Guatteria longicuspis R.E.Fr.

13. Guatteria longicuspis R.E.Fr. View in CoL — Fig. 16 View Fig ; Plate 1g; Map 2 View Map 2

Guatteria longicuspis R.E.Fr. (1900) 18, t. 2, f. 3–5. — Duguetia leptocarpa Benth. ex R.E.Fr. (1900) 18. — Type: Spruce s.n. (holo B; iso BM, K, P), Brazil, Amazonas, São Gabriel da Cachoeira, Jan.–Aug. 1852.

Guatteria amazonica R.E.Fr. (1938) 720, syn. nov. — Type: J.G. Kuhlmann RB24260 (holo S; iso RB), Peru, Loreto, Río Amazonas, Chimbote , 3 Mar. 1924.

Guatteria microcalyx R.E.Fr. (1939) 497, f. 29c, d, syn. nov.— Type: Krukoff 1033 (holo S; iso BM, G, K, NY, S, U), Brazil, Pará , Fordlandia, Tapajos River region, Sept. 1931.

Guatteria sp. 2 Chatrou et al. (1997) 109.

A mostly cauliflorous tree 3 –13 m tall, 4–15 cm diam; young twigs densely to sparsely covered with appressed hairs, soon glabrous. Leaves: petiole 2– 5 mm long, 2– 4 mm diam; lamina narrowly oblong-elliptic to narrowly obovate, 20– 35 by 4 –10 cm (leaf index 2.8 – 6), chartaceous, rather densely to sparsely, sometimes densely verruculose, greyish to brownish above, brown below, glabrous above, sparsely covered with appressed 133 135 hairs up to 1 mm long below, base acute or obtuse, often oblique, apex acuminate (acumen 10– 20 mm long), primary vein impressed above, secondary veins distinct, 15– 30 on either side of primary vein, impressed above, often with a distinct marginal vein, smallest distance between loops and margin 2 –3 mm. Flowers mostly in 1-flowered inflorescences, on densely branched compact clusters, on the trunk, sometimes on large leafless branchlets, rarely axillary; pedicels 15– 30 mm long, 1–2 mm diam, fruiting pedicels up to 35 mm long, 3 –4 mm diam, densely covered with appressed hairs, articulated at 0.2– 0.4 from the base, bracts 4 – 6, soon falling; flower buds not seen; sepals free, broadly ovate-triangular, 4 –7 by 4 – 6 mm, appressed to reflexed, outer side densely covered with appressed hairs; petals yellow to greenish yellow in vivo, elliptic to obovate, 15 –22 by 7–12 mm, outer side densely covered with appressed hairs; stamens 1.5– 2 mm long, connective shield densely papillate. Monocarps 25– 40, green, maturing dark brown in vivo, brown in sicco, ellipsoid, 17–23 by 4 –11{–13} mm, rather densely covered with appressed hairs, soon subglabrous, apex round- ed, wall 0.4– 0.5 mm thick, stipes 5 –10 by 1 mm. Seed ellipsoid, 13–17 by 7–10 mm, dark brown, rugose.

Distribution — Colombia (Amazonas, Caquetá, Vaupés), Venezuela ( Amazonas), Ecuador ( Napo, Sucumbios), Peru ( Loreto) and Brazil (Amazonas, Pará).

Habitat & Ecology — In non-inundated or periodically inundated forest (várzea, igapó), on clayey soil. At elevations of up to 300 m. Flowering: April, May, July, August, October; fruiting: June to February.

Vernacular names — Colombia: Buutruchicu (Muinane) ( Murillo A. et al. 518), Ñaatraje dujeku (Muinane) ( Murillo A. 619). Peru: Bara ( Rimachi Y. 3593).

Note — The majority of G. longicuspis plants studied is cauliflorous. The leaves are frequently oblong-elliptic in shape. The number of minute warts on the lamina varies greatly, the leaves ranging from densely to sparsely verruculose. The equally cauliflorous G. novogranatensis from Colombia ( Boyacá and Sur de Santander) differs from G. longicuspis by much larger sepals ( 10 –13 mm long and 5 –7 mm long, respectively).A third cauliflorous species, G. scalarinervia , is easily distinguished from G. longicuspis by the long petioles ( 15 –20 mm long and 2 – 5 mm long, respectively). It should be kept in mind, though, that the position of G. scalarinervia within this group is questionable. For further details, see under that species. The young monocarps of G. longicuspis are often pointed (hence Fries’s epithet), but the ripe ones are rounded.