Vicia linearifolia Hooker & Arnott

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 : 1021

Vicia linearifolia Hooker & Arnott

Figure 22 Vicia linearifolia Hooker & Arnott (1830) : 20— Cabrera (1967): 588;

Flora Argentina (2017).

Therophytes, native with distribution in the Southern Cone Region of South America; previously recorded from Buenos Aires province but not from mountainous areas.

Characteristics. Annual, delicate, twining herb,

20–40 cm tall, glabrous, with narrow, angular stems. Leaves pubescent, pinnately compound, with 3–5 linear to filiform pairs of leaflets, 0.2–3 mm wide; with a termi- nal, simple tendril, split into 1–3 segments; petiole short or even absent; stipules semi-sagittate, with a spur. Flowers solitary in axils of stems, exceptionally in a terminal, 2-flowered cyme; corollas pale blue to blue. Fruit: an erect or pendent, pubescent, brown legume.

Comments. This is an infrequent species in the study area. It grows in shady sites under trees in damp soils on slopes. It differs from other Vicia species by the presence of solitary flowers (exceptionally 2) that are up to 4 mm long.