Guatteria dotana N.Zamora & Erkens, 2015

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 : 73

52. Guatteria dotana N.Zamora & Erkens , sp. nov. — Fig. 24h , 33 ; Map 11

Ramulis novellis plusminusve fractiflexis pilis appressis dense obtectis, floribus breviter pedicellatis monocarpiis breviter stipitatis facile recognoscenda. — Typus: Estrada & Valverde 1084 (holo CR; iso MO), Costa Rica, San José, Tarrazu, Llanos de Santa María de Dota , Cerro Nene , Finca de Henry Marín , 900–1300 m, 19 Aug. 1997 .

Tree 4–7 m tall, diam not recorded; young twigs densely to rather densely covered with brown, appressed hairs, slightly zigzagging. Leaves: petiole 5–8 mm long, c. 2 mm diam; lamina narrowly oblong-elliptic, 10–21 by 3–8 cm (leaf index 2.6–3.3), coriaceous, not verruculose, shiny to dull, greyish green above, pale brown below, glabrous above, densely to sparsely covered with appressed, reddish hairs mainly along the primary vein below, base acute to obtuse, apex acuminate (acumen 5–15 mm long), primary vein flat to slightly raised above, secondary veins distinct, 11–17 on either side of primary vein, slightly raised above, smallest distance between loops and margin 2–3 mm, tertiary veins slightly raised above, reticulate. Flowers solitary in axils of leaves or on leafless branchlets; pedicels 0–7 mm long, c. 1 mm diam, fruiting pedicels 5–15 mm long, 2–4 mm diam, densely covered with appressed, pale brown hairs, articulated at 0.3–0.5 from the base, bracts 5–6, soon falling, not seen; flower buds ovoid; sepals free, broadly ovate-triangular, 6–8 by 5–7 mm, reflexed, outer side densely covered with appressed hairs; petals greenish to cream in vivo, ovate-elliptic, 7–12(–14) by 6–8 mm, outer side densely covered with appressed hairs; stamens c. 2 mm long, connec- tive shield hairy. Monocarps 15– 25, green, maturing purplish black in vivo, black in sicco, ellipsoid, 15–17 by 6–10 mm, glabrous, apex rounded, wall 0.1–0.2 mm thick, stipes 4–6 by 1 mm. Seed ellipsoid, 12–14 by 6–7 mm, dark, shiny brown, transversely grooved (to pitted), raphe raised.

Distribution — Costa Rica.

Habitat & Ecology — Wet forest (‘bosque muy húmedo’).At elevations of 500–1300 m. Flowering: February, May; fruiting: August, October.

Vernacular names — Not recorded.

Other specimens examined. COSTA RICA, Puntarenas, Buenos Aires, Colinas, Fila Retinto, parte alta de la Fila, 1017 m, 22 May 2012 (fl), Lobo 3343 (CR). San José, Dota,San Isidro, Cerro Tijerilla, 900–1000 m, 21 Oct. 1998 (fr), Estrada & Solano 1817 (CR, MO);Tarrazú,ZP Cerro Nara,Cuenca del Naranjoy Paquita, Dota, 2 km del cruce à Río Blanco, camino a San Isidro, 300–600 m, 27 Feb. 2005, Santamaría & Morales 682 (CR, L); Dota, Reserva Forestal Los Santos,Cuenca del Savegre,Quebrada Bomba,cruce a Fila Mona y La Bomba, 500 m, 28 Feb. 2005 (fl), Santamaría & Morales 757 (INB); Dota, Reserva Forestal Los Santos, Cuenca del Savegre, San Isidro de Dota, albergue Timaná, 800–900 m, 1 Mar. 2005, Santamaría & Morales 809 (CR, L).

Note — Guatteria dotana , endemic to Costa Rica, can be distinguished by zigzagging young twigs which are densely covered with appressed, brownish to reddish hairs, very shortly pedicellate flowers and shortly stipitate monocarps.

Figures

Fig. 24 a. Guatteria carchiana Maas & Westra. Flowers. – b. Guatteria chiriquiensis R.E.Fr. Fruit. – c. Guatteria citriodora Ducke. Fruit. – d, e. Guatteria conspicua R.E.Fr. d. Flowers; e. fruit. – f. Guatteria crassivenia N.Zamora & Maas. Detail of lower leaf surface. – g. Guatteria delicatula Maas & Westra. Flower pedicel with perianth and stamens gone. – h. Guatteria dotana N.Zamora & Erkens. Fruit (a: Vargas L. et al. 4242, isotype U; b: Zamora et al. 1461, U; c: Mori et al. 23673, U; d, e: Jonker-Verhoef & Jonker 494, U; f: Herrera C. & Chacón 2746, U; g: Solomon 9282, holotype U; h: Estrada & Solano 1817, MO).

Fig. 33 Guatteria dotana N. Zamora & Erkens. Fruiting branch (Estrada & Valverde 1084, isotype MO).