摘 要 ：描述了山茶科一新种——牦牛山山茶Camellia maoniushanensis J. L. Liu et Q. Luo，并绘制了形态图。本种与西南山茶Camellia pitardii Cohen Stuart 相近似，不同在于叶狭小，狭椭圆形，披针状椭圆形或披针形，长4~9 cm，宽1.1~2.7（-3）cm，叶面全部向上强烈内弯呈半圆形，花瓣在外面中部以下密被白色伏生短毛，外轮花丝长2.2~2.9 cm，在中部或中上部合生，易于区别。
Abstract:Camellia maoniushanensis J. L. Liu et Q. Luo, a new species of the Theaceae from Mt. Maoniushan，Xichang City，Sichuan province, China, is described and illustrated. Camellia maoniushanensis is closely related to C. pitardii Cohen Stuart, from which it differs apparently by the narrow and small leaves, narrowly elliptic, lanceolate-elliptic or lanceolate, 4-9 cm long, 1.1-2.7 (-3) cm wide, the leaf blades upward intensely incurvate to semiorbicular, petals external densely appressed hairy in infra medial, with the filaments of the outer ones 2.2-2.9 cm long, connate the middle part or supra middle part.