Miconia paralimoides Majure & Judd,

Majure, Lucas C. & Judd, Walter S., 2013, Miconia paralimoides (Miconieae: Melastomataceae), a new species from the Cordillera Central, Dominican Republic, Phytotaxa 131 (1), pp. 9-16: 10-13

publication ID

http://doi.org/ 10.11646/phytotaxa.131.1.2

persistent identifier

http://treatment.plazi.org/id/03B38C6A-FFFE-FFC4-FF0A-8EEA39656D4D

treatment provided by

Felipe

scientific name

Miconia paralimoides Majure & Judd
status

sp. nov.

Miconia paralimoides Majure & Judd  sp. nov. (sect. Lima) ( Fig. 1View FIGURE 1)

Diagnosis: Species ab haec Miconia limoides differt  indumento caulium ascendenti appresso (non declinato, effuso vel recurvo) et indumento foliorum appresso in pagina abaxiali (non effuso vel erecto).

Type:— DOMINICAN REPUBLIC. Cordillera Central, Provincia La Vega, Constanza, 1.5 hora caminando a pie al sur de Loa Mañanguises, en el lugar llamado Sonador, 18°53’N, 70°36’Oeste, 1300 m, fr., 12 abril 1986, R. García  1186 (holotype FLAS!; isotypes JBSD!, MO!, NY!, S!, US!) ( Fig. 1View FIGURE 1)GoogleMaps  .

Evergreen shrub, 1–3 m tall; stems round in cross section, not ridged, the internodes 0.4–8.9 cm long, stem indumentum of bulla-based hairs 0.1–1.3 mm long, these ascending (antrorse) appressed, mostly arcuate with the tips bent towards the stem axis, making the stem appear smooth; nodal line present, with larger bullabased hairs than those on the rest of the stem. Leaves opposite, decussate, broadly elliptic to obovate, 2.7–5.5 × 1.7–3.8 cm, slightly anisophyllous, apex widely acute to rounded, base acute to rounded, venation acrodromous, 5–7 veined, the midvein and 2–3 pairs of arching secondary veins, the outermost intramarginal, secondary veins mostly basal to slightly suprabasal, the innermost pair, ± asymmetrical at union with midvein, produced 0.3–4 mm from leaf base, positioned 3–7 mm in from margin at widest point of blade, tertiary veins percurrent, ± perpendicular to midvein, 1.5–2.9 mm apart at midleaf, intertertiary veins present, tertiary veins often joined by quaternary veins; adaxial leaf surface covered in well developed bulla-based hairs completely filling the areoles, bases of bulla-based hairs strongly angular (mostly 4–5 angular) produced from the separation of one hair from another, widest hair bases to 2.2 mm, apices of bulla-based hairs mostly erect, young leaf adaxial surface producing long-stemmed, clavate-dendritic hairs along the primary, secondary, and tertiary veins from between the bulla-based hairs, sessile, glandular hairs produced along the primary, secondary, tertiary, and quaternary veins between the bulla-based hairs, especially toward the base of the leaf; abaxial leaf surface covered in bulla-based hairs, these strongly appressed, those along the primary, secondary, and tertiary veins larger than hairs produced throughout the lamina, the lamina completely covered in bullabased hairs and thus obscured, lamina appearing as a series of pits from depressions of the bulla-based hairs produced from the upper leaf surface and slightly raised intertertiary veins, sessile, glandular hairs produced from between the bulla-based hairs; petioles 0.4–1.7 cm long, covered in appressed-ascending, bulla-based hairs on both surfaces. Inflorescences terminal, of condensed-short cymes, 5–15 flowered, 0.9–2.8 × 1.2–2.8 cm, the peduncle 0.05–1.5 cm long, proximal inflorescence branches 2–8 mm long, pedicels absent to 1.2 mm long; bracts oblong to ovate, 2.6–4.9 mm long; bracteoles narrowly ovate, 1.7–3.8 × 0.3–0.6 mm. Flowers mostly produced in glomerulate clusters, sessile or with pedicels to 1.2 mm long, 4–5(6) merous, when 4 or 5 merous, sometimes with one or two calyx teeth apparently aborted; hypanthium 2.9–3.5 mm long, shortoblong to globose, 4-lobed, but lobing mostly obscured by bulla-based hairs, slightly constricted below the torus, free portion of the hypanthium 0.8–1.1 mm long, hypanthium abaxial surface covered in bulla-based hairs from 0.8–2.6 mm long, and occasional, sessile, glandular hairs near the bases of the bulla-based hairs; hypanthium adaxial surface (i.e., free portion) covered in small, bulla-based hairs; calyx teeth 2.9–4.2 × 0.8– 0.9 mm, ascending or spreading, covered in bulla-based hairs; calyx lobes acute, 1.3–1.6 × 1.5–2 mm, covered in bulla-based hairs abaxially and sessile, sparse, glandular hairs adaxially; calyx tube not tearing, 0.1–0.4 mm long with bulla-based hairs abaxially and sessile, glandular hairs adaxially; petals 4–5(6), red to violet-red, elliptic with an acute apex and membranous margin, 4.5–7 × 2.6–3.6 mm, with one or two slightly bulla-based hairs produced abaxially, just below the apex, to 2.8 mm long; stamens twice the number of petals, 8–10(12); filaments 1.8–2.8 mm long, glabrous, anthers 1.5–1.6 mm long, with one dorsally oriented pore, anther thecae 1.2–1.4 mm long, anthers with a dorso-basal appendage 0.18–0.3 mm long; style 5.0– 5.3 mm long, glabrous, not or only slightly dilated in the middle, collar absent, style subtended by a crown of multicellular, linear to elongate-triangular (needle-like) hairs, which are slightly longer than the surrounding bulla-based hairs of the ovary apex, stigma punctate; ovary 1.6–2.2 × 2.4–3.4 mm, slightly four lobed, apex pubescent with bullabased hairs, except for the linear or elongate-triangular hairs forming crown, placentation axile with deeply intruded placenta, 4-locular; berries globose, 4-lobed, purple at maturity, 4–5.5 mm long (including calyx tube), 5.5–7 mm wide, seeds 0.8–1mm long, obpyramidal, often falcate, testa smooth, light brown, raphe dark brown, smooth, extending the length of the seed.

Relationships with other taxa and species concepts: — Of all of the members of the M. lima  complex, M. paralimoides  is likely most closely related to M. lima  and M. limoides  , as all three species have very welldeveloped bulla based hairs on the adaxial leaf surface (see Fig. 1BView FIGURE 1), which more or less entirely fill the leaf areoles and comparable leaf shapes and floral morphology. Miconia marigotiana  has ovate, narrowly elliptic to elliptic-rhomboid leaves and 2-carpellate ovaries, which differ from the broadly elliptic to obovate leaves and 4-carpellate ovaries of M. paralimoides  , and M. phrynosomaderma  exhibits bulla-based hairs on the adaxial leaf surface that do not completely cover the areoles, as well as clawed petals and descending stem hairs ( Majure & Judd 2013). Liogier (2000) considered populations of M. paralimoides  to represent M. lima  , although using his key, material of M. paralimoides  is identifiable to M. limoides  . Nearly all collections of M. paralimoides  , except for those of Liogier, have been identified as M. limoides  by previous collectors. Miconia paralimoides  shares the ascending-appressed stem hairs ( Fig. 1AView FIGURE 1) and longer (0.18–0.3 mm in M. paralimoides  and 0.25–0.4 mm in M. lima  ) dorso-basal anther appendages with M. lima  ( Figs 1GView FIGURE 1 & 2DView FIGURE 2). However, M. paralimoides  is phenetically most similar and may be more closely related to M. limoides  , as it shares the shaggy, long, hypanthium hairs (longest to 2.6 mm in M. paralimoides  , 3 mm in M. limoides  ; Figs. 1D & HView FIGURE 1, & 2J–KView FIGURE 2), large fruit (4–5.5 mm × 5–7 mm in M. paralimoides  , 3.9–7 × 5–9 mm in M. limoides  ), bulla-based hairs with sharp-angled bases on the adaxial leaf surface (rather than the generally smooth-angled to rounded bases of the bulla-based hairs in M. lima  ; Fig. 1BView FIGURE 1), the more robust growth form, a more tightly overlapping leaf length/width quotient (1.2–1.6 in M. paralimoides  and 1.0– 1.8 in M. limoides  ), as compared to M. lima  (see below), a very dense indumentum of bulla-based hairs mostly obscuring the lamina of the abaxial leaf surface ( Fig. 1CView FIGURE 1), and longer petal hairs than M. lima  ( Figs. 1D–FView FIGURE 1, 2HView FIGURE 2).

This species is easily distinguished from M. limoides  in having ascending-appressed, arcuate stem hairs ( Fig. 1AView FIGURE 1), as well as dense, appressed, bulla-based hairs on the abaxial leaf surface ( Fig. 1CView FIGURE 1). The stem hairs of M. limoides  are descending-appressed to spreading and slightly recurved at the tips and the dense, abaxial leaf surface hairs are erect to spreading. Miconia paralimoides  has a dorso-basal anther appendage 0.18–0.3 mm long ( Fig. 1GView FIGURE 1), while M. limoides  lacks or only has a poorly developed dorso-basal appendage to 0.1 mm long ( Fig. 2IView FIGURE 2).

Miconia paralimoides  is distinguished from M. lima  by its densely pubescent abaxial leaf surface with strongly appressed hairs ( Fig. 1CView FIGURE 1). It also differs from M. lima  by the leaf length/width quotient (1.5–2.6 for M. lima  vs. 1.2–1.6 for M. paralimoides  ), longer overall bulla-based hairs of the hypanthium (to 2.6 mm in M. paralimoides  vs. 1.5 mm in M. lima  ; Figs. 1HView FIGURE 1 & 2E–FView FIGURE 2), larger fruit (4–5.5 mm × 5–7 mm in M. paralimoides  vs. 2–3.5 mm × 3–4.1 mm in M. lima  ), longer petals (4.5–7 mm vs. 3–4.3 mm; Figs. 1D–FView FIGURE 1 & 2–CView FIGURE 2), and longer average petal hairs (2.6 mm vs. 1.1 mm; Figs. 1View FIGURE 1 & 2View FIGURE 2).

Miconia paralimoides  is morphologically diagnosable from its putative closest relative M. limoides  ( Fig. 2View FIGURE 2) and their ranges are allopatric, thus satisfying the morphological-phenetic ( Judd 2007) and diagnostic ( Wheeler & Platnick 2000) species concepts. The two species also are presumably reproductively isolated.

Etymology:— As stated above, Miconia paralimoides  is most phenetically similar to M. limoides  , and the specific epithet “ paralimoides  ” is meant to reflect this similarity. Miconia paralimoides  , has, by most collectors, been identified as M. limoides  .

Distribution and Habitat:— Miconia paralimoides  is restricted to the Cordillera Central of the Dominican Republic, while its putative sister species, M. limoides  , is restricted to southern Hispaniola, occurring in the Massif de la Selle and the Sierra de Bahoruco ( Fig. 3View FIGURE 3). The species occurs in humid, broad leaved, mixed forests or cloud forests from 1000–1950 m in elevation. Some associate species include Brunellia comocladifolia Bonpland (1808: 211  ; Brunelliaceae  ), Lyonia buchii Urban (1921: 515  ; Ericaceae  ), Magnolia pallescens Urban & Ekman  (1931: 10; Magnoliaceae  ), Myrsine coriacea (Swartz) Browne (1819: 511  ; Primulaceae  ), Ocotea floribunda Bentham & Hooker (1880: 158  ; Lauraceae  ), Tabebuia vinosa Gentry (1989: 137  ; Bignoniaceae  ), as well as other species of Miconia  . Miconia lima  is sympatric with M. paralimoides  .

Phenology: — Miconia paralimoides  has been collected in bud, at anthesis and in immature fruit from September through December, and has been collected in immature and mature fruit from February through April.

Additional specimens examined: Dominican Republic. LA VEGA. Cordillera Central, Municipio Jarabacoa, Distrito Municipal Manabao , Los Tablones , al pie de la Subida de La Cotorra, Parque A. Bermudez ; UTM 301221 E  , 2107542N, 21 Feb 2011, Clase 6739 ( FLAS, JBSD). Reserva Científica Ébano Verde, en el camino viejo entre la caseta principal (a la orilla del Arroyo La Sal), y la cima de Loma Golondrina, 19°04'N, 70°34'O, 12 Mar 1992, F. Jiménez 176– A ( JBSD)GoogleMaps  . Ciénaga de la Culata, Constanza, 15– 16 Oct 1968, Liogier 13013 ( NY, US). Loma Redonda, Ciénaga de la Culata, Constanza, 12 Sept 1969, Liogier 15998 ( GH, NY, P, US). Municipio de Constanza, Loma el Paragua, en el lugar denominado el Chiflito , 19°00'06.8' N  , 70°43'39.6"O, 10 Nov 2006, Veloz 4059 ( JBSD). SANTIAGO RODRÍGUEZ, Cordillera Central, Parque Nacional J. C. Ramírez, entre Monte Llano & Los Descansaderos, 19°14'N, 71°17'O, 10 Jul 1988, Zanoni 41982 ( FLAS, JBSD, NY)GoogleMaps  .

R

Departamento de Geologia, Universidad de Chile

FLAS

Florida Museum of Natural History, Herbarium

JBSD

Jardín Botánico Nacional Dr. Rafael M. Moscoso

MO

Missouri Botanical Garden

NY

William and Lynda Steere Herbarium of the New York Botanical Garden

S

Department of Botany, Swedish Museum of Natural History

E

Royal Botanic Garden Edinburgh

A

Harvard University - Arnold Arboretum

GH

Harvard University - Gray Herbarium

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

N

Nanjing University

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Myrtales

Family

Melastomataceae

Genus

Miconia

Loc

Miconia paralimoides Majure & Judd

Majure, Lucas C. & Judd, Walter S. 2013
2013
Loc

Miconia paralimoides

Majure & Judd 2013
2013
Loc

M. limoides

Majure & Judd 2013
2013