Taxon Details: Miconia campanensis Urb. & Ekman
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Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia campanensis Urb. & Ekman
Miconia campanensis Urb. & Ekman
Primary Citation:
Ark. Bot. 23A(11): 18. 1931
Ark. Bot. 23A(11): 18. 1931
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description Author and Date: Walter S. Judd, 2010, based on Judd, W. S. (2007). Revision of Miconia sect. Chaenopleura (Melastomataceae) in the Greater Antilles. Systematic Botany Monographs 81:1-235.
Type: DOMINICAN REPUBLIC. Prov. Santo Domingo [Prov. Monsenor Nouel]: Cordillera Central, Loma La Campana, high ridge, 1000 m elev., fl, 11 Feb 1929, E. L. Ekman H11514 (holotype: S!).
Description: Shrub to ca 1.5 m tall. Indumentum of multicellular, ferrugineous, long-stalked, dendritic-branched hairs, these intergrading (on hypanthium) with stellate-branched hairs, minute globular hairs, and long-stalked, gland-headed hairs (those on adaxial leaf surface with very thickened and persistent bases), to 0.9-1.25 mm long. Young twigs not ridged, ± rectangular in cross-section, 3-5 mm wide, becoming terete with age, the indumentum of dense multicellular, ferrugineous, long-stalked, dendritic-branched hairs, and scattered long-stalked, gland-headed hairs; internodes 1.7-5 cm long. Leaves with petiole 1.5-3.6 cm long, the indumentum dense, ferrugineous, long-stalked, dendritic-branched hairs, and sparse long-stalked, gland-headed hairs; blade 9-16.5 cm long, 2.5-5.6 cm wide, narrowly ovate to elliptic or oblong-elliptic, flat, coriaceous, the apex acute to acuminate, the base acute to obtuse, the margin plane, ± ciliate-toothed to base, ca 0% of margin entire, the obscure teeth each intergrading with a thick-based, long-stalked, gland-headed hair, these usually persistent; venation acrodromous, ± basal, with prominent midvein and 4 secondary veins, with 2 conspicuous secondary veins placed ca 4-10 mm in from margin, with 2 less conspicuous secondary veins closer to margin, and numerous percurrent tertiary veins oriented subperpendicular to midvein, the tertiary veins joined by percurrent-orthogonal quaternary veins; adaxial surface green, the indumentum of moderate, thick-based, long-stalked, gland-headed hairs, scattered minute globular hairs, and also a few ferrugineous, long-stalked, dendritic-branched hairs along basal portion of midvein (these initially scattered over surface, but quickly deciduous), the midvein and secondary veins clearly impressed, tertiary and quaternary veins (and sometimes even higher order veins) also impressed, thus delimiting raised areoles (especially toward margin), each containing 1 to few thick-based, long-stalked, gland-headed hairs, i.e., bullate with lamina surface intergrading with thick-based hairs, the surface minutely roughened to papillose after drying due to presence of numerous druse crystals; abaxial surface light green, moderately to densely covered with ferrugineous, long-stalked, dendritic-branched hairs, scattered with minute globular hairs, and sparsely covered with long-stalked, gland-headed hairs on midvein and secondary veins, moderate long-stalked, dendritic-branched hairs, scattered minute globular hairs, and sometimes a very few long-stalked, gland-headed hairs on higher order veins and lamina, all hairs ± persistent, the midvein and major secondary veins prominently raised, minor secondary and tertiary veins raised, quaternary veins slightly raised, higher order veins flat.
Description (cont.): Inflorescences many-flowered, open-paniculate cymes of 2-4 major branch-pairs, 4-9 cm long, 2-3.5 cm across; proximal segment of lowermost inflorescences branches 0.6-1.5 mm long, distal internodes of inflorescence branches increasingly shorter, ultimate branches 0.5-4 mm long, dense ferrugineous, long-stalked, dendritic-branched hairs, with scattered long-stalked, gland-headed hairs; peduncle 4-7.5 cm, with similar indumentum; each inflorescence branch associated with early caducous, ovate to obovate bract, ca 7-13 mm long, 2-4 mm wide, the apices acute to acuminate; flowers in dichasia (sometimes appearing as glomerate), each subtended by 2 caducous, narrowly ovate to obovate bracteoles, 6-11 mm long, 1.5-2.5 mm wide, the indumentum of sparse to moderate branched-dendritic hairs, minute globular hairs, and long-stalked, gland-headed hairs, their apices acute to acuminate. Flowers sessile or nearly so. Hypanthium cylindrical, free portion ca 1.7-1.9 mm long, the outer surface with sparse, ferrugineous, stalked dendritic-branched hairs, these intergrading with smaller ± stellate hairs, minute globular hairs, and long-stalked, gland-headed hairs, the inner surface glabrous and clearly 10-ridged, the apices of the ridges clearly projecting, to ca 0.25 mm. External calyx lobes 5, 0.7-1.5 mm long, 1.1-2.2 mm wide, triangular to broadly so, with apex acute to attenuate, indumentum of sparse to very sparse stalked dendritic-branched to stellate-branched hairs, minute globular hairs, and long-stalked, gland-headed hairs; internal calyx lobes 5, 1-1.9 mm long, 1.6-2.1 mm wide, broadly ovate-triangular, green, sometimes with reddish tinge, with sparse stellate-branched hairs and minute globular hairs, the apex rounded, but sometimes with 1 or 2 short lobes, the margin entire, but appearing minutely ciliate due to marginal hairs; calyx tube 0.2-0.4 mm long. Petals 5, 2.9-3.5 mm long, 2-3 mm wide, broadly elliptic, glabrous, white; margin entire. Stamens 10, geniculate; proximal segment 1-2 mm long; distal segment 2.6-3.2 mm long, essentially lacking dorsal projection, the anther ca 2.1-2.4 mm long, with fertile portion of anther sacs 1.7-2 mm long, the connective/distal part of filament extended 0.3-0.9 mm beyond the base of the anther. Ovary 5-loculate, 2/3-3/4-inferior, 2.2-3.4 mm long, 2.8-3.8 mm in diameter, short-ovoid to globose, glabrous and obscurely ridged, with apical projection to 0.15 encircling the base of style; style ca 4 mm long, glabrous; stigma truncate. Berries and seeds not seen.
Habitat and Distribution: Hispaniola (Dominican Republic), Cordillera Central and Sierra de Neiba; cloud forests; 1000-1500 m. Miconia campanensis may grow with M. jimenezii and M. zanonii; additional collections are needed.
Phenology: Flowering period is poorly known; perhaps flowering from February through May.
Taxonomy and Systematics: Miconia campanensis, a member of the bullate-leaved clade (see discussion under M. foveolata) and is one of the members of this group that has dendritic hairs on its abaxial leaf surfaces. Other species with dendritic hairs include M. howardiana, M. sintenisii, M. favosa, and M. xenotricha. Among these, it is probably most closely related to M. howardiana because both have thick-based, long-stalked, gland-headed to eglandular hairs on the adaxial lamina surface (vs. the lack of such hairs, at least in the adult leaves, in M. sintenisii, M. favosa, and M. xenotricha). Miconia campanensis is readily distinguished from M. howardiana by the characters listed in the key (see also Judd et al. 1995). Miconia campanensis, along with M. howardiana and M. sintenisii, has inflorescence bracts and bracteoles that are tardily deciduous, while the other related species have quickly caducous bracteoles. It is of interest that the leaves of M. campanensis are acute or obtuse but not cordate at the base, a likely reversal, as cordate-based leaves are frequent in the other members of the bullate-leaved clade. Miconia campanensis is restricted to the Cordillera Central and Sierra de Neiba of northern Hispaniola, and so is geographically isolated from M. howardiana, which is endemic to the vicinity of the Loma Trocha de Pey (= Monteada Nueva) in the easternmost Sierra de Baoruco of southern Hispaniola. Miconia campanensis has been poorly collected; it would be desirable to have fruiting collections in order to confirm my phylogenetically based prediction that the species has large berries.
Description Author and Date: Walter S. Judd, 2010, based on Judd, W. S. (2007). Revision of Miconia sect. Chaenopleura (Melastomataceae) in the Greater Antilles. Systematic Botany Monographs 81:1-235.
Type: DOMINICAN REPUBLIC. Prov. Santo Domingo [Prov. Monsenor Nouel]: Cordillera Central, Loma La Campana, high ridge, 1000 m elev., fl, 11 Feb 1929, E. L. Ekman H11514 (holotype: S!).
Description: Shrub to ca 1.5 m tall. Indumentum of multicellular, ferrugineous, long-stalked, dendritic-branched hairs, these intergrading (on hypanthium) with stellate-branched hairs, minute globular hairs, and long-stalked, gland-headed hairs (those on adaxial leaf surface with very thickened and persistent bases), to 0.9-1.25 mm long. Young twigs not ridged, ± rectangular in cross-section, 3-5 mm wide, becoming terete with age, the indumentum of dense multicellular, ferrugineous, long-stalked, dendritic-branched hairs, and scattered long-stalked, gland-headed hairs; internodes 1.7-5 cm long. Leaves with petiole 1.5-3.6 cm long, the indumentum dense, ferrugineous, long-stalked, dendritic-branched hairs, and sparse long-stalked, gland-headed hairs; blade 9-16.5 cm long, 2.5-5.6 cm wide, narrowly ovate to elliptic or oblong-elliptic, flat, coriaceous, the apex acute to acuminate, the base acute to obtuse, the margin plane, ± ciliate-toothed to base, ca 0% of margin entire, the obscure teeth each intergrading with a thick-based, long-stalked, gland-headed hair, these usually persistent; venation acrodromous, ± basal, with prominent midvein and 4 secondary veins, with 2 conspicuous secondary veins placed ca 4-10 mm in from margin, with 2 less conspicuous secondary veins closer to margin, and numerous percurrent tertiary veins oriented subperpendicular to midvein, the tertiary veins joined by percurrent-orthogonal quaternary veins; adaxial surface green, the indumentum of moderate, thick-based, long-stalked, gland-headed hairs, scattered minute globular hairs, and also a few ferrugineous, long-stalked, dendritic-branched hairs along basal portion of midvein (these initially scattered over surface, but quickly deciduous), the midvein and secondary veins clearly impressed, tertiary and quaternary veins (and sometimes even higher order veins) also impressed, thus delimiting raised areoles (especially toward margin), each containing 1 to few thick-based, long-stalked, gland-headed hairs, i.e., bullate with lamina surface intergrading with thick-based hairs, the surface minutely roughened to papillose after drying due to presence of numerous druse crystals; abaxial surface light green, moderately to densely covered with ferrugineous, long-stalked, dendritic-branched hairs, scattered with minute globular hairs, and sparsely covered with long-stalked, gland-headed hairs on midvein and secondary veins, moderate long-stalked, dendritic-branched hairs, scattered minute globular hairs, and sometimes a very few long-stalked, gland-headed hairs on higher order veins and lamina, all hairs ± persistent, the midvein and major secondary veins prominently raised, minor secondary and tertiary veins raised, quaternary veins slightly raised, higher order veins flat.
Description (cont.): Inflorescences many-flowered, open-paniculate cymes of 2-4 major branch-pairs, 4-9 cm long, 2-3.5 cm across; proximal segment of lowermost inflorescences branches 0.6-1.5 mm long, distal internodes of inflorescence branches increasingly shorter, ultimate branches 0.5-4 mm long, dense ferrugineous, long-stalked, dendritic-branched hairs, with scattered long-stalked, gland-headed hairs; peduncle 4-7.5 cm, with similar indumentum; each inflorescence branch associated with early caducous, ovate to obovate bract, ca 7-13 mm long, 2-4 mm wide, the apices acute to acuminate; flowers in dichasia (sometimes appearing as glomerate), each subtended by 2 caducous, narrowly ovate to obovate bracteoles, 6-11 mm long, 1.5-2.5 mm wide, the indumentum of sparse to moderate branched-dendritic hairs, minute globular hairs, and long-stalked, gland-headed hairs, their apices acute to acuminate. Flowers sessile or nearly so. Hypanthium cylindrical, free portion ca 1.7-1.9 mm long, the outer surface with sparse, ferrugineous, stalked dendritic-branched hairs, these intergrading with smaller ± stellate hairs, minute globular hairs, and long-stalked, gland-headed hairs, the inner surface glabrous and clearly 10-ridged, the apices of the ridges clearly projecting, to ca 0.25 mm. External calyx lobes 5, 0.7-1.5 mm long, 1.1-2.2 mm wide, triangular to broadly so, with apex acute to attenuate, indumentum of sparse to very sparse stalked dendritic-branched to stellate-branched hairs, minute globular hairs, and long-stalked, gland-headed hairs; internal calyx lobes 5, 1-1.9 mm long, 1.6-2.1 mm wide, broadly ovate-triangular, green, sometimes with reddish tinge, with sparse stellate-branched hairs and minute globular hairs, the apex rounded, but sometimes with 1 or 2 short lobes, the margin entire, but appearing minutely ciliate due to marginal hairs; calyx tube 0.2-0.4 mm long. Petals 5, 2.9-3.5 mm long, 2-3 mm wide, broadly elliptic, glabrous, white; margin entire. Stamens 10, geniculate; proximal segment 1-2 mm long; distal segment 2.6-3.2 mm long, essentially lacking dorsal projection, the anther ca 2.1-2.4 mm long, with fertile portion of anther sacs 1.7-2 mm long, the connective/distal part of filament extended 0.3-0.9 mm beyond the base of the anther. Ovary 5-loculate, 2/3-3/4-inferior, 2.2-3.4 mm long, 2.8-3.8 mm in diameter, short-ovoid to globose, glabrous and obscurely ridged, with apical projection to 0.15 encircling the base of style; style ca 4 mm long, glabrous; stigma truncate. Berries and seeds not seen.
Habitat and Distribution: Hispaniola (Dominican Republic), Cordillera Central and Sierra de Neiba; cloud forests; 1000-1500 m. Miconia campanensis may grow with M. jimenezii and M. zanonii; additional collections are needed.
Phenology: Flowering period is poorly known; perhaps flowering from February through May.
Taxonomy and Systematics: Miconia campanensis, a member of the bullate-leaved clade (see discussion under M. foveolata) and is one of the members of this group that has dendritic hairs on its abaxial leaf surfaces. Other species with dendritic hairs include M. howardiana, M. sintenisii, M. favosa, and M. xenotricha. Among these, it is probably most closely related to M. howardiana because both have thick-based, long-stalked, gland-headed to eglandular hairs on the adaxial lamina surface (vs. the lack of such hairs, at least in the adult leaves, in M. sintenisii, M. favosa, and M. xenotricha). Miconia campanensis is readily distinguished from M. howardiana by the characters listed in the key (see also Judd et al. 1995). Miconia campanensis, along with M. howardiana and M. sintenisii, has inflorescence bracts and bracteoles that are tardily deciduous, while the other related species have quickly caducous bracteoles. It is of interest that the leaves of M. campanensis are acute or obtuse but not cordate at the base, a likely reversal, as cordate-based leaves are frequent in the other members of the bullate-leaved clade. Miconia campanensis is restricted to the Cordillera Central and Sierra de Neiba of northern Hispaniola, and so is geographically isolated from M. howardiana, which is endemic to the vicinity of the Loma Trocha de Pey (= Monteada Nueva) in the easternmost Sierra de Baoruco of southern Hispaniola. Miconia campanensis has been poorly collected; it would be desirable to have fruiting collections in order to confirm my phylogenetically based prediction that the species has large berries.