Solms-Laubachia tianbaoshanensis, 2018

Chen, Hongliang, Al-Shehbaz, Ihsan A., Yue, Jipei & Sun, Hang, 2018, Solms-laubachia tianbaoshanensis (Brassicaceae), a new species from NW Yunnan, China, Phytotaxa 379 (1), pp. 39-48 : 45

Solms-laubachia tianbaoshanensis H.L. Chen, Al-Shehbaz, J.P. Yue & H. Sun , sp. nov.

Type: — CHINA. NW Yunnan, Shangri-la city, Tianbaoshan, 3890 m ( N27.604767°, E99.889954°), 18 July 2014, WWW025 ( holotype KUN!, isotype KUN!). Figs. 1 & 4.

Herbs 3–12 cm tall, sparsely subhirsute with crisped simple trichomes to 2 mm long; caudex covered with petioles of previous years. Petioles of basal leaves 0.6–1.8 cm long, thickened, persistent, ciliate; leaf blade filiform to narrowly linear or lanceolate, (1–)1.5–5.0 cm × 1–4 mm, sparsely pubescent with simple trichomes, ciliate, base attenuate, apex acute or obtuse. Cauline leaves absent. Flowers solitary. Fruiting pedicels erect to ascending, 1.2–3 cm long, pubescent with simple trichomes. Sepals oblong or oblong-linear, 4–8 × 1–2 mm, persistent, pubescent with simple trichomes, ciliate. Petals pink, blade obovate to broadly so, 6–12 × 4–9 mm; claw 6–10 mm long. Filaments of median stamens 4–5.5 mm long; anthers 1.4–1.6 mm long. Ovules 8–12 per ovary. Fruit linear-lanceolate, sparsely to densely subhirsute along proximal half of valves and along margin; septum complete, 3.5–10 cm × 4–8 mm; style obsolete; stigma slightly 2-lobed. Seeds biseriate, broadly ovate, 2.5–4 × 2–2.5 mm. Fl. May–Jul, fr. Jun–Sep.

Distribution and habitat: —Currently known only from Tianbaoshan, Shangri-la city, NW Yunnan, China, at the elevation of 3890–4150 m, occurring on scree slopes and alpine meadows.

Additional specimens examined ( paratypes):— CHINA. Yunnan, Shangri-la city, Tianbaoshan, 25 May 2015, Y.S. Chen 1146 (KUN). Yunnan, Shangri-la city, Tianbaoshan, 6 July 2016, YZC280 (KUN).

Figures

FIGURE 1. Images of Solms-laubachia tianbaoshanensis H.L. Chen, Al-Shehbaz, J.P. Yue & H. Sun. A. Habitat on a scree slope; B. Caudex; C. Persistent petioles of basal leaves; D. Flowering plant; E. Stamens and pistil; F. Plant with fruit. (Photo A by Yongsheng Chen, photos B and C by Hongliang Chen, photos D and E by Xinxin Zhu, photo F by Qia Wang.