Eperua glabriflora (Ducke) R.S. Cowan var. glabriflora

Fortes, Elenice A., Dos, Ilka P., Steege, Hans Ter, Aymard, Gerardo, Secco, Ricardo De S., Martins-Da-Silva, Regina Célia V. & Mansano, Vidal F., 2023, A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae), Phytotaxa 617 (1), pp. 1-127 : 51

8a. Eperua glabriflora (Ducke) R.S. Cowan var. glabriflora

( Figures 10 , 29 , 30 )

Sepal purple, sometimes pale-purple to pink-reddish; Adaxial petal purple, lilac to red; ovary glabrous, fovoate, stipe glabrous.

Phenology:— Flowering throughout the year, except in October, with a peak in July; fruiting from February to March and from May to November.

Distribution:— Brazil (Amazonas, one collection in Pará).

Habitat:— Upland forest, both in terra-firme forest and campinarana, on the sand and clayish soils, from sea level to 125 m elev.

Occurrence in protected areas:— Reserva Florestal Adolpho Ducke, Reserva Biológica de Uatum„, Reserva Florestal ZF-3 ( Brazil, Amazonas).

Etymology:— Eperua glabriflora was first described as a variety of E. bijuga . The glabrous pedicel, hypanthium, and sepals of E. glabriflora differentiate it from the type variety, then the epithet glabriflora probably derives from that characteristic.

Vernacular names:— espadeira (Ducke W.A. s.n. RB20313), morapiranga (Boom B.M. et al. 8699), muirapiranga (Cid-Ferreira C.A. et al. 271, Cid-Ferreira C.A. et al. 4, Coêlho L.F. s.n. INPA 6516, Ducke W.A. 14, 14a, 158 (IIª col), s.n. RB23733, Elias J. & Aloisio 462, Ferreira E. 57-29, Haroldo s.n. INPA 57650, Jorge s.n. INPA 57656, INPA 57656, Krukoff B.A. 8006, Magalhães F.M.M. 223, Mello F.C. de s.n. INPA 55353, Monteiro O.P. & Mello F. s.n. INPA 50065, Oliveira A.A. de et al. 1032, Oliveira A.R. de s.n. INPA 58701, Pessoal do C.P.F. INPA 6065, INPA 6280, Prance G.T. et al. 23446, Reis L.Q. s.n. INPA 57645, INPA 57694, Ribeiro J.E.L.S. 881, Rodrigues W.A. & Osmarino 6932, Rodrigues W.A. & Osmarino 7005, Rodrigues W.A. & Osmarino 7903, Rodrigues W.A. 562, s.n. INPA1043 , Silva S.S. da et al. 3402.2791.2), muirapiranga da folha grande (Oliveira A.R. de collections, Rodrigues W.A. & Osmarino 5982, Rodrigues W.A. & Osmarino 7921).

Uses:— general construction (Rodrigues W.A. s.n. INPA1043 ).

Taxonomic notes:— Eperua glabriflora , along with E. grandiflora subsp. ciliata and E. purpurea are the only species with tubular corolla and glabrous inflorescences. Eperua glabriflora differs from them and all other species by the combination of 2-jugate leaves, non-falcate leaflets with revolute margin, tubular corolla, glabrous inflorescence, and caducous bracteoles attached to the lower middle portion of the pedicels ( Table 2 ). Eperua glabriflora resembles E. bijuga by the corolla size and shape, 2-jugate leaves, and the non-falcate leaflets with two intramarginal veins. However, it differs by the revolute leaflet margins (vs. flat in E. bijuga ); glabrous inflorescence, buds, hypanthium, and sepals (vs. puberulous to puberulent in E. bijuga ); larger and caducous bracteoles (vs. smaller and persistent in E. bijuga ); and shorter obovate ovary (vs. longer and falcate in E. bijuga ).

Specimens examined:— BRAZIL. Amazonas, Itacoatiara , Km 75–70 da rod. Manaus-Itacoatiara, 17 October 1963, Oliveira E. 2709 ( IAN). Itapiranga, rio Uatum „, margem esquerda , subindo o rio, atrás do igarapé do Catitu, 18 July 1979, Cid-Ferreira C.A. et al. 484 ( INPA, MG, NY, RB 00140230, US). Manaus, Distrito Agropecuário da SUFRAMA rodovia BR-174, km 64 depois de 23 km leste na ZF3, fazenda Esteio , reserva no. 1202, arv. No. 3150, 2°24’0”S 59°52’0”W, 03 July 1980, Costa J.C. da et al. S. n INPA 1202.3150 ( NY); Reserva ZF3 , BR 174 , Km 63 , área do Projeto TEAM , parcela do Cabo Frio sub-parcela 16, indivíduo n° 444, 24 August 2004, Oliveira et al. A.C.A. 369 ( INPA ); Reserva Florestal Adolpho Ducke , quadra 21 , tree # 2896, 07 May 1965, Rodrigues W.A. & Osmarino 6932 ( INPA, US ). Novo Air „o, km 23 , KM 19 , 18 November 2012, Kinupp V.F. et al. 4552 ( EAFM). Presidente Figueiredo , estrada da UHE de Balbina , entrando 8 Km no vicinal ao lado do campo de pouso , 1°30’0”S 60°0’0”W, 22 September 1986, Cid-Ferreira C.A. et al. 8239 ( INPA, MG, MO, NY, UFACPZ, US ); ramal ZF5 (SUFRAMA), BR-174 , Km 83 , 2°25’23”S 60°17’36”W, 11 June 2011, Marra D.M. et al. 584 ( EAFM); Rebio Uatum„ , ramal da Morena , corredeira da Anta próximo ao Projeto de Desenvolvimento Sustentável (PDS), 1°0’0”S 59°0’0”W, 06 July 2007, Sakagawa S. & Mesquita J.R. 366 ( INPA, RB 00716854). Pará, Lago do Faro , cabeceira de Inajá , lugar húmido e ligeiramente [...]?, 27 January 1927, Ducke W.A. s.n. RB20313 ( RB, U). Rio de Janeiro (cultivated), Rio de Janeiro, Jardim Botânico do rio de Janeiro, Arboreto canteiro 26ª , 04 February 2020, Fortes E.A. & Camelo M. De C. 150 ( RB).

Figures

FIGURE 10. Geographic distribution of Eperua bijuga, E. glabriflora var. glabriflora, and E. glabriflora var. gynopubescens.

FIGURE 29. Eperua glabriflora var. glabriflora: A. trunk base; B. leaf, adaxial surface; C. leaf, abaxial surface; D. bark, sap-wood, and heartwood; E. inflorescence; F. front view of the flower; G. hypanthium and petalodia (black arrows); H. inner hypanthium and nectary ring (white arrows); I. one-seeded fruit; J. fruit after opening. Specimens A, D, J: Fortes E.A. et al. 192b; E–I: Fortes E.A. & M. de C. Camelo 150. Photos, A, D–H: E.A. Fortes; B, C: F. Farroñay; H: M. Pastore.

FIGURE 30. Eperua glabriflora var. glabriflora: A. flowering and fruiting branchlet; B. hypanthium and base of the stamens joined in a diadelphous sheath; C. anther and part of the filament; D. glabrous carpel; E. adaxial petal. Specimens, A: Fróes R. de L. 24926; B–E: Ducke W.A. 158. Illustrated by Carlos Alvarez.