Guatteria chrysophylla Maas & Setten

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 : 57

35. Guatteria chrysophylla Maas & Setten — Map 9

Guatteria chrysophylla Maas & Setten (1988) 252,f. 10. — Type: Davis & Yost 1011 (holo NY; iso F, U 2 sheets), Ecuador, Napo, confluence of Quiwado and Tiwaeno Rivers , 22 Apr. 1981.

Tree 20–30 m tall,> 25 cm diam; young twigs densely covered with erect, golden brown, curly hairs. Leaves: petiole 15–30 mm long, 4–6 mm diam; lamina elliptic to narrowly elliptic, 20–30 by 8–15 cm (leaf index 2–2.6), coriaceous, not verruculose, dull, greyish green above, golden brown below, densely to rather densely covered with hairs on primary vein, otherwise glabrous above, densely covered with erect, golden brown, curly hairs below, base acute to attenuate, extreme base decurrent along petiole, apex acuminate (acumen c. 15 mm long), primary vein impressed to flat above, secondary veins distinct, 15–18 on either side of primary vein, raised above, smallest distance between loops and margin 0.5–1.5 mm, tertiary veins raised above, mostly percurrent. Flowers in 1(–2)-flowered inflorescences in axils of leaves or leafless branchlets; pedicels 15–20 mm long, c. 2 mm diam, fruiting pedicels to c. 30 mm long, 3–6 mm diam, densely covered with erect, golden brown, curly hairs, becoming glabrous, articulated at 0.2–0.3 from the base, bracts c. 6, soon falling, not seen; flower buds ovoid, pointed; sepals free, broadly ovate-triangular, 10–13 by 7–9 mm, appressed, outer side densely covered with erect, golden brown, curly, hairs; petals colour not recorded, only seen in bud stage, outer side densely covered with erect, golden brown, curly, hairs; stamens not seen. Monocarps 3–20, green in vivo, black in sicco, ellipsoid to obovoid, 17–25 by 12–18 mm, surface smooth to irregularly wrinkled in sicco, subglabrous, apex rounded to acute, wall 1.5–2 mm thick, stipes 8–18 by 1.5–3 mm. Seed ellipsoid, 13–21 by 8–12 mm, reddish brown, rugose, raphe not distinct from rest of seed.

Distribution — Amazonian Ecuador (Napo, Pastaza), Peru (Loreto).

Habitat & Ecology — In non-inundated forest, on red soil. At elevations of 0– 400 m. Flowering: May; fruiting: April, October.

Vernacular name — Ecuador: Menedowe (Tomo Upriver dialect), which means jaguar’s tree (Davis & Yost 1011).

Uses — Ecuador: ‘Bark crushed and mixed with water, rubbed over head and shoulders and fever will flee’ (Davis & Yost 1011).

Note — Guatteria chrysophylla shares the indument of curly hairs, the pointed flower buds, long sepals and the large, wrinkled monocarps with G. discolor , a species occurring in Amazonian Bolivia, Brazil, Peru and French Guiana. It differs, however, by rugose instead of smooth seeds, the longer petioles (15–30 vs 5–10(–15) mm), a mostly percurrent tertiary venation, and the longer stipes (8–18 vs 2–10 mm).