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This species is accepted, and its native range is Iran.

[KBu]

Pahlevani, A.H. & Rad, M.A. (2019). Two new alpine species of Euphorbia (Euphorbiaceae) from Iran. Kew Bulletin 74: 49. https://doi.org/10.1007/s12225-019-9830-5

Conservation
In spite of several excursions by Iranian botanists to Belgheis Mountain, the species has been collected only twice from the type locality. Belgheis Mountain is a most ancient and species-rich area but with a vulnerable situation in Iran. Due to illegal hunting, overgrazing, overharvesting of medicinal plants and the worst, human disturbance by heavy, giant machines for exploiting zinc and lead which has already occurred in the region for a long time, both fauna and flora are threatened especially those local endemic taxa with high risk status. Based on conservation analysis and IUCN threat categories, its rarity as well as fragile habitat, its conservation status is assessed as ‘critically endangered’ (CR B2a, b i, ii, iii) with less than 10 km2of EOO and 8 km2 of AOO (IUCN 2017).
Distribution
Asia: Iran.
Ecology
Collected in the alpine zone on dry rocky ground at an elevation between 3100 – 3300 m on the peak of Belgheis Mountain (north-west Iran), along with several alpine species including, Allium mahneshanense Razifard, Zarre & R.M.Fritsch, Hypericum scabrum L., Astragalus supervisus E.Sheld., Clastopus erubescens Hausskn., Lamium album L, Scutellaria pinnatifida A.Ham., Silene tenella C.A.Mey., Silene gynodioica Ghaz., Sedum album L., Trisetum flavescens (L.) P.Beauv., Phleum alpinum L., Jurinea meda Bornm., Tanacetum kotschyi (Boiss.) Grierson and Piptatherum laterale (Regel) Roshev. subsp. laterale.
Ray
Terminal rays 1 – 2, not dichotomous; with no axillary rays
Morphology General Habit
Perennial, caespitose, somewhat spinescent and pubescent herbs, 7 – 12 cm high
Morphology Leaves
Cauline leaves sessile, lanceolate to linear-lanceolate, 9 – 12 × 2 – 5 mm, cuneate to attenuate at the base, denticulate and cartilaginous at margin, mucronate at apex, glaucous, puberulous especially abaxially and on margin, no prominent nerves to only midrib visible Raylet-leaves 2, similar to the ray-leaves but smaller Ray-leaves 2 – 4 (5), sessile, ovate to ovate-lanceolate, 6 – 9 × 3.5 – 5 mm, truncate to rounded at the base, denticulate and cartilaginous at margin, mucronate at apex, glabrous to sparsely pilose
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary smooth, glabrous to sparsely pilose, style free at the base, 1 mm long, stigma 6, bifid
Morphology Reproductive morphology Fruits
Capsules smooth, conical, shallowly trilobate, 3 – 4 × 3 – 3.8 mm, glabrous or very sparsely pilose, pedicels 2.5 – 3 mm long
Morphology Reproductive morphology Inflorescences Bracts Involucre
Cyathial involucre campanulate, 1.5 – 2 mm in diam., internally pilose and externally glabrous; lobes ovate to ovate-lanceolate and praemorse, glands 4, gland appendages oblong and truncate, with two rather short horns, brownish
Morphology Reproductive morphology Seeds
Seeds conical, irregularly pitted, 2.2 – 2.5 × 1.6 – 1.8 mm, grayish, caruncle conical, 0.5 – 0.7 × 0.7 – 0.8 mm, ochraceous.
Note
Most closely related to Euphorbia sahendi Bornm., but differing by the thorny branching system after drying (vs not thorny in E. sahendi), smaller cauline leaves (9 – 12 × 2 – 5 mm instead of 16 – 30 × 8 – 18 mm), leaves without prominent veins or only obscure midrib (vs 3 conspicuous palmate nerves), terminal rays 1 (– 2) (vs (3 –) 5), glabrous or rarely very sparsely pilose (vs completely puberulent) and smaller (3 – 4 × 3 – 3.8 mm instead of 4.5 – 5.3 × 4.2 – 5 mm) capsules. The newly discovered species belongs to sect. Pithyusa and issister to Euphorbia sahendi (unpublished data). Euphorbia belgheisi is limitedto the type locality (NW Iran, frontier of Zanjan and West AzarbaijanProvinces). The epithet ‘belgheisi’ refers to the mountain Belgheis in Zanjan province (NW Iran), where the species occurs.
Phenology
Flowering specimens found from June to July. Fruiting specimens found from July to Aug.
Type
Iran, Zanjan, Dandi to Takab, Anguran mine, Belgheis Mt, 3130 – 3331 m, 36°39'N, 47°18'E, 6 July 2012, Amini Rad & Torabi 59245 (holotype IRAN!).

Native to:

Iran

Euphorbia belgheisi Pahlevani appears in other Kew resources:

First published in Kew Bull. 74(3)-49: 2 (2019)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0