Ornithoboea arachnoidea (Diels) Craib

Stems 5-45 cm, cobwebby-woolly. Petiole 3-10 cm; leaf blade ovate to broadly ovate, seldom narrowly elliptic to oblong, 3.5-15 X 3.5-10 cm, adaxially puberulent, abaxially puberulent, villous to cobwebby-woolly along veins, margin serrate, apex acute to obtuse. Peduncle 2-4 cm, cobwebby-woolly; bracts inconspicuous. Pedicel 0.5-2.5 cm. Calyx segments reflexed, ovate to obovate or oblong ovate, 8-10 X 2.5-4 mm, outside woolly. Corolla blue to blue-purple, ca. 1.5 cm, densely purplish ciliate inside adaxial lip, purplish bearded on abaxial lip from central lobe to mouth; tube 4-5 X 5-6 mm; adaxial lip 3-4 mm, lobes ca. 1 mm; abaxial lip 0.9-1.1 cm, lobes oblong, 4-5 mm. Stamens ca. 4 mm, glabrous; filaments simple; staminodes 3, ca. 2 mm. Ovary ovoid, ca. 2.5 mm, densely woolly to pubescent. Style 6.5-7.5 mm, sparsely puberulent. Capsule 1.2-2 cm. Fl. Jul-Aug, fr. Jul-Oct.

W Yunnan [NW Thailand].

Crevices of rocks or slopes; 1800-2000 m.

Boea arachnoidea Diels, Notes Roy. Bot. Gard. Edinburgh 5: 225. 1912; Ornithoboea forrestii Craib.

Ornithoboea arachnoidea là một loài thực vật có hoa trong họ Tai voi. Loài này được (Diels) Craib mô tả khoa học đầu tiên năm 1919.

蛛毛喜鹊苣苔（学名：Ornithoboea arachnoidea）为苦苣苔科喜鹊苣苔属下的一个种。