Borreria dasycephala (Chamisso & Schlechtendal) Bacigalupo & E.L. Cabral

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 : 1030

Borreria dasycephala (Chamisso & Schlechtendal) Bacigalupo & E.L. Cabral

Figure 43

Borreria dasycephala (Cham. & Schltdl.) Bacigalupo & E.L. Cabral

(1996): 306— Flora Argentina (2017); Tropicos (2017).

Diodia dasycephala Cham. & Schltdl. (1828) : 348— Cabrera (1965b):

351.

Hemicryptophytes, native with wide distribution in the Southern Cone Region of South America; previously recorded in Buenos Aires province but not in mountain range areas.

Characteristics. Perennial, rhizomatous herb with tetragonal stems. Leaves glabrous, with ovate-oblong shape, acute apex and attenuate base. Flowers: terminal or subtermianl, in groups of 1–3 flowers per peduncle; corolla and anthers white. Fruit: 2 mericarps with pubescence at the top.

Comments. This is a very frequent species in the study area. It grows in full sunlight conditions with other short species in deep and moderately deep soils on grassland slopes and at the summit. This species has been described as an annual species ( Flora Argentina 2017) contrary to the specimens seen in the Paititi Reserve, which are hemicryptophyte herbs as previously described by Cabrera (1965b) and Delprete et al. (2005).