Desmopsis nigrescens G.E.Schatz, 2018
|
publication ID |
https://doi.org/10.3767/blumea.2018.63.01.07 |
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persistent identifier |
https://treatment.plazi.org/id/3E2187B4-F55A-FFDC-FFF8-FA7AFE26FEBF |
|
treatment provided by |
Felipe |
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scientific name |
Desmopsis nigrescens G.E.Schatz |
| status |
sp. nov. |
16. Desmopsis nigrescens G.E.Schatz View in CoL , sp. nov. — Fig. 2d View Fig , 3b View Fig ; Map 2
Desmopsis nigrescens is recognized by its relatively large glabrous lamina (15–30 by 5–14 cm) that dry black,relatively long pedicels (20–60 mm long, to c. 80 mm in fruit) bearing a large, leafy basal bract and scale-like upper bract, and relatively large sepals (4–10 by 3–6 mm) that are accrescent (expanding to 22 by 14 mm) and often persistent in fruit. — Type: Liesner 1038 (holo MO; iso F, NA, NY), Panamá, Colón, 10 mi SW of Portobelo, 2–4 mi from coast, 10–200 m, 24 Mar. 1973 .
Tree 2–12 m tall, c. 6 cm diam; young twigs and petioles glabrous. Leaves: petiole 3–11 mm long, 2–3 mm diam; lamina generally drying black, narrowly elliptic to elliptic, sometimes narrowly obovate, 15–30 by 5–14 cm, coriaceous, glabrous above, glabrous below, except for some scattered hairs along primary vein, base acute to obtuse, apex acuminate (acumen 10–25 mm long), primary vein impressed above, secondary veins 9–12 on either side of primary vein, raised above, tertiary veins raised above, reticulate. Inflorescence and flower indument: outer side of bracts glabrous, pedicels and outer side of sepals sparsely to rather densely covered with brown, curly hairs, outer side of petals rather densely to sparsely covered with appressed hairs. Inflorescences 1- or 2-flowered, leaf-opposed; pedicels 20–60 mm long, c. 1 mm diam, to c. 80 mm long and 1–3 mm diam in fruit; basal bract leafy, broadly ovate, 15–50 by 10–50 mm, upper bract scale-like, broadly ovate-triangular, c. 1 mm long; sepals ovate-triangular, 4–10 by 3–6 mm at anthesis, accrescent and often persistent in fruit, expanding to c. 22 by 14 mm; petals pale green, maturing yellow, subequal, narrowly triangular, 17–25 by 4–6 mm. Monocarps 10–25, green, yellow, yellow-orange, orange, to red-black, oblongoid-ellipsoid to subspherical, 9–25 by 8–15 mm, glabrous, apex rounded, slightly constricted between the seeds upon drying, wall 0.5–1 mm thick, stipes 7–35 mm long, 1–2 mm diam. Seeds 2–6, in one row, discoid or hemispherical, 7–12 by 2–5 mm, strongly grooved.
Distribution — Panama.
Habitat & Ecology — In primary rain forests. At elevations of 0–750 m. Flowering: January to May; fruiting: January to March, June, July, November.
Vernacular names — Not recorded.
Other specimens examined. PANAMA, Coclé, area between Caño Blanco del Norte, Caño Sucio and Chorro del Río Tife, 200–400 m, Davidse & Hamilton 23556 (MO); El Valle, 800–1000 m, Duke 13184 (MO); La Pintada, Parque Nacional G.D. Omar Torrijos, 158 m, Martínez 1354 (PMA);between Río Blanco and Caño Susio 1 hr hike to the west, Río Blanco is c. 5 hr hike north down from the continental Divide above El Copé and El Petroso saw- mill, 350–400 ft, Sytsma et al. 2491 (MO). Colón, Proyecto Minero Cobre Panama, 116 m, Batista 304 (PMA); en la carretera a la zona de Santa Rita, Correa et al. 1822 (PMA); San Juan del General, de Gracia 779 (MO); East Ridge, Duke 15278 (MO); Donoso, helipat C02, 124 m, Espinosa 5711 (MO); Donoso, Belen, 47 m, Espinosa 5963 (MO); Río Buenaventura, near Portobello, Foster 1694 (DUKE);Aguacate, 0–200 ft, Hammel 4433 (MO,U); Teck Cominco Petaquilla mining concession, 184 m, McPherson 19564 (MO, PMA,WAG), idem, 11 m, McPherson 20042 (MO), idem, 300 m, McPherson 20610 (MO, PMA, WAG),idem, 50 m, McPherson 20636 (MO, PMA,WAG); Río Guanche, Mori & Kallunki 3013 (MO);Santa Rita Ridge Road, 18–20 km from Transisthmian Hwy, 100–1200 ft, Sytsma 2042 (MO); Cerro La Gloria, Nombre de Dios, Valdespino et al. 432 (PMA, U); Teck Cominco Petaquilla mining concession, 296 m, van der Werff & McPherson 22210 (MO, WAG). Panama, Cerro Jefe region, c. 1.5 miles along Río Pacora road from junc- tion with Cerro Jefe road, 750 m, McPherson & Merello 8129 (MO, U). San Blas, 12 miles from Pan-American Highway on Cartí Road, 1100 ft, Antonio 4850 (MO, U); El Llano-Cartí road, km 12.2, 350 m, De Nevers & Herrera 4348 (MO, PMA), Km 26.5, De Nevers et al. 5281 (MO); trail to Cerro Óbu (Habu of maps) from Río Urgandi (Río Sidra), 100–300 m, De Nevers et al. 7976 (MO); road from El Llano to Cartí, Pacific side, 200–300 m, Hamilton & Stockwell 2940 (MO); 8.2 miles from the Pan-American Highway on the El Llano-Cartí road, 450 m, Knapp 5899 (MO); along El Llano-Cartí-Tupile road, 10–12 km N of the Interamerican Hwy, 500 m, Luteyn & Wilbur 4659 (DUKE, F, MO); boundary trail on Llano-Cartí road, 350 m, McPherson & Merello 8168 (MO); near El Llano-Cartí road, NW of Nusagandi on Sendero Wedar, 150–250 m, McPherson 11054 (MO,U); El Llano-Cartí Road, 5 miles from highway, 350 m, McPherson 11281 (MO). Veraguas, along banks of first river on road between Alto Piedra School and Río Colovebora, 1.8 miles beyond School, 500 m, Croat 34104 (MO).
Note — Desmopsis nigrescens is very well marked by its large leaves (15–30 by 5–14 cm) drying black (hence the specific name), and relatively large sepals (to 22 by 14 mm in fruit) which are often persistent in fruit. It might be confused with D. maxonii , which, however, has smaller, non-accrescent sepals (3–8 by 3–6 mm) that are not persistent in fruit. Moreover, D. nigrescens occurs at lower elevations (0–750 m) than D. maxonii (600–2000 m).
| MO |
Missouri Botanical Garden |
| F |
Field Museum of Natural History, Botany Department |
| NA |
United States National Arboretum, USDA/ARS |
| NY |
William and Lynda Steere Herbarium of the New York Botanical Garden |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.