Guatteria sabuletorum R.E.Fr.

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 : 153

142. Guatteria sabuletorum R.E.Fr. — Map 30

Guatteria sabuletorum R.E.Fr. (1939) 409, t. 27. — Type: Ducke RB 19617 (holo S; iso RB), Brazil, Pará, Campina do Infiry , near Lago de Faro, 25 Jan. 1927.

Shrub or tree 6–12 m tall, c. 10 cm diam; young twigs sparsely covered with appressed hairs, soon glabrous. Leaves: petiole 2–7 mm long, 1–2 mm diam; lamina narrowly oblong to nar- rowly oblong-ovate, 10–23 by 4–8 cm (leaf index 3–3.7), chartaceous, not verruculose, shiny, greyish brown to dark brown above, brown below, glabrous above, sparsely covered with small appressed hairs to glabrous below, base obtuse to truncate, somewhat oblique or not, apex acute to acuminate (acumen to c. 15 mm long), primary vein impressed above, secondary veins distinct, 15– 25 on either side of primary vein, flat to slightly raised above, smallest distance between loops and margin 3–7 mm, tertiary veins flat to slightly raised above, reticulate to percurrent. Flowers in 1–2-flowered inflorescences in axils of leaves; pedicels 8–13 mm long, 1–1.5 mm diam, fruiting pedicels to c. 2 mm diam, sparsely covered with ap- pressed hairs, articulated at c. 0.3 from the base, bracts 5–7, soon falling, the basal ones not seen, one upper bract seen, elliptic, c. 7 mm long; flower buds not seen; sepals free, broadly ovate-triangular, 3–5 by 3–5 mm, soon reflexed, outer side densely covered with appressed hairs; petals brownish green or greenish in vivo, elliptic to obovate or narrowly so, 10–16 by 4–8 mm, outer side densely covered with appressed and erect hairs; stamens c. 1.5 mm long, connective shield papil- late. Monocarps 20–30, colour in vivo not recorded, brown in sicco, ellipsoid to broadly ellipsoid, 7–10 by 5–7 mm, sparsely covered with appressed hairs, apex rounded to apiculate (api- culum <0.5 mm long), wall 0.3–0.5 mm thick, stipes 4–5 by c. 1 mm. Seed ellipsoid, 8–9 by 5–6 mm, brown to dark brown, pitted, raphe raised.

Distribution — Amazonian Brazil (Pará).

Habitat & Ecology — In savanna (‘campina’) or non-inun- dated (‘terra firme’) forest, the type collection on dry sandy places (‘in sabulosis siccis’). At elevations of about sea level. Flowering: January, June; fruiting: June.

Vernacular names — Not recorded.

Note — Guatteria sabuletorum is characterized by a truncate and somewhat oblique leaf base, loops far removed from the leaf margin (3–7 mm) and short stipes of 4–5 mm long.