Staurogyne warmingiana (Hiern) Leonard (1937: 402)

Braz, Denise Monte & Monteiro, Reinaldo, 2017, Taxonomic Revision of Staurogyne (Nelsonioideae, Acanthaceae) in the Neotropics, Phytotaxa 296 (1), pp. 1-40 : 37-38

28. Staurogyne warmingiana (Hiern) Leonard (1937: 402) . Ebermaiera warmingiana Hiern (1877: 68) . Type: — BRAZIL, Minas Gerais, E. Warming 75 (holotype: K!; isotype: C!). ( Fig. 25 )

Subshrub ca. 1.5 m tall, rarely branched, sparsely pilose with glandular trichomes. Petiole 6 − 20 mm long; blade 4.4 − 10 × 2 − 4.3 cm, ovate to elliptic-ovate, apex acute, rarely slightly acuminate, base obtuse to abruptly cuneate, sparsely glandular pilose on both surface, abaxially dense in the veins. Inflorescence in lax, leafy raceme; flowers opposite; bracteoles yellow-green, obovate-elliptic, 4 − 8 × 1.3 − 3 mm, pilose with sparse glandular trichomes. Pedicel 3.4 − 11 mm long; calyx yellow, sparsely glandular pilose, non-ciliate, posterior segment 16 − 20 × 3 − 4.5 mm, 3-nerved, anterior pair of segments 10.2 − 12.4 × 0.5 − 1.3 mm, lateral pair of segments 13.4 − 15.3 × 1.2 − 2.1 mm; corolla yellow, 3.4 − 4.3 cm long, basal tube 2.3 − 3 mm long, anterior lobe 4.5 − 4.8 mm long, externally pilose with sparse glandular trichomes, internally glabrous; posterior stamens 2.6 − 3 cm long, anterior stamens 2.8 − 3.4 cm long, staminode 3 − 4.8 mm long; ovules ca. 28 per locule, posterior lobe of the stigma truncate to slightly divided. Capsule not found.

Specimens examined:— BRAZIL. Minas Gerais: Caeté, Serra da Piedade , 19 o 49’ S, 43 o 40’ W, 16 May 1987, Paula et al.8971 (BHCB, SPF), 6 May 1934, Mello-Barreto 282 (F, R).

Distribution and habitat:— Staurogyne warmingiana was only recorded at Serra da Piedade , in the central portion of the State of Minas Gerais, in elevation of above 900 m.

Phenology:— It was collected with flowers in May and its fruits are unknown.

Taxonomic notes:— Staurogyne warmingiana is characterized by the glandular trichomes on the whole plant and by the leafy inflorescence. Therefore, it is close to S. vauthieriana , which differs in having the leaves, bracteoles, pedicel and calyx much larger, as mentioned above, in addition to distintinc place of occurrence.

Figures

FIGURE 25. Staurogyne warmingiana. A.Flowering branch. B. Flower and bracteoles. C. Bracteole. D. Calyx. E. Anther in frontal view. F. Anther in dorsal view. G. Staminode. H. Stigma in lateral view. I. Corolla lobes (A, C–D, G, I from J. A. Paula et al. 8971; B, E–F, H from Mello-Barreto 282).