Sphaerocoma

Sphaerocoma is a monotypic genus of flowering plants belonging to the family Caryophyllaceae. The only species is Sphaerocoma hookeri.
Its native range is Egypt to Northeastern Tropical Africa, Sinai Peninsula, Arabian Peninsula, southern Iran, and southwestern Pakistan.

Subspecies

Two subspecies are recognized:

Sphaerocoma hookeri subsp. aucheri Kool & Thulin – Arabian Peninsula, southern Iran, and southwestern Pakistan
Sphaerocoma hookeri subsp. hookeri – Egypt, Eritrea, Sinai, Socotra, Somalia, Sudan, and Yemen

Ecology

In the South Iran Nubo–Sindian desert and semi-desert ecoregion of southern Iran and southwestern Pakistan, Sphaerocoma hookeri subsp. aucheri in association with Euphorbia larica forms one of the ecoregion's typical plant communities.