defined the subtribe Disinae as consisting of Pachites, Disa and Huttonaea. This version of Disinae is probably not monophyletic, but was created as a holding classification, to avoid the unnecessary designation of subtribes before further studies can clarify the relationships of these three genera. Seeds The genus can be split into two groups based on the size of the seeds. Those with relatively large balloon-shaped seeds up to 1.5 mm long belong to the Disa uniflora group. The remaining species have seeds that are smaller than 0.7 mm. The Disa uniflora group comprises plants that grow along stream sides: Disa uniflora, Disa tripetaloides, Disa cardinalis, Disa caulescens and Disa aurata. They belong to the few species in Orchidaceae that do not rely on mycorrhizal fungi for germination, and are thought to be an adaptation to hydrochory. This pattern was later extended to split the genus into summer rainfall species and non-summer rainfall species. Those in the second group added Disa cornuta to the list of Disa seeds that germinate readily. Horticulture The species Disa uniflora is well known as an ornamental. It is a spectacular red orchid known as "The Pride of Table Mountain." Other commonly cultivated species include Disa aurata, Disa cardinalis, Disa crassicornis, Disa racemosa, Disa sagittalis, and Disa tripetaloides. Some of the species are grown only in African gardens. Once very rare in cultivation, Disa uniflora is gaining in popularity as a cut flower. However, they are difficult to grow, because of the needed mineral composition of the potting soil. Also, if exposed to excessive moisture, they can be easily killed by rot. Hybrids The following species have been used to create more than 400 hybrids : Disa cardinalis, Disa caulescens, Disa racemosa, Disa tripetaloides, Disa uniflora, Disa aurata and Disa venosa. Disa × brendae (D. caulescens × D. uniflora) (South Africa, SW. Cape Prov.) Disa × maculomarronina (D. hircicornis × D. versicolor) (S. Africa).. Disa × nuwebergensis (D. caulescens × D. tripetaloides) (South Africa, Cape Prov.). Disa × paludicola (D. chrysostachya × D. rhodantha) (South Africa, KwaZulu-Natal). Species Species currently (May 2014) recognized: Disa aconitoides (Ethiopia to S. Africa) Disa aconitoides subsp. aconitoides (Ethiopia to S. Africa) Tuber geophyte Disa aconitoides subsp. concinna (Congo to S. Trop. Africa) Tuber geophyte Disa aconitoides subsp. goetzeana (Ethiopia to Tanzania) Tuber geophyte Disa aequiloba (SW. Tanzania to Angola) Disa alinae (Congo) Disa alticola (Mpumalanga / East-Transvaal) Disa amoena (