Chênes d'Indo-Chine . In: Annales des Sciences Naturelles. Botanique 1921, 10 ^e Série, Volume III, pp. 377-409, here p. 390, digitized .

^ ^A ^b Elmer Drew Merrill : The upper Burma plants collected by Captain F. Kingdon Ward on the Vernay-Cutting expedition, 1938-39 . In: Brittonia 1941, Volume 4, No. 1, pp. 20-188, doi: 10.2307 / 2804985 .

^ Alfred Rehder: New Species, Varieties and Combinations from the Herbarium and the Collections of the Arnold Arboretum . In: Journal of the Arnold Arboretum 1920, Volume 1, pp. 121-147, here p. 131, digitized .

[Hooker-1] A ^b ^c Joseph Dalton Hooker : Fauna of British India. Vol. V . L. Reeve, London 1890, pp. 609-610, digitized .

[King-2] A ^b George King: The Species of Artocarpus Indigenous to British-India. The Indo-Malayan Species of Quercus and Castanopsis . In: Annals of the Royal Botanic Garden, Calcutta 1889, Volume II, pp. 17-107, i-iii, panels 1–104, here p. 49, p. 90 and panel 42, digitized .