Strobilanthes sunhangii

Description. Undershrubs 1 - 2 m high, gregarious. Stems subterete, glabrous, slightly swollen at node. Leaves slightly anisophyllous, smaller one ca. 2 / 3 of the larger one in size; petiole 3 - 7 mm long or petiole of smaller leaf in each pair shorter, sulcate, glabrous; blades ovate to lanceolate-ovate, smaller ones 4.2 - 6.9 x 1.2 - 2.0 cm, larger ones 8.2 - 10.1 x 2.2 - 3.2 cm, both surfaces glabrous, densely covered with numerous linear cystoliths, secondary veins 3 - 5 on each side of midvein and prominent on both surfaces, base rounded to broadly cuneate, slightly oblique, margin serrulate, apex acuminate and narrowly caudate. Inflorescences of axillary spikes, simple or rarely 2 - furcate, slender, (7 -) 11 - 22 cm long; rachis glabrous; bracts and bracteoles not seen, caducous. Flowers (0.6 -) 1.0 - 2.5 (- 3.0) cm apart on rachis. Calyx 7 - 8 mm long, glabrous, 5 - lobed to middle; lobes ovate, equal, margins narrowly scarious, 1 - nerved abaxially, conspicuous after drying, apices acuminate. Corolla 2.8 - 3.3 cm long, campanulate, outside and lobes pinkish-white, inside purplish-pink, outside glabrous, inside glabrous except for bifarious hirsute retaining the style (Fig. 3 E); tube basally cylindrical, ca. 3 mm wide and ca. 6 mm long, then bent to ca. 90 ° and gradually widened to 9 - 12 mm wide at middle and 1.6 - 1.8 cm long, then secondly bent to ca. 90 ° and tube upper cylindrical 9 - 12 mm wide and 1.6 - 1.8 cm long; lobes broadly elliptic, 8 - 9 x 7 - 8 mm, apices emarginate (Fig. 3 A, B). Stamens 4, didynamous, included; the united part of filaments glabrous at base, with dense villous on middle and margin, with slightly sparse villous on upper (Fig. 3 E), shorter pair ca. 2 mm long, longer pair ca. 4 mm long; anther thecae oblong, ca. 4 mm long. Pollen grains prolate in outline, 74.1 (72.2 - 76.1) x 49.7 (48.1 - 50.4) μm, P / E = 1.49, tricolporate, ribbed pseudocolpi 12, exine reticulate (Fig. 4). Ovary ca. 5 mm long, glabrous; style ca. 1.8 cm long, with sparse gland-tipped trichomes. Capsule not seen.