Cannabaceae, the hemp family of the rose order (Rosales), containing 11 genera and 270 species of aromatic herbs distributed throughout temperate parts of the Northern Hemisphere.
Apocynaceae, the dogbane family of flowering plants of the gentian order (Gentianales), including more than 415 genera and about 4,600 species of trees, shrubs, woody vines, and herbs, distributed primarily in tropical and subtropical areas of the world.
The group consists of perennial herbs distributed mainly in temperate areas of Europe, Asia, and North America.
Bacopa monniera (Family: Scrophulariaceae), commonly known as Brahmi, is an aquatic herbs distributed throughout the warmer regions of the world including Bangladesh.
The Pilosella alpicola group (Asteraceae) comprises four vicariant species of perennial herbs distributed disjunctly in subalpine areas of Europe (the Alps, Carpathians, and Balkan mountains).
Circaeaster agristis is an annual alpine herb, narrowly distributed in southwestern and northwestern China.
Pogostemon cablin is an annual herb mostly distributed in the tropical and subtropical regions of Asia.
Ypsilandra yunnanensis W. W. Sm. et J. F. Jeffr., belonging to the family of Liliaceae, is an erect, perennial herb and distributed mainly in the northwest of Yunnan Province and the southeast of the Tibet Autonomous Region of China.
