Elymus longe-aristatus (Boiss.) 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

4. Elymus longe-aristatus (Boiss.) Tzvelev in Novosti Sist. Vyssh. Rast. 9: 62 (1972)

≡ Agropyron longearistatum (Boiss.) Boiss. in Fl. Orient. 5: 660 (1884). ≡ Anthosachne longearistata (Boiss.) Nevski in Trudy Sredne-Aziatsk. Gosud. Univ., Ser. 8 b, Bot. 17: 64 (1934). ≡ Brachypodium longe-aristatum Boiss. in Diagn. Pl. Or., ser. 1, 7: 127 (1846). ≡ Roegneria longearistata (Boiss.) Drobow in Fl. Uzbekistan. 1: 280 (1941).

= Agropyron flexuosissimum Nevski in Izv. Bot. Sada Akad. Nauk S. S. S. R. 30: 510 (1931 publ. 1932). Type. Tajikistan. Karategin, Galagan Glacier, 10,000 ft, 07 July 1896, V. I. Lipsky 2497 (holotype LE, isotype: LE). ≡ Elymus longearistatus subsp. flexuosissimus (Nevski) Tzvelev in Novosti Sist. Vyssh. Rast. 10: 26 (1973).

= Agropyron longiaristatum var. aitchisonii Boiss. , Fl. Orient. 5: 660 (1884). Type. AFGHANISTAN. Hab. ad Sergal et Sikaram vallis Kurum Affghaniae 10000 ’ – 14000 ’. Date unknown, Aitch. 962.

= Brachypodium tataricum Munro ex Aitch. in J. Linn. Soc., Bot. 18: 109 (1880), nom. nud.

= Agropyron canaliculatum Nevski in Izv. Bot. Sada Akad. Nauk S. S. S. R. 30: 509 (1932). Type. Tajikistan. Darvaz, Peter I range, southern slope. Vereshkay Glacier, 11,000 ft, 29 July 1899, V. I. Lipsky 2500. ≡ Elymus longearistatus subsp. canaliculatus (Nevski) Tzvelev in Novosti Sist. Vyssh. Rast. 9: 62 (1972). ≡ Elymus canaliculatus (Nevski) Tzvelev in Trudy Bot. Inst. Komarova Akad. Nauk SSSR, Rast. Tsentral. Azii 4: 220 (1968).

= Roegneria nevskiana E. Nikit. ex Zakirov in Trudy Uzbeks. Gosud. Univ. Alishera Navoi. N. S., Biol. 89: 19 (1958), nom. nud. Type. Uzbekistan. Upper Zeravshan: Saridervaza, 3500 m, 14 September 1945, Zakirov.

Lectotype

(designated by Tzvelev 1972: 62). Iran • Hab. in m. Totschal pr. Teheran, 23 VIII 1843, Pl. Pers. Bor. n ° 569, Th. Kotschy.

Description.

Stems 30–70 cm, glabrous and smooth. Leaves folded lengthwise, glabrous, adaxially rough, abaxially smooth or occasionally hairy. Sheaths glabrous, smooth. Ligule short. Spikes drooping, with 3–7 spikelets. Spikelets solitary along axis of spike. Internodes of spikelet noticeably elongate. Glumes linear-lanceolate, apex acute or with awn to 5 (7) mm. Awn of lemma bent to side, 35–60 (70) mm. Palea linear, usually slightly shorter than lemma, ciliate along ridges. Anthers 4–6 (7) mm (Fig. 6 ).

Phenology.

Flowering and fruiting: July-August.

Habitat.

Middle, subalpine, and alpine belts of mountains; petrophytic communities (rocky areas, landslides, gravelly landslides, rocky-gravelly landslides, cliffs), 1200–2900 m.

General distribution.

Iran, Iraq, Afghanistan, Pakistan, Western Himalayas, Tibet, Nepal, Middle Asia (Hisor, Peter I, Darvoz, Kuhitang mountain ranges): Tajikistan, Turkmenistan, Uzbekistan.

Distribution in Uzbekistan.

Kashkadarya and Surkhandarya regions (Fig. 3 D ). I- 6 Western Hissar district. I- 6 - a Kashkadarya region. HISSAR RANGE (Hazret-Sultan Mountain. Rocky slope of the Ak-su River valley. Altitude 2700 m, 17. 07. 1933, Gordienko, Chilikina 214 [MW 0808634]; Western Pamir-Alay. Upper reaches of the Yakkabag-Darya River. Around the village of Tash-Kurgan. Mountain Maskara. Limestone scree, 14. 07. 1936, Butkov Bochantsev 937 [TASH 040995!]); I- 6 - c Baysun region. HISSAR RANGE (Ketmen-Chapty Mountain, rocky slope, near the Gasa pass, 2800 m, 20. 07. 1935, Gordienko 22 [MW 0808631]); I- 6 - d Kuhitang region. KUHITANG RANGE (Montes meridionales: Sogdiano-transoxani: In detritu calcareo submobili in montibus Kuhitang supra p. Kizyl-alma, 28. 06. 1927, Vvedensky, Popov [TASH 046135!]; Pamir-Alay Mountains, Kempir-Tyube, 15. 07. 1935, Pryanishnikov 42 [MW 0808633]; Kugitang-Tau. Machaily (Machaily-say) juniper forest, 2200 m, 11. 05. 1985, Khasanov s. n. [TASH 126638!, TASH 126639!].

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 6. Elymus longearistatus a spike b spikelet c glumes d lemmas and paleas e stem f node g ligule. (https://doi.org/10.13140/RG.2.2.29237.49127)