识别要点:The new species is similar to A. maguanensis W.H.Chen & Y.M.Shui with three major staminodes and style longer than ovary, but differs in its elliptic bracts (vs. broadly ovate to rounded), triangular calyx lobes awny at the apex (vs. elliptic and beaked at the apex), and lateral staminodes with red glands (vs. without red glands).
形态特征:Herb perennial. Rhizome short, 6–7 mm in diam., stem absent. Leaves 8–12 in mature individuals, basal, rosette; petiole 9.4–11.6 cm long, densely brown-red vil- lous; blade herbaceous, round or broadly ovate, 4.5–13 × 3.6–9.8 cm, base obliquely cordate, apex round or obtuse, margin shallowly crenulate, slightly reflected, adaxi- ally densely depressed white pubescent, abaxially densely brown-red villous especially along the nerves; venation palmate, lateral veins 4–7 on each side of midrib, adaxially slightly depressed and abaxially prominent. Inflorescences axillary, 10–16-flowered cymes; peduncles 8–10 cm long, densely brown-red villous; bracts 2, opposite, ellip- tic, 5.6–6.4 × 2.3–2.6 mm, adaxially subglabrous, abaxially sparsely brownish hispid,margin obscurely and irregularly crenulate and ciliate above the middle, apex acute; bracteoles 2, oblong-lanceolate, ca. 5 × 2 mm, adaxially subglabrous, abaxially dense- ly brownish hispid; pedicel 0.6–1.8 cm long, brown-red hispid. Calyx actinomor- phic, 5-parted to the base, segments lanceolate or triangular, 4.5–5.2 × 2.1–2.2 mm, apex acuminate or caudate, margin entire, abaxially densely white pubescent and brown-red villous, adaxially glabrous. Corolla white or pinkish at the base, broadly campanulate, zygomorphic, ca. 1.1 cm long, ca. 0.4 cm wide at the throat, outside white glandular pubescent, inside glabrous, tube 3.2–3.5 mm long; limb 2-lipped; adaxial lip 8.8–9.2 × 8.8–9.5 mm, slightly swollen at the base, ca. 6 mm high, ca. 7 mm wide, slightly longer than abaxial lip, 4-lobed, lobes triangular, 3.1–3.3 × 1.4–1.6 mm, apex obtuse, middle lobes 2 symmetric, lateral lobes 2 oblique; abaxial lip narrowly triangular, undivided, 8.1–8.5 × 2.5–2.9 mm, apex acute. Stamens 2, adnate ca. 2 mm above base; anthers 2, coherent laterally; filaments sparsely puberu- lent, base slightly swollen, 7–8 mm long; staminodes 3, lateral 2 red on the top, ca. 1.5 mm long, adnate to ca. 1.5 mm above base, middle white on the top, ca. 3.1 mm long. Disc ring-like, yellow, 0.7–0.8 mm high, margin entire. Pistil 1.4–1.6 cm long; ovary oblong, 3–4 mm long, sparsely pubescent; style 7–8 mm long, sparsely pubes- cent; stigma 1, capitate. Dry capsule straight, elliptic, 7–8 × 2.1–2.3 mm, dehiscing loculicidally, valves 2.