Tristagma

Tristagma is a genus of South American plants in the onion subfamily with the Amaryllis family.[3] It is native to South America (Peru, Argentina, Chile and Uruguay) but one of the species (T. uniflorum) has become naturalized in various other places.[1][4]

Species[1]

1. Tristagma ameghinoi (Speg.) Speg. - Mendoza + Santa Cruz Provinces of Argentina
2. Tristagma anemophilum Ravenna - Neuquén Province of Argentina
3. Tristagma atreucoense Ravenna - Neuquén Province of Argentina
4. Tristagma bivalve (Hook. ex Lindl.) Traub - central Chile
5. Tristagma brevipes (Kuntze) Traub - central Chile
6. Tristagma circinatum (Sandwith) Traub - Neuquén Province of Argentina
7. Tristagma fragrans Ravenna - central Chile
8. Tristagma gracile (Phil.) Traub - central Chile
9. Tristagma graminifolium (Phil.) Ravenna - central Chile
10. Tristagma leichtlinii (Baker) Traub - central Chile
11. Tristagma lineatum Ravenna - Santiago Region of Chile
12. Tristagma lomarum Ravenna - Arequipa Region of Peru
13. Tristagma malalhuense Ravenna - Mendoza Province of Argentina
14. Tristagma mirabile Ravenna - Neuquén Province of Argentina
15. Tristagma nahuelhuapinum Ravenna - Rio Negro Province of Argentina
16. Tristagma nivale Poepp. - central + southern Chile, southern Argentina
17. Tristagma patagonicum (Baker) Traub - southern Argentina
18. Tristagma peregrinans Ravenna - Uruguay
19. Tristagma philippii Gand. - central Chile
20. Tristagma poeppigianum (Gay) Traub - central Chile
21. Tristagma porrifolium (Poepp.) Traub - central Chile
22. Tristagma sessile (Phil.) Traub - Chaco Province of Argentina, central Chile, Uruguay
23. Tristagma sociale Ravenna - Mendoza Province of Argentina
24. Tristagma staminosum Ravenna - O'Higgins Region of Chile
25. Tristagma tweedieanum (Baker) Traub - Uruguay, northeastern Argentina
26. Tristagma uniflorum (Lindl.) Traub - Uruguay, eastern Argentina; naturalized in Great Britain, France, Australia, New Zealand, Oregon, California, southeastern United States (from Texas to Maryland)
27. Tristagma yauriense Ravenna - Puno Province of Peru

formerly included[1]

Tristagma
Tristagama patagonicum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Amaryllidaceae
Subfamily:	Allioideae
Tribe:	Gilliesieae
Genus:	Tristagma Poepp.
Type species
Tristagma nivale Poepp.
Synonyms[1]
Gardinia Bertero, not validly published Ipheion Raf. Steinmannia Phil. 1884, illegitimate homonym not Opiz 1852 (Polygonaceae)[2] Garaventia Looser

Several names have been coined using the name Tristagma but referring to species now considered better suited other genera (Beauverdia, Leucocoryne, and Nothoscordum).

• Tristagma dimorphopetalum - Leucocoryne dimorphopetala
• Tristagma felipponei - Beauverdia sellowiana
• Tristagma hirtellum - Beauverdia hirtella
• Tristagma lloydiiflorum - Beauverdia vittata
• Tristagma lorentzii - Beauverdia lorentzii
• Tristagma narcissoides - Leucocoryne coronata
• Tristagma sellowianum - Beauverdia sellowiana
• Tristagma setaceum - Nothoscordum setaceum
• Tristagma subbiflorum - Nothoscordum bivalve
• Tristagma vittatum - Beauverdia vittata

References

1. Kew World Checklist of Selected Plant Families, genus Tristagma
2. The International Plant Names Index, search for Steinmannia
3. Poeppig, Eduard Friedrich. Fragmentum Synopseos Plantarum Phanerogamum 8 (1833).
4. Biota of North America Program 2013 county distribution map

Bibliography

• Sassone, Agostina B.; Giussani, Liliana M.; Guaglianone, Encarnación Rosa (30 April 2013). "Multivariate studies of Ipheion (Amaryllidaceae, Allioideae) and related genera". Plant Systematics and Evolution. 299 (8): 1561–1575. doi:10.1007/s00606-013-0819-5.