Descripcion
Perennial herbs, caespitose, stems prostrate, 10–25 cm, branched, densely leafy at base and more loosely in upper part, whitish-tomentose. Leaves 15–25 × 1.5–4(–5) mm, obovate to linear-obovate, attenuate or slightly attenuate at base, apex acute and shortly acuminate, mucronate; concolorous, whitish-tomentose on both surfaces; trichomes long, eglandular, eseptate, filiform from base to tip. Capitula many, in headlike clusters, subtended by linear leaves, sometimes with 1(or 2) clusters at base. Involucre narrowly campanu late, 3.5–4 × ca. 2 mm. Phyllaries 14 to 20, 4-seriate, lamina light brown at apex; outer phyllaries 2.1–3.5 × 0.9–1.2 mm, ovate, apex subobtuse to acute, lanugi nose at base; inner phyllaries 3.4–4 × 0.5–1 mm, oblong- lanceolate, apex subobtuse, glabrous. Pistillate florets 20 to 40, corolla ca. 3 mm. Bisexual florets 2 to 3, corolla ca. 3.2 mm, 5-lobed, anthers 5. Achenes ca. 0.5 mm, pilose, with short, globose duplex trichomes. Pappus bristles ca. 3.3 mm.
Distribucion y Habitat
Gamochaeta procumbens is known from central and southern Chile (Freire et al., 2016) and is reported here for Argentina. It grows in the Subantarctic and Andean-Patagonian dominions (Cabrera & Willink, 1973) at elevations between 1558 and 2150 m.
Sinónimos
Gamochaeta procumbens (Phil.) Cabrera
Bibliografía
Ejemplares de referencia
| Colector | N° Colect. | Especie | Departamento | Provincia | Imagen |
|---|---|---|---|---|---|
|
|
4356 | Los Ríos | |||
|
|
3648 | Ñuble | Biobío | ||
|
|
-1 | 12 | Ñuble | Biobío |
Nombre Vulgar y Usos
Tipo y Observaciones
Material Tipo: Basónimo: Gnaphalium procumbens Phil.
Observaciones: Recognition. The cluster analysis (Fig. 3A) shows
that Gamochaeta procumbens is grouped with G. alpina,
G. nivalis, and G. serpyllifolia. These species have pros
trate stems and capitula arranged in headlike clusters.
Gamochaeta procumbens is differentiated by its obovate
to linear-obovate leaves, acute and short-acuminate at
the apex (vs. broadly obovate, obtuse to rounded at the
apex in G. alpina, G. nivalis, and G. serpyllifolia).