Eugenia dittocrepis O. Berg

Amorim, Gabriela Dos Santos, Barbosa, Maria Regina De Vasconcellos, Jr, Eduardo Bezerra De Almeida & Thomas, William Wayt, 2022, Taxonomic study of Myrtaceae in forest fragments in Amazonian Maranhão, Brazil, Phytotaxa 568 (1), pp. 27-60 : 36-37

7. Eugenia dittocrepis O. Berg (1857–1859: 292).

Type :— BRAZIL. “Habitat in silvis ad villam Ega in prov. do alto Amazonas”, Pöppig 3109 (syntypes: P [01902445], image, G [00223425], image, BM [000953773], image). ( Fig 3 AB)

Shrubs ca. 1.5 m. Twigs glabrous. Leaves with petioles 9–10 mm long, glabrous, unchanneled or shallowly channeled; blades elliptic, oblong, or oval, 10–12.1 × 3.6–5.1 cm, glabrous, chartaceous, discolorous; glands not seen; base cuneate or rounded; apex acute, cuneate, rarely rounded; midvein adaxially flat; lateral veins visible, not arched, 10 to 15 pairs; intra-marginal vein 1–3 mm from the margin, margin revolute. Inflorescence axillary, a fascicle, the axis 1–2 mm, glabrescent; bracts orbicular, 0.5 × 0.5 mm, glabrous, persistent in the fruit; pedicels 4–9 mm long, glabrous; bracteoles ovate, 1.5 × 1 mm, glabrous, persistent in the fruit; flower buds globose, 3–4 × 5–6 mm, not constricted above ovary; calyx-lobes free, four, orbicular, 1.4–2 × 1–2 mm, glabrous, not reflexed, persistent in the fruit; ovary not seen. Immature fruit globose, ca. 1 cm diameter, glabrous, surface smooth.

Note:— E. dittocrepis may be recognized by its leaves, which are green-yellowish adaxially and reddish-brown abaxially in the dried material, with revolute margins; its inflorescence, which is a glabrescent fascicle with persistent bracteoles in fruit; and its globose, glabrous, and smooth fruit. This species is morphologically related to E. stictopetala but can be distinguished by its revolute leaf margins (vs. flat) and its discolorous leaves (vs. concolorous leaves).

Distribution and habitat:— Known from Colombia, Ecuador, Peru, Venezuela and northeastern and northwestern Brazil (Acre, Amazonas, Maranhão, Mato Grosso and Pará states) (POWO 2020, Flora do Brasil 2020). In Amazonian Maranhão, E. dittocrepis was found growing along waterways.

Phenology:— Fruiting in April.

Specimens examined:— BRAZIL. Maranhão: Cândido Mendes, Maracassumé River Region , 30 April 1932 (fr.), R.L. Fróes 1709 ( NY!). Viana, 1958 (st.), O. Carvalho 5 (RB, image) .

Figures

FIGURE 3. A–B. Eugenia dittocrepis. A. Habit. B. Immature globose fruit. C–D. E. lambertiana. C. Habit. D. Inflorescence in fascicle. E–H. E. patens. E. Habit. F. Inflorescence in a simple raceme. G. Flower bud. H. Fruits. I–M. E. patrisii. I. Habit. J. Inflorescence in raceme auxotelic. K. Flower bud. L. Imature fruit with indumentum. M. Mature glabrous fruit.