Galium pierredmondii Blanca, Cueto, J. Fuentes & Ortega Oliv.

Perennial, suffruticose, pale-greenish. Stems 12–50 cm, generally ascendant to erect, with erect-patent branches; middle internodes 8–40 mm, subequal to three times larger than the leaves, shortly tomentulose or tomentose, with hairs up to 0.5 mm long. Leaves 7–13(20) × 0.7–1(1.3) mm, erect-patent or patent, the lower generally reflexed, linear, with a 0.7–1 mm apical mucro, with revolute margins, single-veined; the adaxial surface green, strongly scabrid, with prickles up to 0.3(0.4) mm long, ± homogeneous, and abaxial surface grey to white- tomentose. Inflorescence 5–35 cm, cylindrical, dense, rarely paniculiform and then narrowly pyramidal, with erect- patent and alternate and/or opposite branches, axis tomentulose or tomentose; the primary internodes of the lateral branches up to 30 mm long; flowers arranged in glomerular cymes, sessile or subsessile. Bracteoles longer than the ovary, ovate-lanceolate, adaxial surface scabrid and abaxial one tomentose. Flowers hermaphrodite, sessile, with scent unpleasant of putrid potatoes. Corolla 3.5–4.8 mm long, infundibuliform, clearly widened in the upper third, glabrous to sparsely hirsute, uniformly yellow; tube 2.5–3 mm and lobes 1.5–1.8 mm (1/3 of the total length), patent at anthesis, triangular-lanceolate, with an apiculum up to 0.4 mm, incurved. Stamens with anthers 0.7–0.8(0.9) mm, oblongoid, yellow; filaments 0.3–0.4 mm, smaller than the anthers, exerted. Ovary oblongoid, white-hirsute, with hairs 0.3–0.5 mm; style up to 3.5 mm, from just over half to equalling in length the corolla tube at anthesis, and stigmas globose or oblongoid. Mericarps 1.7–2.2 mm, globose, brownish to blackish, densely or laxly hirsute, with hairs 0.4–0.7 mm