Staurogyne ericoides Lindau (1898: 44)

Braz, Denise Monte & Monteiro, Reinaldo, 2017, Taxonomic Revision of Staurogyne (Nelsonioideae, Acanthaceae) in the Neotropics, Phytotaxa 296 (1), pp. 1-40 : 13-14

6. Staurogyne ericoides Lindau (1898: 44) . Type: — BRAZIL. Minas Gerais: Alegria , 9 June 1884, Fl. Jouves (?), A. Glaziou 15295 (holotype: P!; isotypes: C!, K!, R!; photograph: FI!). ( Fig. 8 )

Ebermaiera minarum var. microphylla Nees von Esenbeck (1847a: 17) , syn. nov. Lectotype (designated here): — BRAZIL. Minas Gerais: L. Riedel s.n. (lectotype LE 467 !).

Subshrub 0.5 − 1 m tall, usually branched, densely pilose with glandular trichomes. Petiole 3 − 8 mm long; blade lanceolate to linear, 1.8 − 6 × 0.5 − 1.3 cm, apex acute, base acute to subobtuse, sparsely glandular and simple pilose on both surfaces, sometimes dense in the veins. Inflorescence in lax, leafy raceme; flowers opposite; bracteoles green, lanceolate to elliptic-obovate, 3.7 − 7 × 0.9 − 1.1 mm, sparsely pilose with glandular trichomes. Pedicel 3 − 7.6 mm long; calyx yellow to greenish-yellow, sparsely glandular and simple pilose, non-ciliate, posterior segment 11.7 − 17 × 2.3 − 4 mm, 3-nerved, lateral pair of segments 9.3 − 12.9 × 0.7 − 1.2 mm, anterior pair of segments 9.7 − 15 × 1 − 1.9 mm; corolla tubular, yellow, 2.4 − 3.5cm long, basal tube 2 − 6 mm long, anterior lobe 3 − 4.1 mm long, externally pubescent with glandular and simple trichomes, rarely glabrous, internally glabrous; posterior stamens 1.7 − 3 cm long, anterior stamens 2 − 2.9 cm long, staminode 3 − 7.5 mm long; ovules 28 − 34 per locule, posterior lobe of the stigma truncated to slightly divided. Capsule 9.0 − 12.6 × 2.5 − 3.3 mm, sparsely glandular pilose.

Specimens examined:— BRAZIL. Minas Gerais: Betim-Brumadinho, 8 July 1940, Oliveira 101 (RB); Catas Altas, Serra do Caraça, 31 May 1998, Vasconcelos s.n. (BHCB-41845); Furnas, Ribeirão das Capivaras, 26 August 1972, Emydgio et al. 3630 (R); Itabirito, 5 July 1994, Teixeira s.n. (BHCB-25204, SPF-100239); Jaboticatubas, P. N. Serra das Bandeirinhas , 9 September 1992, Campos et al. CFSC-12985 (SPF); Lavras, 10 April 2001, Chaddad Jr. 48 (ESA); Lavras, Reserva Poço Bonito, 6 June1987, Gavilanes 3083 (ESAL); Lavras, Reserva Poço Bonito, 24 March 1991, Gavilanes 5000 (ESAL); Mariana, 9 July 1997, Roschels.n. (OUPR-8822); Nova Lima, Serra da Muctuca, Barreiro , 15 April 1945, Williams & Assis 6638 (R; U); Rio das Velhas, 1 June 1903, Damásio 1555 (RB); Ouro Branco, Serra do Ouro Branco, 27 July 2002, Coiafa 184 (VIC); Ouro Branco, Serra do Ouro, 13 July 2002, Paula et al. 162 (VIC); Ouro Branco, Serra do Ouro, 1915, André s.n. (R-102379); Ouro Preto, Chapada, 5 August 1980, Lima et al. 1282 (RB); Ouro Preto, Timbopeba, August 1824, Riedel s.n. (LE-06); Ouro Preto, 1896, Silveira & Thomas 1008 (R), 15 February 1999, Silva s.n. (OUPR-8563), 31 July 1976, Davis & Shepherd 59676 (UEC), July 1892, Magalhães 481 (OUPR), Damazio 1749 (OUPR); without locality, 25 May 1980, Baldini s.n. (OUPR-25458), 26 May 1980, Baldini s.n. (OUPR-25459), 1831, Ackermann s.n. (BR-840394), no date, Riedel s.n. (LE 06), no date, Kassis s.n. (OUPR-097), no date, Damazio s.n. (OUPR-091).

Distribution and habitat:— Staurogyne ericoides is endemic to the State of Minas Gerais, occuring in riparian forests of the southern portion of the Espinhaço Range and extending some kilometers to the south.

Phenology:— It was collected with flowers and fruits from February to August, but mainly in the months of July and August.

Taxonomic notes:— Staurogyne ericoides is recognized by its lanceolate to linear leaves,and the leafy inflorescence, with the flowers occurring in the axiles of the apical leaves. Other species whose flowers also occur in the axiles of the apical leaves are S. vauthieriana ( Nees von Esenbeck 1847a: 15) Kuntze (1891: 497) and S. warmingiana ( Hiern 1877: 68) Leonard (1937: 402) ; nevertheless in these two species the leaves are ovate or elliptical and 2 − 6 cm broad (not lanceolate to linear, 0.5 − 1.3 cm broad). Staurogyne ericoides is also close to S. hirsuta ( Nees von Esenbeck 1847a: 18) Kuntze (1891: 497) by the glandular indumentum throughout the plant and the lanceolate leaves, but they differ by the leaves 0.5 − 1.3 cm broad (not 0.9 − 2.2 cm broad), the flowers in a lax leafy (not dense bracteate) raceme and the corolla 2.4 − 3.5 cm long (not 2.7 − 4.5 cm long).

When Ebermaiera minarum var. microphylla was established by Nees von Esenbeck (1847a: 17), three gatherings, Ackermann s.n. (BR 840394), L. Riedel s.n. (LE 06) and L. Riedel s.n. (LE 467), were cited, and they are syntypes according to Art. 9.5 of ICN (Melborne Code, McNeill et. al. 2012). Since no holotype was designated, Riedel s.n. (LE 467) is here designated as the lectotype because of its good condition. Lindau (1898) overlooked this taxon and published it again as S. ericoides .

Figures

FIGURE 8. Staurogyne ericoides. 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 frontal view. I. Corolla lobes (A from Teixeira (BHCB 25204); B–I from Vasconcelos (BHCB 41845)).