Elymus fedtschenkoi Tzvelev

Alieva, Kumush B., Peng, Yilong, Usupbaev, Adilet, Tojibaev, Komiljon Sh., Yusupov, Ziyoviddin, Ergashov, Ibrokhimjon, Azimova, Dilnoza & Jiang, Zhilin, 2025, Synopsis of the genus Elymus (Poaceae) in Uzbekistan (Middle Asia) with a description of Elymus uzbekistanicus a new species from Turkestan Mts, PhytoKeys 257, pp. 9-50 : 9-50

2. Elymus fedtschenkoi Tzvelev in Novosti Sist. Vyssh. Rast. 10: 21 (1973)

≡ Roegneria fedtschenkoi (Tzvelev) N. R. Cui in Claves Pl. Xinjiang. 1: 158 (1982), nom. superfl.

= Agropyron curvatum Nevski in Izv. Bot. Sada Akad. Nauk S. S. S. R. 30: 629 (1931 publ. 1932). — non Elymus curvatus (Nevski) D. F. Cui in Fl. Xinjiangensis 6: 197 (1996), nom. illeg.; ≡ Roegneria curvata (Nevski) Nevski in Trudy Sredne-Aziatsk. Gosud. Univ., Ser. 8 b, Bot. 17: 67 (1934).

= Agropyron macrolepis Drobow in Repert. Spec. Nov. Regni Veg. 21: 41 (1925). Type. Uzbekistan. Prov. Syr-darja. Distr. Aulie-ata. Fl. Arabik. (Abolin et Popov 8741, 1921); ≡ Elymus macrolepis (Drobow) Tzvelev in Trudy Bot. Inst. Komarova Akad. Nauk SSSR, Rast. Tsentral. Azii 4: 217 (1968). Type. Kazakhstan. Northern Tian Shan, Ketmen Range (holotype LE).

Type.

Kazakhstan (Northern Tian Shan) • Northern slope of the Ketmen Mountains, Kyrgyzsay Gorge, Podgorny settlement , 19 July 1910, A. Michelson s. n. (holotype LE) .

Description.

Stems 50–100 cm, strong, straight, or slightly bent at base. Leaves 3–10 (12) mm wide, usually flat, green, adaxially glabrous or with scattered rather long hairs along slightly prominent ribs. Sheaths either glabrous or hairy. Ligule 1 mm. Spikes, usually green, straight or slightly drooping, often slightly one-sided, 7–16 cm. Spikelets appressed against axis of spike, 7–20 mm. Glumes broadly lanceolate, acute to acuminate. Lemma abaxially densely and evenly covered with fine spines transitioning into hairs; awn 20–40 mm. Palea lanceolate, obtuse, bristly along keels. Anthers 2–4 mm (Fig. 4 ). 2 n = 28 ( Tzvelev and Probatova 2019).

Phenology.

Flowering and fruiting: June-August.

Habitat.

In meadows (floodplains), rocky communities (rocky-gravelly scree, cliffs), and gravel, in the middle, subalpine, and alpine mountain belts, 1100–4200 m.

General distribution.

Russia (Western Siberia, Altai), Afghanistan, Pakistan, China (Kashgar), Western Himalayas, Mongolia, Middle Asia (Tarbagatai, Dzungarian Alatau, Tian Shan, Pamir-Alay: Hissar, Darvaz, and Pamir Mountain ranges): Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan.

Distribution in Uzbekistan.

Surkhandarya and Tashkent regions (Fig. 3 C ). I- 1 Western Tian Shan district. I- 1 - a Ugam-Pskem region. KARZHANTAU RANGE (Syr-Darya region, Tashkent Gorge. The surroundings of Khumsan mountains Kerzhentau in the stones, high, 24. 07. 1922, Simonova 285 [TASH 040946!]); UGAM RANGE (Valley of the Pskem River. Upper reaches of Tepar-say, 17. 08. 1928, Kultiasov 717 [TASH 055306!]); PSKEM RANGE (Valley of the Pskem River, 28. 08. 1928, Kultiasov 904 [TASH 055305!]; River basin Pskem. River valley Oygaing, Description No. 41, 1941, Momotov s. n. [TASH 040968!]; the upper reaches of the river Oygaing. Pass (4200 m) in the upper reaches of the Kzyl – Tor, 19. 08. 1956, Zukerwanik 1515 [TASH 040965!, TASH 040970!]; Bostandyk district, upper reaches of the Barkrak-say gorge. On the southern rocky slope near the GRP base, 3300 m, 08. 08. 1959, Pavlov 19 a [MW 0808635]); MAYDANTAL RANGE (lower reaches of the Ayutor River, h = 2120, 13. 08. 2021, Maltsev s. n. [TASH 131348!]); I- 1 - b Western Chatkal region. CHATKAL RANGE (Mountains Tashkent Alatau. Kizyl-Nura Mountain. The upper reaches of the Parkent-say. Rubble slope, 09. 08. 1953, Mailun, Nabiev 1139 [TASH 040941!]); I- 1 - d Кurama region. KURAMA RANGE (Northern slopes. Upper reaches of the Lyashkarak-say. Subalpine belt. Tugai-sedge vegetation, 06. 08. 1939, Kudryashev 1055 [TASH 040942!]. I- 7 Hissar-Darvaz district. I- 7 - a Sangardak-Tupalang region. HISSAR RANGE (Pamiro-Alay. Choriogul Mountains. Side slope, 7. 08. 1941, Lopotiy, Pinhasov 77 [TASH 040951!]).

Figures

Figure 3. Distribution maps of Elymus species in Uzbekistan A E. caninus B E. lachnophyllus C E. fedtschenkoi D E. longearistatus E E. macrochaetus F E. nevskii G E. praeruptus H E. transhyrcanus I E. tschimganicus J E. tianschanigenus.

Figure 4. Elymus fedtschenkoi a spike b spikelet c glumes d lemmas and paleas e stem f node g ligule (https://doi.org/10.13140/RG.2.2.19171.16163).