Aegilops cylindricaHost

jointed goatgrass

WFO wfo-0000841654 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Aegilops cylindrica, photographed by Petra Caltová
fig. a Petra Caltová, CC BY 4.0 / 2022-05-21 / obs. 199591088
Aegilops cylindrica, photographed by Pavel Kacl
fig. b Pavel Kacl, CC BY 4.0 / obs. 199557231
Aegilops cylindrica, photographed by Cleveland Powell
fig. c Cleveland Powell, CC BY 4.0 / obs. 124325279
Aegilops cylindrica, photographed by Сергей Крыленко
fig. d Сергей Крыленко, CC BY 4.0 / obs. 76141591
Aegilops cylindrica, photographed by Сергей Крыленко
fig. e Сергей Крыленко, CC BY 4.0 / obs. 73623288
Aegilops cylindrica, photographed by Sam Kieschnick
fig. f Sam Kieschnick, CC BY 4.0 / obs. 18284794
Aegilops cylindrica, photographed by Sam Kieschnick
fig. g Sam Kieschnick, CC BY 4.0 / obs. 15252254
Aegilops cylindrica, photographed by Sam Kieschnick
fig. h Sam Kieschnick, CC BY 4.0 / obs. 7314926

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 26 botanical countries

Regions where Aegilops cylindrica is native: Afghanistan, Iran, Iraq, Japan, Kazakhstan, Kirgizstan, Lebanon-Syria, North Caucasus, Palestine, Tadzhikistan, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Pakistan, Bulgaria, Czechia-Slovakia, Greece, Hungary, Krym, Northwest European Russia, NW. Balkan Pen., Romania, South European Russia, Türkiye-in-Europe, Ukraine AfghanistanIranIraqJapanKazakhstanKirgizstanLebanon-SyriaNorth CaucasusPalestineTadzhikistanTranscaucasusTürkiyeTurkmenistanUzbekistanPakistanBulgariaCzechia-SlovakiaGreeceHungaryKrymNorthwest European RussiaNW. Balkan Pen.RomaniaSouth European RussiaTürkiye-in-EuropeUkraine
Native distribution of Aegilops cylindrica, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Afghanistan AFG ASIA-TEMPERATE
Iran IRN
Iraq IRQ
Japan JAP
Kazakhstan KAZ
Kirgizstan KGZ
Lebanon-Syria LBS
North Caucasus NCS
Palestine PAL
Tadzhikistan TZK
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Bulgaria BUL EUROPE
Czechia-Slovakia CZE
Greece GRC
Hungary HUN
Krym KRY
Northwest European Russia RUW
NW. Balkan Pen. YUG
Romania ROM
South European Russia RUS
Türkiye-in-Europe TUE
Ukraine UKR
Pakistan PAK ASIA-TROPICAL

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 1,224 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -9.2 °C -4.0 °C 4.0 °C
Warmest month, mean daily high 25.0 °C 28.0 °C 34.7 °C
Annual rainfall 347 mm 587 mm 1,070 mm
Rainfall in the driest quarter 30 mm 104 mm 193 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,224 research-grade observations of Aegilops cylindrica that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 42 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Aegilops caudata subsp. cylindrica (Host) Hegi
  • Aegilops caudata var. cylindrica Fiori
  • Aegilops caudata var. hirsuta Hegi
  • Aegilops cylindrica f. brunnea (Popova) K.Hammer
  • Aegilops cylindrica f. brunusica van Slageren & Eldarov
  • Aegilops cylindrica f. ferruginea (Popova) K.Hammer
  • Aegilops cylindrica f. fuliginosa (Popova) K.Hammer
  • Aegilops cylindrica f. gahvayii Aminov & Eldarov
  • Aegilops cylindrica f. garamtil Aminov & Eldarov
  • Aegilops cylindrica f. prokhanovii (Tzvelev) K.Hammer
  • Aegilops cylindrica f. pullusica van Slageren & Eldarov
  • Aegilops cylindrica f. rubiginosa (Popova) K.Hammer
  • Aegilops cylindrica subsp. aristulata Zhuk.
  • Aegilops cylindrica subsp. pauciaristata (Eig) Chennav.
  • Aegilops cylindrica unranked pubescens Kloos
  • Aegilops cylindrica var. albescens Popova
  • Aegilops cylindrica var. aristulata (Zhuk.) Tzvelev
  • Aegilops cylindrica var. brunnea Popova
  • Aegilops cylindrica var. ferruginea Popova
  • Aegilops cylindrica var. flavescens Popova
  • Aegilops cylindrica var. fuliginosa Popova
  • Aegilops cylindrica var. gobustanica van Slageren & Eldarov
  • Aegilops cylindrica var. hirsuta (Hegi) Hegi
  • Aegilops cylindrica var. kastorianum Karat.

and 18 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.