Distribución y hábitat
Gamochaeta valparadisea is endemic to central Chile (Freire et al., 2016) in the Andean-Patagonian dominion (Cabrera & Willink, 1973), where it grows at elevations from sea level to 500 m in shrub steppe.
Flora del Cono Sur · Ficha del taxón
Perennial herbs, 10–15 cm tall, multi-stemmed, stems ascending, simple or branched at upper part, uniformly leafy, densely whitish-woolly. Leaves 12–20 × 6–8 mm, broadly obovate, attenuate at base, apex rounded to obtuse, mucronate, margins flat; concolor ous, with adpressed, white tomentum on both surfaces; trichomes long, eglandular, eseptate, with basal cells expanded; cauline leaves gradually diminishing in size upward. Capitula many, in clusters in axils of upper leaves, arranged in continuous, elongated spikes, in- terrupted at base. Involucre narrowly campanulate, 4–5 × 2.5–3 mm. Phyllaries 3- or 4-seriate, lamina reddish to purple at apex; outer phyllaries 3–3.5 × ca. 1.5 mm, ovate, apex acute-acuminate, lanuginose; inner phyllar ies 4.3–5 × 0.5–0.8 mm, oblong, apex acute, glabrous. Pistillate florets ca. 50, corolla ca. 2.5 mm. Bisexual florets ca. 4, corolla ca. 2.5 mm, 5-lobed, anthers 5. Achenes ca. 0.5 mm, pilose, with short, globose duplex trichomes. Pappus bristles ca. 3 mm.
Basónimo: Gnaphalium valparadiseum Phil.
Gamochaeta valparadisea is endemic to central Chile (Freire et al., 2016) in the Andean-Patagonian dominion (Cabrera & Willink, 1973), where it grows at elevations from sea level to 500 m in shrub steppe.
El nombre aceptado actualmente para la Flora del Cono Sur es Gamochaeta valparadisea .
Referencia bibliográfica:
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| Phil. | 1858 | Linnaea 29 · 5 |
Gnaphalium valparadiseum
Sinónimo registrado de Gamochaeta valparadisea .
Chile. Valparaíso, Nov. 1854, Germain s.n. (holotype, SGO-064505!; isotype, LP-002551!*).
Freire, S. E., Salomón, L., Bayón, N. D., Baeza, C. M., Muñoz-Schick, M. & Migoya, M. A. (2016). Taxonomic revision of the genus Gamochaeta Wedd. (Gnaphalieae, Asteraceae) in Chile. Gayana, instituto central de biología. Botánica., 73(2), 292-345.
Freire, S. E. & Iharlegui, L. (1997). Sinopsis preliminar del género Gamochaeta (Asteraceae, Gnaphalieae). Boletín de la Sociedad Argentina de Botánica, 33, 23-35.
Anderberg, A. A. (1991). Taxonomy and phylogeny of the tribe Gnaphalieae (Asteraceae). Opera Botanica a societate Botanice Lundensi. Lund, Copenhagen, 104, 1-95.
Chile · Valparaíso · Completar datos
Registros de herbario determinados actualmente con este nombre.
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| -1 250 | Chile | Valparaíso | Completar datos |
Sin datos de conservación registrados en Flora Vascular Argentina.
Fuente: Flora Vascular Argentina.
Recognition. The cluster analysis (Fig. 3A) shows that Gamochaeta valparadisea is nested within sub group B2. All species in this subgroup are multi stemmed plants usually with concolorous leaves, but G. valparadisea is distinguished by its cauline leaves broad-obovate and capitula in continuous spikes only interrupted at the base.