Encyclia duveenii Pabst (1976: 66)

Bastos, Cláudia A., Meneguzzo, Thiago E. C. & Berg, Cássio Van Den, 2018, A taxonomic revision of the Brazilian species of Encyclia (Orchidaceae: Epidendroideae: Epidendreae), Phytotaxa 342 (1), pp. 448-450 : 448-450

15. Encyclia duveenii Pabst (1976: 66) . Type:— BRAZIL. Minas Gerais: Grão Mogol, November 1975, Duveen s.n. (holotype: HB 63372 !) ( Fig. 11 and 25B ).

Lithophytic herbs, 17.8−23.4 cm tall. Pseudobulbs conical, 6.6−7.8 × 0.8−1.7 cm. Leaves 2−3, oblanceolate, 10.1−16.3 × 1.2−1.4 cm, apex obtuse to acute. Inflorescence a loosely 8−10-flowered, simple to weakly compound raceme; peduncle 49.5−60.0 cm long; rachis 19.4−26.2 cm long. Pedicel 2.2 × 0.2 cm, warty; sepals brownish, dorsal lanceolate, 1.9 × 0.6 cm, laterals lanceolate, 2.0 × 0.6 cm, reflexed, margin entire, apex acute; petals brownish, spatulate, c. 1.7 × 0.7 cm, reflexed, margin entire, apex mucronate; lip with claw 0.15 × 0.25 cm, lateral lobes free in relation to the ovate midlobe, 0.7 × 0.4 cm, white to pink, at a 45° angle to the midlobe (in the flattened lip), not overlapping it, margin entire, apex obtuse, midlobe rounded, 0.7 × 0.9 cm, pink with darker pink streaks, conduplicate, margin undulate, apex mucronate, callus cymbiform, acute; column clavate, 1.0 × 0.3 cm, clinandrium apex tridentate, lateral teeth triangular, apex acute, arms of column elliptic, 0.15 × 0.20 cm, apex obtuse; stigma elliptic, with basal hooks; anther one, yellow, 0.4 × 0.2 cm.

Distribution and habitat:— Endemic to Minas Gerais ( Fig. 10 ).

Phenology:— Flowering September–November.

Etymology:— Named in honour of the collector of the type, Denis Duveen.

Taxonomic notes:— Encyclia duveenii is close to E. alboxanthina and the other species of the “ osmantha alliance” in the phylogenetic tree of Bastos (2014). All these species have a dark yellow anther and broadly spatulate petals and sepals. The reflexed, brownish, longitudinally incurved sepals and petals distinguish E. duveenii from the other members of the alliance.

Selected specimens exmined: BRASIL. Minas Gerais: Botumirim, source of the São Domingos Stream, 1280 m, 29 September 1997, Melo-Silva et al. 1474 ( HUEFS, SP, SPF); Grão Mogol, basin of the Ribeirão da Morte , 900−1000 m, 4 November 1987, Melo-Silva et al. 11478 ( HUEFS, SP, SPF) .

Figures

FIGURE 10. Distribution in Brazil of Encyclia cyperifolia, E. dichroma, E. duveenii, E. fimbriata, E. fowlie and E. gallopavina.

FIGURE 11. A−D. Encyclia cyperifolia. A. Dorsal sepal. B. Lateral sepals. C. Petal. D. Lip (sin collector, ESA 5268). E−K. Encyclia dichroma. E. Dorsal sepal. F. Lateral sepals. G. Petal. H. Lip. I. Detail of lip callus. J. Column front view. K. Column side view (Belém & Pinheiro 2426). L−S. Encyclia duveenii. L. Habit. M. Dorsal sepal. N. Lateral sepals. O. Petal. P. Lip. Q. Detail of lip callus. R. Column front view. S. Column side view (Pirani et al. 12470). Illustration by Carla de Lima.

FIGURE 25. A. Encyclia dichroma. B. Encyclia duveenii. C. Encyclia fimbriata. D. Encyclia fowliei. E. Encyclia gallopavina. F.Encyclia gonzalezii. G. Encyclia granitica. H. Encyclia ionosma. I. Encyclia jenischiana. J. Encyclia linearifolioides. K. Encyclia mapuerae. L. Encyclia oliveirana. (Photographers: A−B, D, F−L: C. van den Berg. C: R. V. Leitão. E: A. Peres Júnior).