Pteropyrum

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Polygonaceae
Subfamilia: Polygonoideae
Tribus: Calligoneae
Genus: Pteropyrum
Species: P. aucheri – P. naufelum – P. olivieri
Name

Pteropyrum Jaub. & Spach, Ill. Pl. Orient. 2(11): 7, tt. 107–109 (1844).

Type species: Pteropyrum aucheri Jaub. & Spach

References
Primary references

Jaubert, H.F. & Spach, E. 1844–1846. Illustrationes Plantarum Orientalium. Vol. 2. 123 pp, pl. 101–200. Parisiis: apud Roret Bibliopolam. Hathitrust Reference page.

Additional references

Tavakkoli, S., Kazempour Osaloo, S. & Maassoumi, A.A. 2010. The phylogeny of Calligonum and Pteropyrum (Polygonaceae) based on nuclear ribosomal DNA ITS and chloroplast trnL-F sequences. Iranian Journal of Biotechnology 8(1): 7-15. Full text HTML Reference page.

Links

International Plant Names Index. 2017. Pteropyrum. Published online. Accessed: Mar. 11 2017.
Tropicos.org 2017. Pteropyrum. Missouri Botanical Garden. Published on the internet. Accessed: 2017 Mar. 11.

Pteropyrum is a genus of plants in the family Polygonaceae. Plants of the World Online accepts two species, native to Iran, Oman and the Gulf States.[1]

Description

Species of Pteropyrum are shrubs. The few leaves may be arranged alternately or in bundles (fascicled). The ochrea is short. The flowers are small and bisexual, with five tepals, two outer and three inner, the three inner clasping the fruit when it forms. There are eight stamens. The ovary is three-angled with three styles. The fruit has three broad wings.[2]
Taxonomy

The genus was erected by Hippolyte François Jaubert and Édouard Spach in 1844.[3] It is placed in the subfamily Polygonoideae, tribe Calligoneae, along with its sister genus Calligonum.[4]
Species

As of March 2019, sources varied considerably in the number of species assigned to the genus. Plants of the World Online accepted the following two species:[1]

Pteropyrum aucheri Jaub. & Spach (synonym Pteropyrum ericoides Boiss.[5])
Pteropyrum scoparium Jaub. & Spach

Other sources listed more species, some with an "unresolved" status.[6][7] These include:

Pteropyrum olivierii Jaub. & Spach (synonyms Pteropyrum gracile Boiss., Pteropyrum griffithii Meisn.[8])[2]
Pteropyrum naufelum Al-Khayat[9]

References

"Pteropyrum Jaub. & Spach", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-03-09
Qaiser, M., "Pteropyrum", Flora of Pakistan (online), Missouri Botanical Garden, retrieved 2019-03-17
"Plant Name Details for Pteropyrum Jaub. & Spach", The International Plant Names Index, retrieved 2019-03-09
Schuster, Tanja M.; Reveal, James L.; Bayly, Michael J. & Kron, Kathleen A. (2015), "An updated molecular phylogeny of Polygonoideae (Polygonaceae): Relationships of Oxygonum, Pteroxygonum, and Rumex, and a new circumscription of Koenigia", Taxon, 64 (6): 1188–1208, doi:10.12705/646.5
"Species Details: Pteropyrum aucheri Jaub. & Spach", Catalogue of Life: 2018 Annual Checklist, retrieved 2019-03-17
"Search results for Pteropyrum", The Plant List, retrieved 2019-03-17
"Search for Pteropyrum", Tropicos, Missouri Botanical Garden, retrieved 2019-03-17
"Species Details: Pteropyrum olivieri Jaub. & Spach", Catalogue of Life: 2018 Annual Checklist, retrieved 2019-03-17
Tavakkoli, Solmaz; Kazempour Osaloo, Shahrokh & Maassoumi, Ali Asghar (2010), "The Phylogeny of Calligonum and Pteropyrum (Polygonaceae) Based on Nuclear Ribosomal DNA ITS and Chloroplast trnL-F Sequences", Iranian Journal of Biotechnology, 8 (1): 7–15, retrieved 2019-03-18