Galium hypocarpium

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 : 1031

Galium hypocarpium (L.) Endlicher

Fig. 45

Galium hypocarpium (L.) Endlicher, ex Grisebach (1861): 351 — Flora

Argentina (2017); Tropicos (2017).

Relbunium hypocarpium (L.) Hemsley (1881): 63 — Cabrera (1965b):

370.

Valantia hypocarpia L. (1759): 1307

Hemicryptophytes, native with wide distribution in the Southern Cone Region of South Americ; previously recorded in Buenos Aires province but not from mountain range areas. Vulnerable ( Delucchi 2006).

Characteristics. Perennial herb with tetragonal stems and thin, reflexed pubescence. Roots: fibrous, arising from inferior stem nodes. Leaves: oblong, ovateobovate, with apex acute, obtuse, or cuspidate, margin revolute,and pubescence fine. Pseudoverticils formed by 2 leaves and 2 foliar stipules. Flowers: solitarly, placed upon peduncles that are larger than the involucral bracts. Fruit: a red berry.

Comments. This is an infrequent species in the study area. It grows in damp soils, under trees and in grasslands near the summit. It is similar to G. noxium (A. St. Hil.) Dempster ssp. valantioides (Cham. & Schltdl.) Demp- ster, which, however, has white berries.

Order Lamiales : Family Plantaginaceae : Tribe Plantagineae