Parnassia delavayi Franchet, 1896: 267

Yu, Huiying, Guo, Feiyi, Shu, Yumin & Zhang, Zhixiang, 2018, Taxonomic note of Parnassia (Celastraceae) in China: a reassessment of Subsect. Xiphosandra, PhytoKeys 114, pp. 43-54 : 43

Parnassia delavayi Franchet, 1896: 267 Fig. 2

= Parnassia brevistyla (Brieg.) Hand.-Mazz., 1931: 434. Syn. nov.

≡ Parnassia delavayi Franch. var. brevistyla Brieger, 1922: 400. Syn. nov. Type: China. Tibet, ' Beju-Batang, Nadelwalder bei Chieda am Anstieg zum Passe Mala ', 3500 m alt. (syntypes: not located); China. Schenhsi, Qingling, Taibaishan, Tempels Wan-schuen-gou, 2600 m alt., s.n. 2720 (syntypes: not located).

= Parnassia leptophylla Hand.-Mazz., 1941: 120. Syn. nov. (Fig. 3 ). Type: China. Sichuan, Baoxing, KL Chu 3231 (lectotype designated by Shu et al. 2017: PE00866146!; isolectotypes: IBSC0145403!, PE00865960!, SZ00179815!). Fig. 3 .

Type.

CHINA. Yunnan, Eryuan (Lan-kong), Hee Chanmen, 2800 m alt., 16 August 1883, Delavay 217 (lectotype designated by Shu et al. 2017: P05556394!; isolectotypes: P00709355!, P00709356!, P05556395!, P06392624!); CHINA. Yunnan, Eryuan, Lanho, Yanginchan, 7 August 1883, Delavay 130 (syntypes: P00709357!, P00709358!, P06392623!)

Description.

Stems 1-5, 10-40 cm, with 1 cauline leaf proximally or near middle. Basal leaves 3-7(10); petiole 2-16 cm; blade reniform, cordate or ovate-cordate, 1-4 × 1-4.5 cm, base deeply cordate to subcordate, apex rounded, apiculate. Flower 2-4.5 cm in diam.; hypanthium turbinate or campanulate. Sepals oblong, ovate to obovate, 4-13 × 2-8 mm, margin entire, apex rounded-obtuse. Petals white, sometimes green at base, obovate or oblong-obovate, 8-25 × 5-12 mm, base attenuate, margin erose in proximal 1/3, apex rounded or acute. Anthers ellipsoid, connective projected at apex into a lanceolate appendage, to 5 mm; filaments ca. 5.5 mm; staminodes 3-6 mm, shallowly 3-lobed or to half their length, rarely lateral ones 2-lobulate, lateral lobes usually wider than central one. Ovary superior, subglobose; stigma 3-lobed. Capsule obovoid with 3 thickened, longitudinal angles. Seeds brown, glossy, oblong. 2n = 14.

Figures

Figure 2. Parnassia delavayi, lectotype (P 05556394).

Figure 3. Parnassia leptophylla, lectotype (PE 00866146).