Staurogyne hirsuta (Nees) Kuntze (1891: 497)

Braz, Denise Monte & Monteiro, Reinaldo, 2017, Taxonomic Revision of Staurogyne (Nelsonioideae, Acanthaceae) in the Neotropics, Phytotaxa 296 (1), pp. 1-40 : 19-20

12. Staurogyne hirsuta (Nees) Kuntze (1891: 497) . Ebermaiera hirsuta Nees von Esenbeck (1847a: 18) . Lectotype (designated by Braz & Monteiro 2011b: 175): — BRAZIL. Minas Gerais: ‘‘Tejuco,’’ 1883, A.C. Vauthier 239 (lectotype: P!; isolectotype: GZU!).( Fig. 12 )

Staurogyne glutinosa Lindau (1897: 644) . Type: — BRAZIL. Minas Gerais: without date, C.A.W. Schwacke 10515 (holotype: B destroyed; neotype (designated here):—F-photo negative number 5866 (F on-line image!).

Subshrub 30 − 60 cm tall, usually branched, densely pilose with glandular trichomes. Petiole 3 − 11 mm long; blade lanceolate to elliptic-lanceolate, 3.5 − 7.9 × 0.9 − 2.2 cm, apex and base acute, pilose with dense simple and glandular trichomes on both surfaces. Inflorescence in usually dense, terminal, bracteate raceme, 7 − 10.5 cm long, sessile, rachis, bract and bracteoles densely glandular pilose; bract and bracteoles green, rarely yellowish-green, bract elliptic to lanceolate-elliptic, 10 − 35 × 4.5 − 11 mm, usually 1-nerved, bracteoles lanceolate to lanceolate-obovate, 4 − 8.5 × 1.3 − 2.4 mm. Pedicel 3.5 − 6.5 mm long; calyx yellow to slightly green at the apex, sparsely pilose with glandular trichomes, rarely simple, non-ciliate, posterior segment 14.4 − 22 × 3 − 5 mm, 3-nerved, lateral pair of segments 10.2 − 16 × 0.5 − 1.3 mm, anterior pair of segments 13 − 21 × 1.5 − 2.8 mm; corolla yellow, 2.7 − 4.5 cm long, basal tube 2.5 − 5 mm long, anterior lobe 3.5 − 5.5 mm long, externally with glandular and simple trichomes, sometimes dense, internally glabrous; posterior stamens 1.9 − 4.2 cm long, anterior stamens 1.7 − 4 cm long, staminode 2.3 − 7 mm long; ovules 25 − 36 per locule, posterior lobe of the stigma slightly truncate or concave, rarely divided. Capsule 4 − 4.5 × 10 − 11 mm, sparsely glandular pilose.

Specimens examined:— BRAZIL. Minas Gerais: Belo Horizonte, 13 May 1935, Mello-Barreto 3234 ( HB, R), Serra do Curral , 19 June 1955, Roth 1778 ( RB) ; Jaboticatubas, Serra do Cipó, 5 August 1972, Hatschbach 29866 ( HB, MBM), 20 August 1972, Joly & Semir 3003 ( RB, UEC), 20 February 1968, Irwin et al. 20574 ( UB, W), 8 April 1974, Semir & Sazima 4989 ( UEC), 14 February 1968, Irwin et al. 20009 ( BR, K, M, P, UB) ; Ouro Branco , 1915, André s.n. (R-102.379) ; Santana do Riacho, Serra do Cipó , 7 September 1987, Simão & Pires CFSC-10439 ( SPF), 30 May 1991 ,

Pirani et al. CFSC-12317 (SPF), 1 October 1999, Lombardi 3200 (BHCB), 6 September 1980, Forero et al. 7772 (SPF), 6 September 1980, Forero et al. 7913 (SPF), 24 May 1980, Cordeiro &Pirani CFSC-6120 (SPF), 7 June 1997, Farinnaccio et al. 59 (HRCB), 5 July 2001, Souza et al. 25196 (ESA), Parque Nacional da Serra do Cipó, 5 July 1989, Kameyama et al. CFSC-11537 (HRCB, SPF); Tiradentes, 30 June 1987, Leitão-Filho et al. 19333 (UEC).

Distribution and habitat:— Staurogyne hirsuta is endemic to the Serra do Cipó, in the southern portion of the Espinhaço Range, in the State of Minas Gerais, at elevations above 1000 m.

Phenology:— It was collected with flowers and fruits mainly from May to September.

Taxonomic notes:— Staurogyne hirsuta is especially recognized by the glandular pilosity usually dense all over the plant, by the leaves usually lanceolate, the raceme leafy-bracteate, with leaves gradually diminishing up to the apical bracts and slightly differentiated. Staurogyne hirsuta is close to S. ericoides by the lanceolate leaves, but differs by leaves with dense (not sparse) pilosity, the dense raceme (not lax), the bracts differenciated (not identical) from the leaves, and the corolla 2.7 − 4.5 mm long (not 2.4 − 3.5 mm). It is also close to S. flava and some differences between the two species are discussed under the latter. Kameyama (1995) treated Staurogyne glutinosa as a synonym under S. hirsuta .

Figures

FIGURE 12. Staurogyne hirsuta. A.Flowering branch. B. Flower, bract and bracteoles. C. Bract. D. Bracteoles. E. Calyx. F. Anther in frontal view. G. Anther in dorsal view. H. Staminode. I. Stigma in lateral view. J. Corolla lobes (A–E, J from Souza 6391; F–G from Kameyama et al. CFSC-11537).