Botanical Identification of Yanhusuo Corydalis (Corydalis yanhusuo)

To identify Yanhusuo Corydalis (Corydalis yanhusuo) accurately, examine its morphological characteristics, taxonomic classification, and diagnostic features.

Yanhusuo Corydalis (Corydalis yanhusuo) Monograph

Scientific Classification

Yanhusuo Corydalis belongs to the kingdom Plantae. Its family is Fumariaceae. The genus is Corydalis, and the species is Corydalis yanhusuo. The division, class, and order are not provided in the data.

The following table shows the full taxonomy of this plant.

Botanical Nomenclature and Synonyms

Corydalis yanhusuo is the scientific name for Yanhusuo Corydalis. It was first described by the botanist Johann Friedrich Klotzsch in 1848. The plant has several synonyms, including Corydalis ambigua and Corydalis bungei. It is also known by various common and regional names, reflecting its use in traditional Chinese medicine.

Morphological Characteristics

Yanhusuo Corydalis is a perennial herb with a rhizomatous root system. It has slender, branched stems that grow upright. The leaves are alternate, lanceolate, and have a slightly hairy surface. The inflorescence is a raceme with small, nodding flowers. The flowers are pink to purple, with two lips. The fruit is a capsule containing small, brown seeds.

Diagnostic Identification Features

Yanhusuo Corydalis can be distinguished by its distinctive purple or violet flowers with yellow stamens, narrow linear leaves, and a fleshy, yellowish rhizome. It differs from similar species like Corydalis flexuosa by its leaf shape and flower color, and from Corydalis bungei by its smaller size and different habitat preferences.

Natural Habitat and Geographic Distribution

Yanhusuo Corydalis is native to regions in China, particularly Sichuan and Yunnan provinces. It thrives in temperate climates with moderate rainfall. It prefers well-drained, loamy soils. It is typically found at altitudes between 1,500 and 3,000 meters.

Phenology and Growth Cycle

Yanhusuo Corydalis typically blooms from May to July. Seed formation occurs from late summer to early autumn. Harvest is usually conducted in late autumn when the plant has fully matured, making it ideal for accurate botanical identification.

Phylogenetic Relationships

Corydalis yanhusuo belongs to the genus Corydalis within the family Fumariaceae. Its closest relatives include other Corydalis species such as Corydalis flexuosa and Corydalis bungei. These species share similar morphological and genetic traits, reflecting their close phylogenetic relationship.