What is "lagarosiphon"

Lagarosiphon is a genus of aquatic plants described as a genus in 1841. It is native to Africa and Madagascar.

1. Lagarosiphon cordofanus (Hochst.) Casp. - Cameroon + Ethiopia to Namibia + Mpumalanga
2. Lagarosiphon hydrilloides Rendle - Ghana, Kenya, Uganda
3. Lagarosiphon ilicifolius Oberm. - Uganda to Namibia
4. Lagarosiphon madagascariensis Casp. - Madagascar
5. Lagarosiphon major (Ridl.) Moss - Zimbabwe, Botswana, Lesotho, South Africa
6. Lagarosiphon muscoides Harv. - Mali to Sudan to KwaZulu-Natal
7. Lagarosiphon rubellus Ridl. - Angola
8. Lagarosiphon steudneri Casp. - Ethiopia
9. Lagarosiphon verticillifolius Oberm. - Mozambique, Zimibabwe, KwaZulu-Natal, Swaziland, Mpumalanga, Limpopo