Guatteria paludosa 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 : 127-129

117. Guatteria paludosa R.E.Fr. — Fig. 54c, d , 57 ; Map 26

Guatteria paludosa R.E.Fr. (1948a) 231. — Type: Forest Department British Guiana 3781 = Fanshawe 1045 (holo K 2 sheets; iso FDG, NY), Guyana, Mahdia River , Potaro River , miles 107 of Bartica-Potaro Road, common by creeks in Kataburi ( Rapatea ) swamp, 18 Jan. 1943.

Tree 8–25 m tall, 15–50 cm diam; young twigs densely covered with appressed hairs, soon glabrous. Leaves: petiole 15–30 mm long, 3–4 mm diam, strongly thickened at the base; lamina narrowly elliptic, 32–53 by 8–14 cm (leaf index 2.4–3.7), chartaceous, scabridulous, greyish brown above, brown below, glabrous on both sides, base long-attenuate, apex acuminate (acumen 10–45 mm long), primary vein impressed above, secondary veins distinct, 15–27 on either side of primary vein, impressed above, smallest distance between loops and margin 2–3 mm, tertiary veins inconspicuous, flat above, reticulate to percurrent. Flowers in 1(–2)-flowered inflorescences in axils of leaves or on leafless branchlets;pedicels 5–15 mm long, c. 1 mm diam, fruiting pedicels to c. 3 mm diam, densely covered with appressed hairs, articulated at 0.2–0.3 from the base, bracts 5– 6, soon falling or rarely present before anthesis, elliptic to narrowly elliptic, 7–13 mm long; flower buds depressed ovoid, slightly pointed; sepals free, broadly to shallowly ovate-trian- gular, 5–7 by 7–10 mm, reflexed, outer side densely covered with appressed hairs; petals yellow or cream in vivo, oblong-obovate, 15–40 by 7–16 mm, outer side densely covered with appressed hairs; stamens 2–3 mm long, connective shield papillate to hairy. Monocarps 10–30, green, maturing purple-black in vivo, black in sicco, ellipsoid, 18–20 by 10–11 mm, gla- brous, apex apiculate (apiculum broadly conical, hard, <1 mm long), wall c. 0.5 mm thick, stipes 5–8 by 1.5–2 mm. Seed ellipsoid, 14–17 by 9–10 mm, red-brown, rugulose, raphe not distinct from rest of seed.

Distribution — Guyana.

Habitat & Ecology — In non-inundated, mixed rain forest, usually along creeks, sometimes on steep hills, on lateritic soil. At elevations of 0– 600 m. Flowering: May, June; fruiting: January, March, June, October.

Vernacular name — Guyana: Smooth skin arara (Arawak name).

Notes — Guatteria paludosa , a narrow endemic of Guyana, looks superficially like a member of sect. Mecocarpus (where it was also placed by Fries 1948a), but the leaves are scabridu- lous rather than verruculose.

For the differences with G. anteridifera , a species occurring in French Guiana and the adjacent Brazilian state of Amapá, see under that species.

Figures

Fig. 54 a. Guatteria oriximinae Maas & Westra. Fruit. – b. Guatteria pachycarpa Erkens & N.Zamora. Monocarp in cross section. – c, d. Guatteria paludosa R.E.Fr. c. Flowers;d. flower buds and bracts. – e. Guatteria procera R.E.Fr. Fruit. – f. Guatteria revoluta Maas & Westra. Rvolute leaf base, fruit and incomplete flower. – g. Guatteria rigida R.E.Fr. Fruit. – h. Guatteria ruboides Maas & Westra. Fruit (a: Cid et al. 9654, U; b: G. Herrera C. 5227, U; c, d: McDowell et al. 4815, U; e: Sperling et al. 6227, U; f: Vásquez & Jaramillo 8024, isotype U [sheet 2]; g: Anderson et al. 106, U; h: Vásquez & Jaramillo 8025, isotype AAU).

Fig. 57 Guatteria paludosa R.E.Fr. Fruiting habit (Redden et al. 2243, U).