Lysimachia dabieshanensis Kun Liu & S.B.Zhou, 2014

Liu, Kun, Zhou, Shou-Biao, Chen, Yan-Song & Hong, Xin, 2014, Lysimachia dabieshanensis sp. nov. (Primulaceae), a new species from Dabieshan Mountain, China, Phytotaxa 174 (2), pp. 119-122 : 119-121

publication ID	https://doi.org/ 10.11646/phytotaxa.174.2.8
persistent identifier	https://treatment.plazi.org/id/038B879A-7F0F-FFDC-70C9-F9709DE9DEC3
treatment provided by	Felipe
scientific name	Lysimachia dabieshanensis Kun Liu & S.B.Zhou
status	sp. nov.

Treatment

Lysimachia dabieshanensis Kun Liu & S.B.Zhou View in CoL , sp. nov. ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 )

Differing from Lysimachia melampyroides var. amplexicaulis Chen et C.M. Hu and L. klattiana Hance in being a relatively taller plant (40–110 cm), having opposite and larger leaves with their bases fusing around the stem at lower nodes, veins obviously raised abaxially, and the terminal inflorescences in capitate clusters at the apex of stems and branches.

Type: –– CHINA. Anhui Province: Jinzhai County, Qianping village , growing at margins of mountain woodlands, grassy slopes, mountain streamsides, elevation ca. 780 m, 2 June 2009 (fl.), Kun Liu 2009030 (holotype, ANU!, isotypes, IBK!) .

Perennial herbs, 40–110 cm tall, stems 2 to many, erect, dull brownish red at base, branched from the middle, with indumentum of dense multicellular hairs 1–3 mm long. Leaves 6 to many in a whorl at apex of stems and branches, opposite at lower nodes, sessile, leaf blade elliptic-lanceolate, 3–14 × 1–4 cm, apex acuminate, base cuneate, or semiclasping and connate with opposite leaf base at lower nodes of stem and fertile branch, densely transparent glandular striate, with dense multicellular hairs on both sides initially, and sparse multicellular hairs abaxially when mature; veins 4–7 pairs, obviously raised abaxially; veinlets visible. Inflorescences terminal, in capitate clusters at apex of stem and branch, 6 to many flowers, up to 30–40, rarely with flowers in axils of lower leaves. Pedicel 1–1.5 cm, sparsely multicellular hairy. Calyx 10–14 mm; lobes lanceolate, adaxially glabrous, abaxially sparsely multicellular hairsy and glandular, apex acuminate-subulate. Corolla yellow, subfunnelform, 1.2–1.9 cm; tube 3–4.5 mm; lobes narrowly elliptic, 4–7 mm wide, brown or black glandular striate, apex obtuse. Filaments connate basally into a tube 3–4 mm high, free parts 2.5–4 mm; anthers ovate, dorsifixed, opening by lateral slits, ca. 1.5 mm. Ovary ovoid. Style ca. 5–6.5 mm. Capsule subglobose, 3.5–5 mm in diam.

Additional collection: –– China, Anhui Province: Yuexi County, Yaoluoping Village, ca. 1050 m, 12 June 2008, Kun Liu 2008023 ( ANU!); Jinzhai County , Qianping Village , ca. 810 m, 1 June 2009, Kun Liu 2009032 ( ANU!) .

Distribution and habitat:–– Lysimachia dabieshanensis is endemic to Mt. Dabieshan, south-western Anhui, China (including Jinzhai County, Yuexi County, etc.), growing in margins of mountain woodlands, grassy slopes, mountain streamsides at 500–1200 m elevation. This species is fairly common there and therefore proposed as Least Concern using IUCN (2001) criteria.

Etymology:—Named after Dabieshan mountain in Anhui province.

Vernacular name:— China: dabieshanguoluhuang.

Phenology:—Flowering May–June, fruiting July–August.

Similar species:—Taking into consideration the existence of the opposite leaves with semiclasping and connate leaf base at lower nodes of stem, the terminal and capitate inflorescences at apex of stems and branches, and the filaments connate into a tube at base, L. dabieshanensis is obviously a member of series Elatae section Nummularia subgenus Lysimachia . This series comprises about 4 species in China ( Chen and Hu, 1989). L. dabieshanensis is morphologically close to L. melampyroides var. brunnelloides and L. klattiana based on leaf and flower shape, but it can be easily distinguished by several other characters (see Table 1).