Artemisia sawanensis (Y.R. Ling & C.J. Humphries) L. Wang & G.Z. Jin, 2025

Jin, Guang-Zhao, Sheludyakova, Mariya, Abduraimov, Ozodbek, Feng, Ying & Ge, Xue-Jun, 2025, A Taxonomic Revision of Artemisia Subgenus Seriphidium (Asteraceae-Anthemideae) in China, Phytotaxa 686 (1), pp. 1-103 : 40-43

publication ID	https://doi.org/10.11646/phytotaxa.686.1.1
persistent identifier	https://treatment.plazi.org/id/A96F5038-A26B-FFB8-06BF-F96B0F89E136
treatment provided by	Felipe
scientific name	Artemisia sawanensis (Y.R. Ling & C.J. Humphries) L. Wang & G.Z. Jin
status	comb. nov.

Treatment

23. Artemisia sawanensis (Y.R. Ling & C.J. Humphries) L. Wang & G.Z. Jin View in CoL , comb. nov. ≡ Seriphidium sawanense Y.R. Ling & C.J. Humphries in Ling, Bull. Bot. Res. Harbin 10(1): 107 (1990). Type:— CHINA. Xinjiang: Fuyun , vicinity of Wuqiagou , ca. 1100 m, 11 August 1956, R.C. Ching 1768 [lectotype designated here: PE00457688 !; isolectotypes: PE00457667 !, XJBI (Herb. No. 006108!)]. Paratypes:— CHINA. Xinjiang: Burqin, 510 m, 24 August 1974, Y. R. Ling 74-1017 ( PE00457696 !, IBSC0617697 !, IBSC0617698 !); ibid., 450 m, 25 August 1974, Y. R. Ling 74-1063 ( PE00457705 !, IBSC0617705 !, IBSC0617696 !); Altay, 1325 m, 15 August 1964, G. L. Zhu 6200 ( PE00457666 !).

Perennial herbs or subshrubs, 40–60 cm tall. Stems few or numerous, erect or slightly curved upward at the base, branching from the middle or upper part, branches 5–15 cm long, obliquely upward. Lower stem leaves oblong-ovate or oblong, 3–4-pinnatisect, 3–4.5 cm long, 1–2.5 cm wide, petiole 0.5–4.5 cm long, with 5–6 segments per side, segments further pinnatisect, lobules narrowly linear, 2.5–3.5 mm long, 0.5–1 mm wide, acuminate at the tip. Middle stem leaves long-elliptic, 2–3-pinnatisect, 2.5–4 cm long, 1–2 cm wide, petiole 0.3–0.6 cm long, with pinnatifid pseudostipules. Upper stem leaves 2-pinnatisect, 1–2.5 cm long, 0.5–1.5 cm wide, with linear lobules. The grayish-white tomentum on the stems and branches partially sheds at maturity, while the tomentum on all leaves persists and the leaves have a slightly soft texture. Capitula oblong, 2–3.5 mm long, 1–1.5 mm in diameter. Synflorescence a narrow panicle. Phyllaries in 4–5 series, outer phyllaries small, ovate, middle and inner phyllaries oblong-ovate or elliptic, outer and middle phyllaries initially pilose, margins membranous, inner phyllaries semi-membranous, nearly glabrous. Bisexual florets 3–5, corolla yellow. Anthers linear, apex appendages linear, with a mucronate base. Style short. Achenes with inconspicuous fine longitudinal lines, 0.8–1.5 mm long, 0.3–0.8 mm in diameter, obovoid. Figure 33 View FIGURE 33 .

Distribution and habitat:—This species is distributed in Xinjiang, China ( Figure 34 View FIGURE 34 ). The species grows in gobi desert and semidesert steppes at elevations up to 1500 m.

Phenology:—Flowering and fruiting from August to October.

Taxonomic notes:— Ling (1982) supported the recognition of Seriphidium as a separate genus and later described the species S. sawanense Y.R. Ling & C.J. Humphries in Ling (1990: 107). Since Seriphidium has been treated as a subgenus within Artemisia based on recent multidisciplinary evidence ( Zhang 2010, Malik et al. 2017, Lu et al. 2022, Jin et al. 2023, Jiao et al. 2023), we transferred the species to Artemisia and proposed a new combination.

In the protologue of Artemisia sawanensis (≡ Seriphidium sawanense ), Ling (1990) cited five gatherings, including R.C. Ching 1768, Y.R. Ling 74-1017, Y.R. Ling 74-1063, G.L. Zhu 6200 and Exped. Xinjiang, Acad. Sin. 1768, and indicated R.C. Ching 1768 in PE as the holotype. We have traced three sheets of the gathering (R.C. Ching 1768), two from PE and one from XJBI. They have the information given in the protologue (except for the type locality) and match the original description. These three sheets should be the syntypes of this species. According to Arts. 9.12 and 9.17 of the ICN ( Turland et al. 2018), Ling’s (1990) typification should be further narrowed. Therefore, sheet PE00457688 has been designated as the lectotype, and the other two sheets as isolectotypes.

In addition, no information regarding the locality “Shawan” was found on the three sheets of the gathering R.C. Ching 1768. In fact, these three specimens were collected from Fuyun, not Shawan in Xinjiang. According to Art. 9.2 of the ICN ( Turland et al. 2018), the type locality has been corrected to “ Xinjiang: Fuyun” .

Specimens examined:— China. Xinjiang: Altay, Aweitan, 20 km south of Altay , 750 m, 6 September 1956, R.C. Ching 2761 ( LE, PE, XJBI) ; Altay , without precise location, s.a., 11 August 1956, R.C. Ching 2331 ( PE, XJBI) ; Fuyun, Wuqiagou , 1200 m, 13 August 1956, R.C. Ching 1859 ( LE, PE) ; Altay, 1 km west of Baribagai , 454.97 m, 11 October 2020, G.Z. Jin & S. Zhang jgz-086 ( XJBI) ; Fuyun, Cocosuli , 1251.72 m, 10 October 2021, G.Z. Jin & L. Yang jgz-32 ( XJBI) .