Sisyrinchium sp.

Echeverría, María L., Alonso, Sara I. & Comparatore, Viviana M., 2017, Survey of the vascular plants of Sierra Chica, the untouched area of the Paititi Natural Reserve (southeastern Tandilia mountain range, Buenos Aires province, Argentina), Check List 13 (6), pp. 1003-1036 : 1017

Sisyrinchium sp.

Figure 10

Cryptophyte, native.

Characteristics. Perennial herb, 30–50 cm tall. Roots fleshy. Basal leaves numerous, erect, parallel-veined, sharply folded along their midribs, 20–27 cm long. Peduncle winged, with a multiflorous cyme (rhipidium); flowers white to pale yellow, with violet nerves and yel- low spots at base, surrounded by purplish tinge; tepals with emarginate-apiculate apex. Filaments entirely connate into a glabrous column; base of the filaments coverd with yellow glands. Fruit: a globose or obovate capsule.

Comments. This is a frequent species in the study area. It grows in full sunlight conditions and shallow to moderately deep soils on rocky and grassy slopes. The specimens of the Paititi Reserve have fleshy roots and their filaments are grouped forming a column. The base of this column is covered with glands so it would correspond to Sisyrinchium platense I.M. Johnst. or S. pachyrhizum Baker ( Cabrera 1968, Roitman and Hurrell 2009). However, in S. platense the tepals are violet to pale blue, and in S. pachyrhizum they are vivid yellow with brown spots. As neither of the described species for Buenos Aires province present tepals with the colors seen in our specimens, we have not identified our material to species.

Order Asparagales : Family Orchidaceae : Tribe Chloraeeae