藏山药，中药名。为薯蓣科植物三角叶薯蓣Dioscorea deltoidea Wall.ex Griseb.的根茎。具有补脾胃，益肺肾的功效。主治脾虚泄泻，肺虚久咳，肾虚遗精，消渴。
Cang-shan-yao, name of Chinese Medicinal Material. It refers to the rhizome of Dioscorea deltoidea Wall.ex Griseb., a plant of the Dioscoreaceae family. It has the functions of tonifying the spleen and stomach, nourishing the lungs and kidneys. It is mainly used for treating spleen deficiency diarrhea, long-term cough due to lung deficiency, kidney deficiency leading to spermatorrhea, and thirst due to kidney deficiency.

功效作用 功能
The efficacy and function of the medicine.

补脾胃，益肺肾。主治
Tonify the spleen and stomach, nourish the lungs and kidneys.主治

脾虚泄泻，肺虚久咳，肾虚遗精，消渴。用法用量
Spleen deficiency causing diarrhea, long-term cough due to lung deficiency, spermatorrhea due to kidney deficiency, and polydipsia. Dosage and administration.

内服：煎汤，6-15g；或入丸、散。化学成分
Internal administration: Decoction, 6-15g; or in pill or powder form. Chemical composition

块根、根茎均含薯蓣皂甙元，角鲨烯。根茎还含三角叶薯蓣甙，三角叶薯蓣混甙，薯蓣皂甙，着蓣皂甙元三葡萄糖甙。加工炮制 采收加工
Both the tuberous roots and rhizomes contain dioscin and beta-sitosterol. The rhizomes also contain diosgenin, dioscin, diosgenin saponins, and diosgenin triglucoside. Processing involves harvesting and further processing.

8-10月采挖洗净，切片，晒干。植物学信息 植物种属
Harvest, wash, slice, and dry the plants from August to October. Botanical information: plant species and genus.

薯蓣科植物三角叶薯蓣。形态特征
The Dioscoreaceae plant is characterized by its triangular leaves.

三角叶薯蓣缠绕草质藤本。根茎横生，姜块状。茎新鲜时绿色，干后紫褐色，有明显的纵条纹。单叶互生；有柄，柄长4-10cm；叶片三角状心形或三角状戟形，通常3裂，中间裂片先端正渐尖，两侧裂片呈圆耳状，干后不变黑，背面沿叶脉密被白色硬毛。花单性，雌雄异株；雄花常2朵簇生，排列于花序轴上，组成穗状花序；苞片膜质，圆卵形，先端尖；花被杯状，先端6裂；雄蕊6，着生于花被管基部，花药呈个字形着生；雌花序与雄花序基本相似，惟雄蕊退化成花丝状。蒴果长宽见相等，先端凹入，成熟后果实表面密生紫褐色斑点；种子卵圆形，四周环有不等宽的膜质翅。花期5-6月，果期6-9月。分布区域
Dioscorea bulbifera is a twining herbaceous vine. The rhizomes grow horizontally and resemble ginger. The stems are green when fresh and turn purplish-brown when dried, with distinct longitudinal stripes. The leaves are alternate, with petioles 4-10cm long. The leaf blades are triangular-heart-shaped or triangular-lanceolate, usually 3-lobed, with the central lobe gradually tapering at the apex and the lateral lobes resembling rounded ears. When dried, the back of the leaves is densely covered with white stiff hairs along the veins. The flowers are unisexual, with separate male and female plants. The male flowers are often clustered in pairs, arranged on the inflorescence axis to form a spike-like inflorescence. The bracts are membranous, ovate, and pointed at the tip. The floral cup is bell-shaped, with six lobes at the apex. There are six stamens attached to the base of the floral cup, with anthers attached in a cross shape. The female inflorescence is similar to the male inflorescence, but the stamens degenerate into thread-like structures. The capsules are equally long and wide, with a concave apex. When mature, the fruit surface is densely covered with purplish-brown spots. The seeds are oval, surrounded by unequally wide membranous wings. The flowering period is from May to June, and the fruiting period is from June to September. This plant is distributed in... (the distribution area is not provided in the original text).

分布于云南、西藏等地。生长环境
Distributed in Yunnan, Tibet and other areas. Growing environment.

生于海拔2000-4000m的灌木丛中及沟谷阔叶林中。
It grows in shrubs and broad-leaved forests in valleys and gullies at an altitude of 2000-4000 meters.