Guatteria aeruginosa Standl. — Plate, 1929

Maas, P. J. M., Westra, L. Y. T., Guerrero, S. Arias, Lobão, A. Q., Scharf, U., Zamora, N. A. & Erkens, R. H. J., 2015, Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae), Blumea 60 (1), pp. 1-219 : 24-26

3. Guatteria aeruginosa Standl. — Plate 1a, b; Map 2

Guatteria aeruginosa Standl.(1929) 206; R. E.Fr. (1939) 522,f. 35g. — Type: Cooper 526 (holo F; iso BM, G, K, NY, US), Panama, Bocas del Toro, Region of Almirante , Jan. 1928 .

Tree 5–25 m tall, 10–55 cm diam; young twigs densely cover- ed with long-persisting, erect, brown hairs. Leaves: petiole 1–8 mm long, 2–4 mm diam; lamina narrowly elliptic or narrowly oblong-elliptic to narrowly obovate, 18–42 by 5–16 cm (leaf index 2.2–4.2), chartaceous, densely verruculose to less often not verruculose, dull, greenish grey, grey, to dark brown above, brown below, sparsely covered with appressed hairs to glabrous above, but primary vein densely covered with erect, brown hairs, densely to sparsely covered with erect, brown hairs below, base acute to obtuse, often slightly decurrent along petiole, apex acuminate (acumen 5–20 mm long), primary vein flat to impressed or rarely raised above, secondary veins distinct, 12–24 on either side of primary vein, flat to raised above, small- est distance between loops and margin 2 – 5 mm, tertiary veins slightly raised above, reticulate. Flowers solitary on leafless branchlets or in axils of leaves; flowering and fruiting pedicels 13–30 mm long, 1–2 mm diam, fruiting pedicels to c. 4 mm diam, densely covered with erect brown hairs, articulated at 0.2–0.6 from the base, bracts 4–7, soon falling, only lowermost bract seen, broadly elliptic, c. 2 mm long; flower buds depressed ovoid to subglobose, slightly pointed or not; sepals free, broadly ovate-triangular, 4–10{–16} by 5–9{–14} mm, appressed, later becoming reflexed, outer side densely covered with appressed and erect, brown hairs; petals yellowish green or creamy yellow in vivo, ovate, ovate-oblong to ovate-trullate, 13–32{–35} by 6–22{–27} mm, outer side densely covered with appressed and erect, brown hairs; stamens 1.5–2.5 mm long, connective shield papillate to hairy. Monocarps 20–50, green, maturing purple-black in vivo, black in sicco, ellipsoid, 8–12{–15} by 4–6{–11} mm, glabrous, apex apiculate (apiculum <0.5 mm long), wall 0.2–0.3 mm thick, stipes 5–10 by 1–2 mm. Seed ellipsoid, 8–10 by 4–5 mm, brown, rugose, raphe impressed.

Distribution — Honduras, Nicaragua, Costa Rica, Panama, Colombia.

Habitat & Ecology — In forest. At elevations of 0–1200 m, to 1725 m in Colombia. Flowering: throughout the year; fruiting: throughout the year.

Vernacular names — Honduras:Anona (Kelly et al. 14/359), Anona de montaña (Kelly et al. 23/132), Sangro blanco (Kelly et al. 23/132).

Note — Guatteria aeruginosa is characteristic by its dense indument of erect, brown hairs and, in part, by densely verruculose leaves. The basal part of the pedicels is often provided with 2–3 remnants of bracts. There is considerable variation in the density of the tiny warts on leaves. While most specimens collected in Panama have densely verruculose leaves, material from Honduras, Nicaragua, the Heredia region in Costa Rica, the Bocas del Toro region in Panama and Colombia have less densely verruculose or even non-verruculose leaves, but otherwise match G. aeruginosa well in all other features.

Figures

Plate 1 a, b. Guatteria aeruginosa Standl. a. Flowering branch; b. flower and fruit. – c. Guatteria alata Maas & Setten. Part of twig. – d. Guatteria allenii R.E.Fr. Flowers. – e–g. Guatteria alta R.E.Fr. e. Flowering branch; f. flower; g. fruit. – h. Guatteria australis A.St.-Hil. Ripe flower (a: Chatrou et al. 720; b: Chatrou et al. 741; c: McPherson 20133; d: Maas et al. 9543; e–g: Gal Tadri 560; h: Maas et al. 8816). — Photos: a, b: L.W. Chatrou; c: G. Mc Pherson; d: P.J.M. Maas; e–g: Gal Tadri; h. P.J.M. Maas.