Description from Flora of China
Chirita dimidiata R. Brown ex C. B. Clarke; C. minutiserrulata Hayata; Didymocarpus anachoretus (Hance) H. Léveillé; D. minutiserrulatus (Hayata) Yamamoto; Roettlera anachoreta (Hance) Kuntze; R. dimidiata (Wallich ex C. B. Clarke) Kuntze.
Annuals, not rhizomatous. Stems erect, 6-35(-55) cm, glabrous to sparsely pubescent or pilose apically. Stem leaves 4-10, opposite, widely spaced; petiole 0.2-4(-7) cm X 1-2.5 mm; leaf blade oblique, lanceolate to ovate or elliptic, 3-14 X 1.5-7.5 cm, thin herbaceous, sparsely puberulent to sparsely pilose or nearly glabrous, eglandular, base oblique, broadly cuneate to cordate, margin denticulate to serrulate or crenulate, apex acute to acuminate; lateral veins 6-10 on each side of midrib, conspicuous. Cymes 1-3(-9)-flowered; peduncle 2.5-5(-8.5) cm, glabrous to sparsely pubescent; bracts 2, free, lanceolate to ovate, 5-8(-15) X 2-4(-7) mm, ciliate to puberulent, margin entire to remotely denticulate, apex acute. Pedicel 0.5-1.8 cm, glabrous to sparsely pubescent or glandular puberulent. Calyx (0.6-)1.1-1.7 cm, 5-lobed from near middle; tube 3-12 mm; lobes slightly unequal, narrowly triangular to triangular, 5-7.5 X 3-4 mm, outside sparsely puberulent to pilose or glabrous, sometimes glandular, inside glabrous, margin entire, apex acuminate. Corolla white to yellow with yellow or purple markings or blue-purple, (2.3-)3.4-5.8 cm, outside glabrous to sparsely puberulent, inside glabrous; tube nearly tubular, 2.5-4 X 1-1.6 cm; adaxial lip 7-10 mm; abaxial lip 1.2-1.5 cm. Filaments 1-1.2 cm, glabrous to sparsely puberulent; anthers fused by entire adaxial surfaces, 2-3 mm, glabrous (rarely pubescent); staminodes 2 or 3, (0.2-)3-5 mm. Pistil 2.4-3 cm, glabrous or with a few hairs (rarely pubescent); ovary 1.5-2.5 cm. Stigma obtrapeziform, 3.5-4.5 mm, 2-lobed to deeply 2-lobed. Capsule erect, 7.5-12 cm. Fl. Jul-Sep, fr. Aug-Nov.
After publication of the family treatment for the Flora of China, this was treated as Henckelia anachoreta (Hance) D. J. Middleton & Mich. Möller (Taxon 60: 774. 2011).
Rocks in forests, valley streamsides; 200-2300 m. Guangdong, Guangxi, S Hunan, Taiwan, SE Xizang (Mêdog Xian), S Yunnan [Laos, N Myanmar, Sikkim, N Thailand, N Vietnam].