A Grass with One Flower and One Leaf - Single-Leaf Grass

（国家一级重点保护植物）

(First-Grade State Protection Plant)

独叶草（拉丁学名：Kingdonia uniflora Balf.f. et W. W. Sm）为多年生小草本，无毛，根状茎细长，自顶端芽中生出1叶和1条花葶。芽鳞约3个，膜质，卵形，长4-7毫米。独叶草分布于云南、四川、甘肃、陕西，生海拔2750-3900米间山地冷杉林下或杜鹃灌丛下。对研究被子植物的进化和该科的系统发育有科学意义，因该种天然更新能力差，加之森林的破坏采挖，植株数量逐渐减少，自然分布日益缩减。它具有散瘀，活血，止痛等医用价值，故又名化血丹。

Single-Leaf Grass (Scientific Latin Name: Kingdonia uniflora Balf.f. et W. W. Sm) is a small perennial herb, glabrous, with elongated rhizomes, one leaf and one flower scape arising from the apical bud.There are about 3 ovoid bud scales with membranes, 4-7 mm long. It is distributed in Yunnan, Sichuan, Gansu and Shaanxi and grows under Abies forest or rhododendron thickets in mountainous areas between 2750 and 3900 meters abovesea level.It is of scientific significance to study the evolution of angiosperms and the phylogeny of this family. Due to its poor natural reproduction ability, coupled with the destruction and excavation of forests, the number of plants is gradually decreased, and the natural distribution is increasingly reduced.It has the medical value of dispersing blood stasis, activating blood circulation, relieving pain, etc., so it is also known as the “Blood AdjustmentPanacea”.