64. Strobilanthes atropurpurea Nees in Wallich, Pl. Asiat. Rar. 3: 86. 1832.
翅柄马蓝 chi bing ma lan
Herbs 30-50(-100) cm tall, perennial, much branched, isophyllous or slightly anisophyllous. Stems slender, 4-angled, rooting at nodes, glabrous or pubescent. Leaves basally petiolate, apically sessile; petiole 0-2 cm, winged, glabrous or pubescent; leaf blade ovate, elliptic, or narrowly lanceolate, 1-6(-16) × 0.5-3.5(-6.5) cm, puberulent or glabrous, adaxially with linear cystoliths, secondary veins 5 or 6 on each side of midvein, base rounded to attenuate and shortly decurrent onto petiole, margin serrate to coarsely crenate, apex acute to acuminate. Inflorescences axillary, spikes, 2-7 cm, zigzag, secund, few flowered, often much reduced to flowers solitary or paired in leaf axil on main stem; bracts leaflike, ovate to subcordate, 8-10 × ca. 3 mm, apically smaller, persistent, glabrous, 3-veined or pinnately veined; bracteoles linear-oblong, ca. 5 × 2 mm. Calyx 1-1.5 cm, accrescent to 2-2.5 cm in fruit, 5-lobed almost to base; lobes linear, 11-20 × 1-1.5 mm, unequal with one slightly larger than others, glabrous or pilose, rarely gland-tipped pubescent, abaxially with linear cystoliths. Corolla pale purple, bluish purple, or rarely white, 2.5-3.5 cm, outside glabrous, inside glabrous except for trichomes retaining style; tube basally cylindric and ca. 2 mm wide for ca. 1 cm then inflated, widened to 1.5-1.8 cm, and bent at mouth; lobes oblong, ca. 3 × 4 mm, apex obtuse. Stamens 4, included; filaments glabrous, shorter pair ca. 4 mm, longer pair ca. 7 mm; anther thecae oblong, ca. 2 mm; pollen type 3. Ovary glabrous; style ca. 2 cm, glabrous; stigma acute. Capsule fusiform, 1.2-1.8 cm, glabrous, 4-seeded. Seeds ovate in outline, ca. 3 × 3 mm, pubescent with appressed trichomes; areola 0.2-0.3 mm. Fl. Jun-Oct.
Moist places on mountain slopes, forests, by rivers; 700-2900 m. Chongqing, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, India, Myanmar, Nepal, Pakistan, Vietnam].
There are no reports of Strobilanthes atropurpurea being pliestesial flowering from China or the E Himalaya, although this is a well-known phenomenon in this species in the W Himalaya.
