Desmopsis biseriata G.E.Schatz & Maas, 2018

Schatz, G. E., Maas, P. J. M., Kamer, H. Maas-van de, Westra, L. Y. T. & Wieringa, J. J., 2018, Revision of the Neotropical genus Desmopsis (Annonaceae), Blumea 63 (1), pp. 67-86 : 71

2. Desmopsis biseriata G.E.Schatz & Maas , sp. nov. — Fig.1c ; Map 2

Desmopsis biseriata is recognized by its large leaves 17–42 by 9–17 cm, fruiting pedicels 20–25 mm long, basal and upper scale-like bracts, and by its relatively large monocarps (12–30 by 12–20 mm) with seeds arranged in two rows, borne on relatively long stipes (10–25 mm long). — Type: Nee & Hansen 14106 (holo MO), Panama, Bocas del Toro,on Fila Almirante,along trail to Risco Abajo, 3 km SW of town of Almirante , 100–200 m, 3 Jan. 1975 .

Tree or shrub 2.5–5 m tall, c. 5 cm diam; young twigs and petiole glabrous. Leaves: petiole 5–15 mm long, 1–2 mm diam; lamina elliptic, 17–42 by 9–17 cm, chartaceous, verruculose on both sides, glabrous above, glabrous below, except for some hairs along primary vein, base obtuse, apex obtuse to acuminate (acumen 10–15 mm long), primary vein impressed above, secondary veins 5–10 on either side of primary vein, raised above, tertiary veins slightly raised above, reticulate. Inflorescence and flower indument: pedicels and outer side of bracts sparsely covered with appressed hairs to glabrous. Inflorescences: flowers not seen. Infructescence bearing 1 fruit, leaf-opposed; fruiting pedicels 20–25 mm long, 2–4 mm diam; basal and upper bract scale-like, broadly ovate-triangular, 1–2 mm long. Monocarps 5–20, green to yellow, maturing dark purple, ellipsoid-oblongoid to spherical, 12–30 by 12–20 mm, glabrous, apex rounded, slightly constricted between the seeds upon drying, wall c. 0.5 mm thick, stipes 10–25 mm long, 1–2 mm diam. Seeds 2–14, in two rows, hemidiscoid or quartispherical, 9–12 by 6–8 by 3 mm, grooved and slightly pitted.

Distribution — Costa Rica, Panama.

Habitat & Ecology — In forest . At elevations of 0–600 m. Flowering: unknown; fruiting: July, October, December .

Vernacular names — Not recorded.

Other specimens examined. COSTA RICA, Limón, Talamanca, Bajo Telire, Río Telire , 400–600 m, Gómez P. 24132 ( MO) ; Hitoy Cerere reserve, SW of Valle La Estrella, ridge between Río Cerere and Quebrada Barrera , 150– 550 m, Grayum et al. 5814 ( MO) ; Cordillera de Talamanca , along ridge between Quebrada Camagre and Río Barbilla, 180–480 m, Grayum et al. 8906 ( MO) ; Reserva Indígena Talamanca Sukut, desembocadura del Río Sukut en el Río Urén , 350–550 m, Hammel et al. 17556 ( MO) . – PANAMA, Bocas del Toro, c. 15 km S of the town of Changuinola, vicinity of Changuinola 1 dam site, 900–1500 ft, Antonio 3140 ( MO) ; on hill above RR station at Milla, 7.5, Croat & Porter 16414 ( MO) ; Distr. Changuinola, a 1.5 km de la casa del Sr. Justo Perez, cerca Rancho Quemado , a orillas de la Quebrada Bonyic, 200 m, Hernández et al. 663 ( PMA) .

Note — Desmopsis biseriata can be recognized by its relatively large monocarps (12–30 by 12–20 mm) with seeds arranged in two rows, borne on relatively long stipes (10–25 mm long), combined with large leaves up to 42 cm long, and relatively short pedicels (20–25 mm long).

Figures

Fig. 1 a. Desmopsis bibracteata (B.L.Rob.) Saff. Flowering and fruiting branches. — b, d, e. Desmopsis brachypoda G.E.Schatz & Maas. b, d. Flowering branch; e. flowering and fruiting branches. — c. Desmopsis biseriata G.E.Schatz & Maas. Fruiting branch. — f. Desmopsis colombiana G.E.Schatz & Maas. Flowering branch (a: Schatz 1087; b. Monro & Cafferty 4904, type, MO; c. Nee & Hansen 14106, type, MO; d, e. Monro & Cafferty 4904; f. Maas et al. 10483). — Photos by: a. G.E. Schatz; d, e. A. Monro; f. P.J.M. Maas.