Desmopsis colombiana 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 : 72

publication ID	https://doi.org/10.3767/blumea.2018.63.01.07
persistent identifier	https://treatment.plazi.org/id/3E2187B4-F553-FFD4-FFF8-F923FA2EFB58
treatment provided by	Felipe
scientific name	Desmopsis colombiana G.E.Schatz & Maas
status	sp. nov.

Treatment

4. Desmopsis colombiana G.E.Schatz & Maas View in CoL , sp. nov. — Fig. 1f View Fig , 2a View Fig ; Map 1 View Map 1

Desmopsis colombiana is recognized by its relatively short pedicels (10–30 mm long) bearing scale-like basal and upper bracts, small, reflexed sepals (1–2 by 1–2 mm), and a small number of monocarps (2–4) with 1–3 seeds. — Type: Cogollo 893 (holo MO), Colombia, Antioquia, San Luis, Parque ecológico, Cañón del Río Claro , sector nor-oriental, margen derecha, 325– 475 m, 28 Oct. 1983 .

Shrub or tree 3–12 m tall,diam not recorded;young twigs and petiole rather densely covered with appressed hairs, soon glabrous. Leaves: petiole 5–10 mm long, c. 2 mm diam; lamina narrowly elliptic to elliptic, sometimes narrowly ovate-elliptic, 11–20 by 4–8 cm, chartaceous, shiny and glabrous above, subglabrous below, base acute to obtuse, apex acuminate (acumen 5–20 mm long), primary vein impressed above, secondary veins 8–10 on either side of primary vein, raised above, tertiary veins raised above, reticulate. Inflorescence and flower indument: pedicels, outer side of bracts, sepals and petals sparsely to rather densely covered with appressed hairs. Inflorescences 1–3-flowered (sometimes up to 15-flowered), leaf-opposed; flowering and fruiting pedicels 10–30 mm long, 0.5–1 mm diam; basal and upper bract scale-like, broadly ovate, 1–2 mm long; sepals broadly ovate-triangular, 1–2 by 1–2 mm, reflexed; petals yellow, subequal, narrowly triangular, 15–30 by 3–5 mm, margins revolute. Monocarps 2–4, maturing red, spherical to ellipsoid, 13–20 by 12–20 mm, sparsely covered with appressed hairs, soon glabrous, apex rounded, slightly constricted between the seeds upon drying, wall c. 0.5 mm thick, stipes 5–15 mm long, c. 1 mm diam. Seeds 1–3, in one row, spherical, discoid or hemispherical, 10–11 by 3–6 mm, grooved.

Distribution — Colombia (Antioquia).

Habitat & Ecology — In forest . At elevations of 300–600 m. Flowering: June, July, September, October; fruiting: January, March, July, September, October .

Vernacular names — Not recorded.

Other specimens examined. COLOMBIA, Antioquia, San Luis,Parque ecológico, Cañón del Río Claro , 350–475 m, Cogollo & Borja 477 ( MO) , 325– 360 m, Cogollo & Borja 507 ( MO) , 330–400 m, Cogollo & Borja 741 ( MO) , 340–500 m, Cogollo 1080 ( MO) , 325 m, Cogollo & Borja 1220 ( MO) , 325–500 m, Cogollo 1438 ( MO) , 350–400 m, Cogollo 1469 ( MO) ; Río Claro,carretera al Cairo , 600 m, Rentería A. & Cogollo 2745 ( MO) ; Reserva Natural Río Claro , trail up steep slope , 449 m, Maas et al. 10483 ( COL) .

Notes — Desmopsis colombiana occurs in the Río Claro region in Antioquia. It is characterized by minute, scale-like bracts, relatively short pedicels (10–30 mm long), few monocarps (2–4), and small sepals (1–2 mm long).

In some of the collections we found old remnants of pedicels which showed up to 15 flowers or more ( Cogollo 1080)!