Guatteria peruviana R.E.Fr.

18. Guatteria peruviana R.E.Fr. View in CoL — Fig. 19 View Fig , 20 View Fig ; Map 3

Guatteria peruviana R.E.Fr. (1938) 720. — Type: Killip & Smith 27522 (holo F; iso B, US (2 sheets)), Peru, Loreto, Rio Marañon, near mouth of Río Tigre , 115 m, 19 Aug. 1929.

Guatteria macrocarpa R.E.Fr. (1938) 719, syn. nov. — Type: Killip & Smith 28965 (holo US; iso B), Peru, Loreto, Santa Rosa, lower Río Huallaga, below Yurimaguas , 135 m, 1–5 Sept. 1929.

Tree 6–15 m tall, diam not recorded; young twigs densely to rather densely covered with appressed and some erect hairs, soon glabrous. Leaves: petiole 5–10 mm long, 1–3 mm diam; lamina narrowly elliptic, 15 –20 by 5 – 8 cm (leaf index 2.5 –3), chartaceous, rather densely verruculose, greenish brown to brown on both sides, glabrous above, rather densely to sparsely covered with appressed hairs below, particularly along primary vein, base acute to obtuse, apex acuminate (acumen 5 –20 mm long), primary vein flat to slightly impressed above, secondary veins distinct, 12–17 on either side of primary vein, flat above, smallest distance between loops and margin 1–3 mm. Flowers in 1-flowered inflorescences in axils of leaves; pedicels 7–12 mm long, 1–1.5 mm diam, fruiting pedicels up to 15 mm long, 2– 3 mm diam, densely to sparsely covered with appressed hairs, articulated at 0.2– 0.3 from the base, bracts 5 – 6, soon falling; flower buds not seen; sepals free, broadly ovate-triangular, 4 – 5 by 4 –5 mm, reflexed, outer side densely covered with appressed hairs; petals pale salmon pink, elliptic, 15–20 by 5 – 6 mm, outer side densely covered with appressed hairs; stamens c. 2 mm long, connective shield glabrous. Monocarps c. 25, brown in sicco, ellipsoid, 16–24 by 8–10 mm, sparsely covered with appressed hairs, apex apiculate (apiculum c. 0.5 mm long), wall c. 0.5 mm thick, stipes 5– 8 by 1– 2 mm. Seed ellipsoid, c. 16 by 7 mm, dark brown, strongly longitudinally and transversely ridged.

Distribution — Peru ( Loreto).

Habitat & Ecology — In non-inundated forest and along river banks.At elevations of 125– 580 m. Flowering:August; fruiting: September.

Vernacular names — None.

Other specimen examined. PERU, San Martín, trail across valley from km 35 to km 20 on Tarapoto-Yurimaguas road, 7 Dec. 2003, 580 m, Pirie et al. 169 ( U, sterile collection) .

Note — Guatteria peruviana is united here with G. macrocarpa , since the features given by Fries (number of secondary veins and leaf base) are highly variable in the genus Guatteria and can therefore hardly be used for specific distinction.