Rudolf Wagner

Polycarpaea paulayana is a species of plant in the family Caryophyllaceae. It is endemic to northern Socotra and Samhah in Yemen's Socotra Archipelago. Its natural habitat is subtropical or tropical dry shrubland.

Polycarpaea kuriensis is a species of plant in the family Caryophyllaceae. It is endemic to the islands of Socotra, Samhah, and Abd al Kuri in Yemen's Socotra Archipelago. Its natural habitats are subtropical or tropical dry shrubland and rocky areas.

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Gunniopsis kochii, commonly known as the Koch's pigface, is a succulent plant in the iceplant family, Aizoaceae. It is endemic to Australia. The sparsely branching annual herb covered in papillose typically grows to a height of 20 centimetres (8 in). It has fleshy grey-green leaves that are ovate to oblanceolate in shape. Leaves are up to 30 mm (1.18 in) long and 11 mm (0.43 in). It blooms between September and October producing solitary purple and pink flowers. The plant is found in stony areas like gibber plains. It is distributed through central parts of South Australia. The species was

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