Stryphnodendron roseiflorum (Ducke) Ducke (1944: 8)

Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De & Souza, Vinicius Castro, 2022, A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade), Phytotaxa 544 (3), pp. 227-279 : 267-268

32. Stryphnodendron roseiflorum (Ducke) Ducke (1944: 8) .

≡ Stryphnodendron guianense (Aubl.) Benth. subsp. guianense var. roseiflorum Ducke (1933: 15) .—Type: BRAZIL.Amazonas, “Frequens in sylvis secundariis siccioribus circa Manaos”, 22 June 1929, Ducke s.n. (lectotype RB 10406/ 00540075!, designated by Martins (1981), isolectotypes G!, K!, US!)

Treelets to trees (2–) 6–20 m tall. Leaves with (9–)10–13 pairs of pinnae; (6–)10–19 pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (4–)7–9(–11) × 3–5 mm, usually oblong-rhombic to oblong, distal leaflets usually obovate, proximal usually elliptic, chartaceous, discolor, upper surface usually glabrous to subglabrous, lower surface pubescent sometimes puberule, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi, vinaceous to reddish; cymulae of solitary to 4-ternate spikes; spikes (6–)8–11.5(–13.5) cm long. Flowers usually monoclinous, sometimes diclinous, corolla tube glabrous, puberule at the apex of the lobes, pinkish. Fruit a nucoid legume, straight to slightly curved, turgid, seeds non-prominent, valves coriaceous, inconspicuously nerved ( Fig. 1G ).

Vernacular names: — Paricarana, Tapiririca, Faveira-camuzé, Camuzé, Fava ( Brazil, Amazonas).

Nomenclatural note: — The name Stryphnodendron roseiflorum is based on three syntypes and was later lectotypified with a specimen deposited at RB. However, this gathering is currently mounted on two separate sheets under the same register number ( RB 10406 ), and the lectotype indicated by Martins (1981) corresponds to the one identified by the barcode number 00540075 .

Distribution and habitat: —This species occurs predominantly in the Coastal Atlantic, Manaus and Xingu-Madeira provinces of Central-Eastern Amazon, in campos, campinarana or open secondary areas (capoeiras), either in flooded or non-flooded areas and usually associated with sandy soils. A few individuals were disjunctly collected in areas of higher altitudes in Central Brazil, also in more open physiognomies with shallow and generally sandy soils of Minas Gerais state.

Conservation: —Least Concern (LC) [AOO= 40.000 km 2, EOO= 2,675,704.791 km 2].

Phenology: —Flowering specimens were collected from May to November and in January and March, fruiting specimens from March to June.

Selected specimens examined:— BRAZIL. Distrito Agropecuário , Fazenda Dimona, ca. 72km N of Manaus, 50-125 m, 02°19’S, 60°05’W, 02 November 1988, fl., M. Pacheco et al. 22 ( INPA, K, NY, U, US) . Manaus , Reserva Florestal Ducke, Manaus-Itacoatiara km 26, bosque do lado direito da estrada, depois do igarapé, 03 June 1964, fr., W . Rodrigues & A. Loureiro 5836 ( INPA, RFA, US) .

Figures

FIGURE 1. Tree species of Stryphnodendron. A. Stryphnodendron pulcherrimum (Willd.) Hochr.; B. Stryphnodendron racemiferum (Ducke) W.A.Rodrigues; C. Stryphnodendron coriaceum Benth.; D. Stryphnodendron adstringens (Mart.) Coville; E. Stryphnodendron rotundifolium var. rotundifolium Mart.; F. Stryphnodendron rotundifolium var. villosum (Benth.) Scalon; G. Stryphnodendron roseiflorum (Ducke) Ducke.