• Scientific Name: Caryopteris incana (Thunb. ex Houtt.) Miq.
• Ref: Ann. Mus. Bot. Lugduno-Batavi. 2: 97. 1865.
• Synonyms: Nepeta incana Thunberg ex Houttuyn, Nat. Hist. 2(9): 307. 1778;
  Barbula sinensis Loureiro;
  Caryopteris ovata Miquel;
  C. sinensis (Loureiro) Dippel;
  Mastacanthus sinensis (Loureiro) Endlicher ex Walpers.
• English Common Name: Blue beard
• Chinese Common Name: 兰香草 lan xiang cao
• Japanese Common Name: ダンギク（ｄａｎｇｉｋｕ）, だんぎく (段菊)
• Family: Lamiaceae
• Genus: Caryopteris
• Distribution: Slopes along roadsides; 100-800 m. Anhui, Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Zhejiang [Japan, Korea].
• Type: Japan

 Herbs, perennial, 25-50 cm tall, aromatic, with woody base, pubescent. Petiole 0.3-1.7 mm; leaf blade narrowly lanceolate, lanceolate, oblong, or ovate, 1.5-9 X 0.4-4 cm, thickly papery, pubescent, yellow glandular, base cuneate, subrounded, or truncate, margin coarsely serrate to rarely subentire, apex obtuse to acute. Inflorescences axillary or terminal, dense corymbose cymes. Calyx cup-shaped, ca. 2 mm, outside pubescent. Corolla purplish to bluish, tube ca. 3.5 mm, lower lobe fringed, both surfaces pubescent. Stamens and style exserted. Ovary pubescent. Fruiting calyx 4-5 mm. Fruit ca. 2.5 mm in diam., hirsute, nutlets with winged edges. Fl. and fr. Jun-Oct.(Flora of China)