Acer stachyophyllum subsp. betulifolium (Maxim.) P. C. de Jong
Sapindaceae
Label Name: Acer tetramerum var. betulifolium
NACPEC 2005 Expedition
NACPEC05-020
2005-09-19
China, Gansu, Lintan County, Yeliguan Town (Guanjie); Yemuxia Valley; Growing in Lianhuashan, near roadside; along the Yemu River (branch of the Taohe River).
38 103
38° N; 103° E
2100 meters (6888ft)
mesic, mixed deciduous forest; slope: 30° NE.slope: 30° NE.
A tree with a height of 6 meters; D.B.H. 8 centimeters. Bark gray-green, smooth. Leaves are opposite, variable serration; 3 centimeters wide by 6.5 centimeters long; apiculate tip. Fruit: samara, at approximately 60 degree angle; 4 centimeters long.
Pressed specimen
Professor Sun collected this in the Yemuxia valley along the Yemu River (a branch of the Taohe River) before rejoining the group in the afternoon of 9/19/05. Specimens and seeds all from one branch of one plant.