Miconia pedunculata Majure & Judd, J. Bot. Res. Inst. Texas. 7: 269. 2013.

Majure, Lucas C., Becquer, Eldis R. & Judd, Walter S., 2016, Revision of the Lima clade (Miconia sect. Lima, Miconieae, Melastomataceae) of the Greater Antilles, PhytoKeys 72, pp. 1-99 : 68-71

18. Miconia pedunculata Majure & Judd, J. Bot. Res. Inst. Texas. 7: 269. 2013. Figs 22A-E , 27E-H

Ossaea polychaeta Urb. & Ekm,. Ark. Bot. 23A(11): 27. 1931. Type: DOMINICAN REPUBLIC. Cordillera Central, Domingo, [Prov. Monseñor Nouel], Loma la Campana, ca. 1000 m, 2 Feb 1929, E.L. Ekman H11522 (lectotype: S! [S-R-1003], designated here; isolectotypes: EHH n.v., K! [K000535603], NY! [NY00099709]).

Ossaea urbaniana Alain, Brittonia 20: 158. 1968, nom. illeg. superfl. (nom. nov. for Ossaea polychaeta Urb. & Ekman, non Ossaea polychaete Urb. & Ekman) Type: Based on Ossaea polychaeta Urb. & Ekman

Leandra polychaeta (Urb. & Ekm.) Alain, Sida 18: 1026. 1999. Type: Based on Ossaea polychaeta Urb. & Ekman

Leandra urbaniana (Alain) Alain, Sida 20: 1645. 2003, nom. illeg., later homonym of Leandra urbaniana Cogn. (1886) Type: Based on Ossaea polychaeta Urb. & Ekman

Type.

Based on Ossaea polychaeta Urb. & Ekman, non Miconia polychaeta Wurdack

Description.

Evergreen shrub, 1-2 m tall; stems round in cross section, not ridged, the internodes 0.7-8.5 cm long, stem indumentum of relatively sparse, ascending bulla-based hairs to 6.1 mm long, and black, sessile glandular hairs; nodal line present. Leaves opposite, decussate, elliptic, broadly elliptic to almost orbicular, or ovate, 1.4-7.6 × 1-5.9 cm, slightly anisophyllous, apex broadly acute, base rounded to cordate or uncommonly acute, venation acrodromous, 7-9-veined, the midvein and 3-4 pairs of arching secondary veins, veins often purplish on abaxial leaf surface, secondary veins mostly basal, although the innermost pair oftentimes suprabasal, produced 1.5-13 mm from leaf base, positioned 5-14 mm in from margin at widest point of blade, tertiary veins percurrent, more or less perpendicular to midvein, 1.3-4.3 mm apart at midleaf, intertertiary veins absent, tertiary veins sometimes joined by quaternary veins; adaxial leaf surface covered in lateral rows of bulla-based hairs, the rows formed by the production of hairs between tertiary veins, hairs not completely covering lamina areoles, widest hair bases to 1.7 mm, apices of bulla-based hairs mostly recurved, abundant, sessile, glandular hairs produced along the primary, secondary, and tertiary veins, as well as along the bases of bulla-based hairs, these sometimes stipitate along primary and secondary veins; abaxial leaf surface covered in sparse, bulla-based hairs, these restricted to the primary, secondary, tertiary, and quaternary veins, thus the lamina clearly visible, lamina appearing as a series of pits from depressions of the bulla-based hairs produced from the upper leaf surface, sessile, glandular hairs produced along higher and lower order veins, as well as throughout the lamina; petioles 0.4-3.4 cm long, covered in sparse, bulla-based hairs, as well as sessile, glandular hairs (same as the stem). Inflorescences terminal, cymose with flowers forming cymose, glomerulate clusters at the apices of long inflorescence branches making them appear long, pedunculate, 13-17 flowered, 3.2-6.4 × 3.8-5.2 cm, the peduncle absent to 0.5 cm long, inflorescence branches 15-45 mm long, pedicels absent (flowers sessile); bracts foliaceous, mostly ovate to elliptic, 5 -10 mm long; bracteoles obovate, 6-7 × 1.6-2.5 mm, ab- and adxial surface covered in bulla-based hairs. Flowers 4-6-merous, sessile; hypanthium 2.6-3.5 mm long, oblong, slightly 4-lobed, slightly to strongly constricted below the torus, free portion of the hypanthium 0.9-1 mm long, abaxial surface covered in bulla-based hairs 4.4 mm long, and abundant, sessile, glandular hairs; adaxial surface (i.e., free portion) covered in bulla-based hairs and sessile, glandular hairs; calyx teeth 3.2-3.6 × 0.3-0.4 mm, mostly spreading, covered in ascending bulla-based hairs; calyx lobes more or less triangular, 1.5-2 × 1.7-2.1 mm, apex rounded, covered in bulla-based and sessile, glandular hairs abaxially and sessile, glandular hairs adaxially; calyx tube not tearing, 1.1-1.3 mm long with bulla-based hairs abaxially and sessile, glandular hairs adaxially; petals 4-5, white or pinkish, narrowly elliptic to oblong, 4.8-5 × 1.9-2 mm, with an acute apex, with one slightly bulla-based hair produced abaxially, just below the apex, to 1.2 mm long; stamens 8-10; filaments 2-2.3 mm long, glabrous, anthers 1.2-1.3 mm long, with one apical to slightly dorsally inclined pore, anther thecae 1.1-1.2 mm long, anthers without a dorso-basal appendage; style 4.9-5.6 mm long, glabrous, dilated in the middle, collar absent, style subtended by a crown of multicellular, triangular hairs, mostly fused at the base, stigma punctate; ovary 1.5-2.4 × 1.1-3 mm, apex flat to concave, glabrous, except for the linear or elongate-triangular hairs forming crown, placentation axile with deeply intruded placenta, 5-locular; berries globose, 4-lobed, purple at maturity, 6.8 mm long (including calyx tube), 7 mm wide, seeds 0.6-0.7 mm long, obpyramidal, biconvex, testa smooth, light brown, raphe light brown, smooth, extending the length of the seed.

Phenology.

This species has been collected in flower and fruit from May through December. However, flower buds are present on the type specimen, which was collected in February, as well as on Majure 6053 also collected in Februrary, so this species likely flowers throughout most of the year.

Distribution

(Fig. 21 ). Miconia pedunculata is restricted to the Cordillera Central, Dominican Republic.

Ecology.

Miconia pedunculata occurs in broadleaved, moist, cloud forests from 1000-2240 m in elevation. Some associate melasomes are Mecranium puberulum , Meriania involucrata , Miconia crotonifolia (Desr.) Judd & Ionta, Miconia lima , Miconia paralimoides , Miconia tetrastoma , Miconia umbellata , Sagraea fuertesii and Sagraea oligantha (Urb.) Alain.

Conservation status.

Although this species apparently can tolerate a range of anthropogenic disturbance (according to label data) and also occurs within a scientific reserve in a portion of its distribution, it is of limited distribution in the Cordillera Central, Dominican Republic, and not terribly abundant where it is found. Thus, we assign a preliminary status of vulnerable to Miconia pedunculata .

Discussion.

The northern populations of Miconia pedunculata (e.g., those at the Reserva Científica Ébano Verde) are morphologically differentiated from the southern populations (e.g., from Prov. Peravia), and can be recognized by the less well-developed bulla-based hairs on the adaxial leaf surface, and their more densely pubescent abaxial leaf surfaces. However, the minor morphological differences in these two geographically disjunct groups of populations appear to merely represent variation within a single species. Accessions of Miconia pedunculata from both of these regions form a well-supported clade in phylogenetic analyses of the group ( Majure et al. 2015; Fig. 2 ).

Although the name Ossaea polychaeta was validly published, Alain Liogier superfluously coined the name Ossaea urbaniana Alain ( Liogier 1968) as a way of distinghishing Ossaea polychaeta (= Miconia pedunculata ) from Ossaea polychaete Urb. & Ekman (= Miconia polychaete (Urb. & Ekman) Ionta et al.), a species of the Sagraea clade ( Ionta et al. 2012) endemic to Massif de la Hotte, what he incorrectly considered to be merely an orthographic variant of the specific epithet. He later transferred Ossaea polychaeta to Leandra polychaeta ( Liogier 1999), and then further transferred Ossaea urbaniana to Leandra urbaniana ( Liogier 2003), creating a later homonym for the already existing Leandra urbaniana Cogn. Majure and Judd (2013) coined the name Miconia pedunculata for Ossaea polychaeta , as the binomial Miconia polychaeta Wurdack ( Wurdack 1972) already existed for an Andean species from the Cuzco region of Peru.

Specimens examined.

DOMINICAN REPUBLIC: Prov. La Vega. Cordillera Central: Reserva Cientifica Ébano Verde, 2237 m, 28 May 2003, Acevedo-Rodriguez 12638 (JBSD); La Vega. sobre Loma Golondrina , 19°03'N, - 70°33'O, 1400-1565 m, 29 May 1992, Zanoni 46124 (FLAS, JBSD, MO, S); Loma de la Sal, SE of Jarabacoa, E of Paso Bajito, ca. 1200 m, 26 May 1992, Judd 6633 (FLAS, JBSD); Loma de la Sal, SE of Jarabacoa, E of Paso Bajito, 19°04'N, - 70°34'O, 1350-1440 m, 27 May 1992, Zanoni 45942 (FLAS, JBSD, NY); Prov. Monseñor Nouel. Cordillera Central, Municipio Constanza, Reserva Científica Ébano Verde, Loma Alto Casabito, en el sendero bajando justo duspués del mirador; 19.04034°N, - 70.51817°W; 1398 m, 12 Feb 2016, Majure 6053 (DES, FLAS, JBSD, NYBG, USMS); Cordillera Central: Reserva Cientifica Ébano Verde), Alto Casibito, along Rt. 12 between Bonao & Constanza at Summit, at the tower/visitor lookout, 19°02'43 ’’ N - 70°31'26"W, 1445 m, 1 Jul 2000, Skean 4103 (ALBC, FLAS, JBSD)(note: label specifies this collection in Prov. La Vega); en la Loma Alto de Casabito , 1/ 1 km al N del paso del Casabito (cruce Abanico de Bonao-La Palma-El Rio de Constanza ), 19°2.5'N, - 70°31.5'O, 1350-1400 m, 22 Jun 1992, Zanoni 46527 (FLAS, JBSD)(note: label specifies this collection in Prov. La Vega). Prov. Peravia. Loma Valvacoa (Balbacoa), subida por ladera S.E. de la loma desde cañaveral, 18°28'N, 70°20.5'O, 1440-1700 m, 17 Mar 1993, Jiménez 860 (FLAS, JBSD); El Tope " (la cima) de la Loma Rodríguez, 18°26'N, - 70°18'O, 1320-1510 m, 29 Dec 1983, Zanoni 28291 (JBSD, NY). Prov. San José de Ocoa. Cordillera Central, Loma del Rancho , SE de San José de Ocoa, 18°29'N, - 70°27.5'O, 1300-1400 m, 19 Aug 1987, Pimentel 806 (FLAS, JBSD, MO, S); en las cimas de Loma del Rancho , al SE de San José de Ocoa, subida por el lado de “Tumbaca,” 18°31'N, - 70°28'O, 1350-1400 m, 14 Aug 1987, Zanoni 40212 (FLAS, JBSD, MO, NY, US).

Figures

Figure 2. Maximum Parsimony 50 % majority rule phylogeny of selected members of the Lima, Calycopteris, Calycodomatia, Pseudolima, and Paralima clades (modified from Majure et al. 2015). Miconia umbellata and Miconia blancheana were used as outgroup taxa. Bootstrap values from both maximum parsimony / maximum likelihood analyses are given above branches.

Figure 21. Distribution of Miconia marigotiana (closed star), Miconia lima (closed circles), Miconia pedunculata (open circles) and Miconia pagnolensis sp. nov. (open star).

Figure 22. Miconia pedunculata (A-E) and Miconia limoides (F-H). A habit of Miconia pedunculata (Pimentel 806) B bracteole (Zanoni 40212) C flower (Judd 6633) D petal abaxial surface (Zanoni 28291) E stamen (Zanoni 28291) F petal abaxial surface of Miconia limoides (Zanoni 18900) G stamen (Zanoni 18900) H fruit longitudinal section (Ekman 9579).

Figure 27. Photos of Miconia paralimoides (A-D) and Miconia pedunculata (E-H). A habit of Miconia paralimoides showing well-developed bulla-based hairs on leaf adaxial surface B infructescence of Miconia paralimoides C leaf abaxial surface showing obscured epidermis and ascending, appressed hairs on petioles D mature fruit of Miconia paralimoides (all from Majure 6021) E habit and adaxial leaf surface of Miconia pedunculata F abaxial leaf surface showing dark purple primary and secondary veins G terminal, glomerulate inflorescence of Miconia pedunculata showing large bracts subtending floral buds and long, ascending hairs on inflorescence axis and stems H reddish-pink floral bud of Miconia pedunculata (all from Majure 6053). All photos taken by L. C. Majure.