Flora del Cono Sur · Ficha del taxón
Perennial herbs, 20–50 cm tall, multi-stemmed, stems erect, simple, densely leafy at base and more loosely in upper part, grayish-woolly, with basal ro sette of leaves persisting at flowering. Leaves 15–50 × 5–18 mm, broadly obovate, long-attenuate at base, apex rounded, mucronate, margins flat; concolorous to slightly discolorous, grayish-woolly above and densely grayish-woolly below; trichomes long, eglandular, es eptate, filiform from base to tip; cauline leaves gradu ally diminishing in size upward. Capitula many, in clusters in axils of upper leaves, arranged in discontin uous, elongated spikes. Involucre narrowly campanu late, 3–3.5 × 2–2.5 mm. Phyllaries 4- or 5-seriate, lamina stramineous; outer phyllaries 2.6–3 × ca. 1.2 mm, ovate-lanceolate, apex acuminate, lanuginose; inner phyllaries 3–3.5 × 0.7–0.8 mm, oblanceolate, apex acute, glabrous. Pistillate florets ca. 70, corolla 1.8–2.2 mm. Bisexual florets 2 to 4, corolla 2–2.2 mm, 5-lobed, anthers 5. Achenes ca. 0.4 mm, pilose, with short, glo bose duplex trichomes. Pappus bristles ca. 2.2 mm.
Brazil. Rio Grande do Sul: Bagé, próximo a ponte do rio Camaquã, na divisa com Caçapava do Sul, 2 Nov. 2003, L. P. Deble & A. S. de Oliveira 6350 (holotype, SI-000869!*; isotypes, CTES-0013907!, LP-001887!).
Gamochaeta erecta occurs in southern Brazil (Deble et al., 2006) in the Chacoan dominion (Cabrera & Willink, 1973), where it grows in wet, rocky habitats. Deble (2019) also reported G. erecta for Uruguay without citing specimens.
Deble, L. P., Marchiori, J. N. C. & Oliveira, A. S. (2006). Cinco novas espécies brasileiras do gênero Gamochaeta Weddel (Asteraceae-Gnaphalieae). Balduinia, 6, 14-24.
Brasil · Rio Grande do Sul · Próximo à ponte do rio Camaquã, na divisa com Caçapava do Sul
Registros de herbario determinados actualmente con este nombre.
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| 6350 | Brasil | Rio Grande do Sul | Próximo à ponte do rio Camaquã, na divisa com Caçapava do Sul | 02/11/2003 |
Sin datos de conservación registrados en Flora Vascular Argentina.
Fuente: Flora Vascular Argentina.
Recognition. Gamochaeta erecta is grouped with three species that also occur in southern Brazil: G. ni- grevestis, G. diffusa, and G. girardiana (Fig. 3A). They are all multi-stemmed with concolorous or not mark edly discolorous, obovate or broadly obovate leaves; and capitula arranged in spikes. Gamochaeta erecta resem bles G. diffusa in its discontinuous spikes. However, it has acute inner phyllaries (vs. obtuse-apiculate in G. diffusa).