Tsuga dumosa (D.Don) Eichler

Tsuga dumosa Eichl., Nat. Pflanzenfam. [Engler & Prantl] ii. 1 (1887) 80.

Tsuga dumosa Eichl., Photos by Hoang Thanh Son

Family:

Pinaceae Spreng. ex F.Rudolphi

Synonym Name: 

Abies brunoniana Griff.

Abies brunoniana Lindl.

Abies cedroides Griff. ex Carrière

Abies yunnanensis Franch.

Micropeuce brunoniana Carrière

Picea brunoniana Spach ex Gordon

Pinus brunoniana Wall.

Pinus decidua Wall. ex Carrière

Pinus dumosa D.Don

Tsuga brunoniana (Wall.) Carrière

Tsuga calcarea Downie

Tsuga chinensis subsp. wardii (Downie) A.E.Murray

Tsuga dumosa subsp. leptophylla (Hand.-Mazz.) A.E.Murray

Tsuga dumosa var. yunnanensis (Franch.) Silba

Tsuga dumosa subsp. yunnanensis (Franch.) Silba

Tsuga dura Downie

Tsuga intermedia Hand.-Mazz.

Tsuga leptophylla Hand.-Mazz.

Tsuga wardii Downie

Tsuga yunnanensis (Franch.) Mast.

Tsuga yunnanensis subsp. dura (Downie) A.E.Murray

Vietnamese name:

Thiết sam

English Name:

Himalayan Hemlock 

Chinese name:

云南铁杉 yun nan tie shan

Nepali:

थिंगे सल्ला Thinge salla

Description: 

Tree 20-25(-40) m high and 40-50(-100) cm dbh. Bark greyish brown, fissured. Branches oblique or horizontal; crown pyramidal. First year twigs are reddish brown or greyish yellow, covered with short hairs, 2-3 years old branches greyish brown or dark grey with leaf scars. Leaves spirally arranged on branches, linear, 10-25 mm long and 2-2.5 mm wide, obtuse or rounded, rarely emarginate, upper surface green and shiny, lower surface with 2 wide bands of stomata; upper half part with small dents (rarely entire). Midrib concave on upper surface. Male cones globose, solitary and axillary, green-yellow anthers without air sac. Female cones round-ovate, solitary and terminal, slightly down curved, with many spiral scales and 2 ovules inside each scale. Seeds with thin wing in upper parts, 9 mm long, ovate, brown. Flowering in April-May, fruiting in October-November. Wood brownish yellow, structure fine and veins straight (FIPI 1996). See also Wu and Raven (1999).

Distribution:

China South-Central, East Himalaya, Myanmar, Nepal, Tibet, West Himalaya and VietNam (Bac Ha, Lao Cai)

Ecological:

Mountain slopes, river basins; 2300-3500 m.

Cultivation:

Type:

Ref:

conifers.org

ipni.org

powo.science.kew.org

flowersofindia.net

efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005387