27. Guatteria campinensis (Morawetz & Maas) Erkens & Maas — Map 7 Guatteria campinensis (Morawetz & Maas) Erkens & Maas (2008) 405. — Guatteriella campinensis Morawetz & Maas (1984) 20, f. 1, 2. — Type: Morawetz & D. Coêlho 31-24883 (holo INPA; iso INPA 2 sheets, U, WU), Brazil, Amazonas, km 165 of new road from Manaus to Itacoatiara, 24 Aug. 1983. Tree 12–15 m tall, to c. 15 cm diam; young twigs densely covered with a velutinous indument of erect, brown, long-persistent hairs. Leaves: petiole 2–5 mm long, 3–5 mm diam; lamina narrowly elliptic to narrowly obovate, 15–32 by 7–12 cm (leaf index 2.2–2.7), chartaceous, not verruculose, shiny, dark brown above, brown below, sparsely covered with erect, brown hairs above, the primary vein densely so, rather densely covered with a velutinous indument of erect, brown hairs below, base obtuse to subcordate and almost stem-clasping, apex acute to acuminate (acumen to c. 10 mm long), primary vein impressed above, secondary veins distinct, 20 –26 on either side of primary vein, impressed above, more or less forming a marginal vein, at a smallest distance of 2–3 mm from the margin, tertiary veins impressed above, percurrent. Flowers in 1–2-flowered inflorescences in axils of leaves or on leafless branchlets; pedicels 5–7 mm long, c. 3 mm diam, fruiting pedicels 5–11 mm long, 4–5 mm diam, densely covered with a velutinous indument of erect, brown hairs, articulated at c. 0.5 from the base, bracts not seen, not countable; flower buds not seen; sepals free, broadly ovate-triangular, c. 10 by 10 mm, appressed, outer side densely covered with a velutinous indument of erect, brown hairs; petals brown or golden yellow in vivo, ovate, c. 20 by 13 mm, outer side densely covered with a velutinous indument of erect, brown hairs; stamens 1–2 mm long, connective shield hairy. Monocarps 25 –50, brown when ripe in vivo, brown in sicco, ellipsoid, 15–20 by 6–13 mm, densely covered with a velutinous indument of erect, brown hairs, apex rounded, wall 0.5–1{–2} mm thick, stipes 2–5 by 2–5 mm. Seed ellipsoid, 14–17 by 4–7 mm, pale greyish bown, rugulose and longitudinally and transversely grooved, raphe not distinct from rest of seed. Distribution — Amazonian Brazil (Central Amazonas). Habitat & Ecology — In campina forest, on white sand. At elevations below 100 m. Flowering: August; fruiting: August, December. Vernacular names — Not recorded. Note — Guatteria campinensis, formerly put in the genus Guatteriella, shares the velutinous indument of most parts and the leaf venation with G. trichocarpa. It differs from that species, however, by its much shorter petioles (2–5 vs 5–10 mm) and the lack of verruculose structures in the leaves.

Published as part of 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), pp. 1-219 in Blumea 60 (1) on pages 49-50, DOI: 10.3767/000651915X690341, http://zenodo.org/record/16855128