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

publication ID

http://dx.doi.org/10.3897/phytokeys.72.9355

persistent identifier

http://treatment.plazi.org/id/D2817286-F3B9-ADF3-EDDD-DCCE8A6BD0CC

treatment provided by

PhytoKeys by Pensoft

scientific name

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

 

18. Miconia pedunculata Majure & Judd, J. Bot. Res. Inst. Texas. 7: 269. 2013.  Figs 22 A–EView Figure 22, 27 E–HView Figure 27

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. 21View Figure 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. 2View Figure 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 Río 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).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Myrtales

Family

Melastomataceae

Genus

Miconia

Loc

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

Majure, Lucas C., Becquer, Eldis R. & Judd, Walter S. 2016
2016
Loc

Ossaea polychaeta

Urb & Ekman 1931
1931
Loc

Ossaea polychaeta

Urb & Ekman 1931
1931
Loc

Ossaea polychaeta

Urb & Ekman 1931
1931
Loc

Ossaea polychaeta

Urb & Ekman 1931
1931
Loc

Ossaea polychaeta

Urb & Ekman 1931
1931
Loc

Ossaea polychaete

Urb & Ekman 1929
1929