Guatteria insculpta 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 : 97-98

82. Guatteria insculpta R.E.Fr. — Map 18

Guatteria insculpta R.E.Fr. (1939) 504, f. 28a,b; Murillo A. & Restrepo (2000) 95, f. 25; Maas & Westra (2011) 131, f. 1c, 14, 15. — Type: Spruce 2896 (holo K 2 sheets; iso BM, BR, P), Brazil, Amazonas , Ipanoré (‘Panuré’), Rio Uaupés, Mar. 1853.

Tree or shrub 5–25 m tall, 5–30 cm diam; young twigs densely covered with a velutinous indument of erect, red-brown hairs, finally glabrous. Leaves: petiole 5–10 mm long, 4–7 mm diam; lamina narrowly elliptic to narrowly obovate, 20– 50 by 5 –16 cm (leaf index 2.3–4.4), chartaceous, very densely and minutely verruculose, dull, greyish green above, brown below, glabrous above, densely covered with erect, red-brown hairs below, base acute, extreme base obtuse,apex acuminate (acumen 5–15 mm long), primary vein impressed above, secondary veins distinct, 20–35 on either side of primary vein, impressed above, sometimes forming a more or less distinct marginal vein, at a smallest distance of 3–4 mm from the margin, tertiary veins impressed above, percurrent. Flowers solitary in axils of leaves or on leafless branchlets; pedicels 18–40 mm long, 2–4 mm diam, fruiting pedicels to c. 50 mm long, c. 5 mm diam, densely cov- ered with erect, red-brown hairs, articulated at 0.1–0.2 from the base, bracts soon falling, the upper bract to c. 7 mm long; flower buds not seen; sepals free, triangular to broadly ovate-triangular, 10–12 by 7–8 mm, reflexed, outer side densely cov- ered with erect, red-brown hairs; petals green in vivo, obovate to elliptic, 16–20 by 8–12 mm, outer side sparsely covered with appressed, white hairs, the base densely so; stamens 1.5–2 mm long, connective shield papillate. Monocarps 10– 50, green, maturing brown in vivo, pale brown in sicco, ellipsoid, 10–18 by 5–12 mm, sparsely covered with appressed hairs, apex rounded to apiculate (apiculum <0.5 mm long), wall 0.5–1 mm thick, stipes 5–10 by 1–2 mm. Seed ellipsoid, 12–19 by 6–8 mm, shiny brown, longitudinally and transversely grooved, raphe not distinct from rest of seed.

Distribution — Amazonian Colombia (Amazonas, Caquetá), Venezuela (Amazonas), Brazil (Amazonas).

Habitat & Ecology — In non-inundated, often caatinga forest, on sandy soil. At elevations of up to 270 m. Flowering: March, April, July, October; fruiting: January, February, April, October, November.

Vernacular names — Colombia: Jakuo (Muinane name) (Murillo A. & Rodríguez 544), Jimokai (Huitoto name), Palo de perfume.

Note — Guatteria insculpta can be recognized by very densely and minutely verruculose leaves, and by young twigs covered with a velutinous indument of erect red-brown hairs. Furthermore, this species stands out by the dense cover of erect brown hairs on the lower side of the leaves.