An annotated checklist of the genus Tristagma (Amaryllidaceae, Allioideae) Author Arroyo-Leuenberger, Silvia C. Botanischer Garten und Botanisches Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise- Str. 6 - 8, D- 14195 Berlín, Germany. Author Sassone, Agostina B. Instituto de Botánica Darwinion, Labardén 200, Casilla de Correo 22, San Isidro, Buenos Aires, B 1642 HYD, Argentina; text Phytotaxa 2016 2016-09-23 277 1 21 35 http://dx.doi.org/10.11646/phytotaxa.277.1.2 journal article 10.11646/phytotaxa.277.1.2 1179-3163 13652894 7. Tristagma graminifolium (Phil.) Ravenna (1978: 133) Bas.: Steinmannia graminifolia Philippi (1884: 64) ≡ Garaventia graminifolia (Phil.) Looser (1944: 79) ≡ Nothoscordum graminifolium (Phil.) Traub (1968: 49) . Type ( lectotype , designated here):— CHILE . Cerro Renca, 1883/8, F. Philippi s.n . (SGO 000001119!; isolectotype : SGO 000001120!). Notes : — First Traub (1968) treated this species under Nothoscordum , and then Guaglianone (1972) placed it as a doubtful species of Nothoscordum . However, as stated by Ravenna (1978) , Tristagma graminifolium has fused tepals forming a tube and the base chromosome number is 2n = 2x = 8 (metacentric chromosomes), as in the rest of the studied species of Tristagma , whereas in Nothoscordum the basic chromosome number is x = 5 (3 metacentric + 2 acrocentric chromosome pairs) or x = 4 (3 metacentric + 1 acrocentric chromosome pairs) ( Crosa 1981 ). In a preliminary phylogenetic study of Tristagma , this species also resolved as part of Tristagma (A.B. Sassone, L.M. Giussani in prep.). Conservation status : — Endangered (EN), under criterion B1ab(iii) ([a: severely fragmented or Number of locations; b(iii): continuing decline observed of the area, extent and/or quality of habitat)]. The species was found in five hills near Santiago , that are severely fragmented with disturbed vegetation affected by human activity ( Fig. 2A ). Following the proposal made by the Ministerio de Ambiente de Chile this species is considered Vulnerable (VU, http:// www.mma.gob.cl/clasificacionespecies/fichas8proceso/fichas_finales/ Tristagma_graminifolium _P08_propuesta. pdf.). According to Ravenna et al. (1998) , this species also occurs in Valparaiso , for which we do not have records. However, the conservation status proposal includes a photo of a plant which is misidentified—the plant is part of a herbarium sheet of T. graminifolium ( Grandjot 146276 , CONC!).