Hans Peter Linder

Disa virginalis is a species of orchid found in Southwest Cape Province, South Africa.

Disa cardinalis is a species of orchid found in South Africa (S. Cape Prov. - Riversdale).

Evotella is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Evotella rubiginosa, endemic to South Africa.

Disa intermedia is a species of orchid (family Orchidaceae), native to Eswatini, formally Swaziland. Mining operations are a threat to D. intermedia which is protected and grows exclusively in the Ngwenya Mine region (the world's oldest mine). Among many environmental issues, the mining operations have led to heavy pollution of the water sources that feed the nearby city of Mbabane. Cases of corruption to get the mining license were reported, including a $28 million donation to the king Mswati III by Salgaocar Swaziland Limited Company. The deal established a 25% ownership of the mine for the

Disa alticola is a perennial plant and geophyte belonging to the genus Disa. The species is endemic to Mpumalanga and occurs on the Steenkampsberg and the Long Tom Pass. The plant is threatened by overgrazing and trampling by livestock.

Austroderia is a genus of five species of tall grasses native to New Zealand, commonly known as toetoe (from Māori). The species are A. toetoe, A. fulvida, A. splendens, A. richardii and A. turbaria. They were recently reclassified in 2011 from the genus Cortaderia. Two closely related South American species are Cortaderia jubata and C. selloana (pampas grass), which have been introduced to New Zealand and are often mistaken for toetoe. These introduced species tend to take over from the native toetoe and are regarded as invasive weeds.

Platycaulos is a group of plants in the Restionaceae described as a genus in 1984. The genus is native to eastern and southern Africa including Madagascar.

Nevillea is a group of plants in the Restionaceae described as a genus in 1984. The entire genus is endemic to Cape Province in South Africa. Species Nevillea obtusissimus (Steud.) H.P.Linder Nevillea singularis Esterh. Nevillea vlokii H.P.Linder

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Disa aristata is a perennial plant and geophyte belonging to the genus Disa. The plant is endemic to Limpopo and occurs in the Wolkberg. It has an area of occurrence of less than 25 km2 (9.7 sq mi). The plant grows on mountain slopes and is surrounded by pine tree plantations. Although the pine trees are not planted on mountain slopes, the seeds spread to the slopes and become a threat to the plant.

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Austroderia richardii, syn. Cortaderia richardii, is a species of flowering plant in the family Poaceae. It is an evergreen perennial grass. The genus Austroderia is often confused with "pampas grass", which usually refers to Cortaderia selloana. "Early pampas-grass" is a more specific name. The name "tussock grass" may also be found. The Māori name is "toetoe". It is one of five species commonly called toetoe in the genus Austroderia that are endemic to New Zealand. It occurs in the South Island and possibly also in the North Island. It is also an introduced species in Tasmania, Australia.

Thamnochortus cinereus is a species of grass-like restio of the family Restionaceae. It grows in the fynbos region in South Africa. It is known as the silver reed in English and Silverriet in Afrikaans.

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Hydrophilus is a group of plants in the Restionaceae described as a genus in 1984. There is only one known species, Hydrophilus rattrayi, endemic to Cape Province in South Africa.

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Disa zimbabweensis is a perennial plant and geophyte belonging to the genus Disa. In South Africa, the plant is native to Mpumalanga. Outside South Africa, the plant is native to Mozambique and Zimbabwe.

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Disa nyikensis is a perennial plant and geophyte belonging to the genus Disa. The plant is native to Malawi, Tanzania and Zambia.

Disa nivea is a perennial plant and geophyte belonging to the genus Disa and is part of the fynbos. The plant is native to KwaZulu-Natal, Lesotho and the Eastern Cape and occurs in the Drakensberg.

Disa karooica is a perennial plant and geophyte belonging to the genus Disa and is part of the fynbos and renosterveld. The plant is endemic to the Northern Cape and is found in Namaqualand and on the Roggeveld plateau. There are also isolated populations at Springbok, Kamiesberge and Sutherland. The species is considered rare and is threatened by overgrazing and crop cultivation in the Kamiesberg area.

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Disa chimanimaniensis is a perennial plant and geophyte belonging to the genus Disa. The plant is native to Mozambique and Zimbabwe and occurs in the Chimanimani Mountains.