Taxon Details: Miconia bullotricha Bécquer & Majure
Taxon Profile:
 | The Plant List |
 | International Plant Name Index |
 | Tropicos |
 | Catalogue of Life |
 | Global Biodiversity Information Facility |
 | JSTOR Types |
| JSTOR |
 | BHL |
 | Encyclopedia of Life |
 | WikiSpecies |
 | Google Scholar |
 | PubMed |
 | Morphbank |
 | IUCN |
 | National Center for Biotechnology Information |
 | Barcode of Life |
Narratives:
Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia bullotricha Bécquer & Majure
Miconia bullotricha Bécquer & Majure
Primary Citation:
Miconia bullotricha and M. hirtistyla, two new species of Miconia sect. Lima (Miconieae, Melastomataceae) from eastern Cuba
PhytoKeys 33: 61-75. 2014
Miconia bullotricha and M. hirtistyla, two new species of Miconia sect. Lima (Miconieae, Melastomataceae) from eastern Cuba
PhytoKeys 33: 61-75. 2014
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description Author and Date: Lucas C. Majure, Eldis R. Bécquer & Walter S. Judd modified from "Miconia bullotricha and M. hirtistyla, two new species of Miconia sect. Lima (Miconieae, Melastomataceae) from eastern Cuba". Majure, Lucas C., Bécquer, E.R. & Judd, Walter S.; Phytokeys 33: 61-75. 2014
Type: CUBA. Guantánamo: Palenque. Bernardo. Sierra del Frijol, Loma Bernardo, 800–900 m, 21 May 1983, Bisse J., Beurton C., Dietrich H., Gutiérrez J., Lepper L., Dolmus R., Köhler E., Rankin R., Arias I. HFC-49930 (holotype: HAJB!; isotypes: B 100362845!, HAJB!, JE!, NY!; Fig. 1).
Description: Evergreen shrub (height unknown); stems round in cross section, not ridged, the internodes 1.1–2.4 cm long; stems densely covered in bulla-based hairs with strongly to narrowly dilated bases, to 0.3 mm long, the hairs spreading to descending with apices recurved upwards, young stem hairs often dark purple in color; nodal line present, inconspicuous. Leaves opposite, decussate, elliptic to ovate-elliptic, often slightly falcate, 4.2–6 × 1–2.2 cm, often slightly anisophyllous, yellowish when dried; apex narrowly acute; base rounded to broadly cuneate or abruptly cuneate; margin revolute, dentate, the dentations obscure, each covered in one large, bulla-based hair, venation acrodromous, 3 (–5) veined, 1 primary vein and 1 (rarely 2) pairs of suprabasal secondary veins, often asymmetrical at union with midvein, produced 2–6 mm from the leaf base, positioned 0.7–3 mm in from margin at widest part of blade, the tertiary veins percurrent, ± perpendicular to midvein, 2–3 mm apart at mid-leaf, intertertiary veins present, often joined by quaternary veins; adaxial leaf surface with primary and secondary veins impressed, tertiary veins flat to slightly impressed, remaining veins flat, abaxial surface with primary, secondary and tertiary veins raised, the higher order veins ± flat to slightly raised (i.e., clearly visible to more or less obscure); adaxial leaf surface completely covered in erect bulla-based hairs, these fully expanded at the base, thus the lamina obscured, widest hair bases to 1.5 mm wide, hair apices acute to truncate, sometimes slightly recurved toward the leaf margin, sessile, glandular hairs occurring between the bases of bulla-based hairs; abaxial leaf surface nearly completely covered with bulla-based hairs with strongly to narrowly dilated bases, the lamina areoles not completely filled, the hairs along the epidermis erect with apices recurved or not, veins completely covered by spreading to erect hairs mostly with narrowly dilated bases and recurved apices, sessile, glandular hairs occurring throughout the lamina, as well as along veins; domatia inconspicuous, of multicellular, tufts of linear hairs present in the axils of the primary and secondary, as well as primary and tertiary veins; petiole 5–8 mm long, covered in spreading bulla-based hairs, those of the adaxial surface slightly longer and narrower than those of the abaxial surface and recurved towards to the leaf blade. Inflorescences terminal, well-developed to reduced cymes of 3–13 flowers, 2–3.5 × 1.8–3.4 cm, the flowers produced in 3–7 flowered dichasia, the peduncle 0.7–1.4 cm long, usually conspicuously reflexed at base, thus the entire inflorescence pendant, the proximal inflorescence branches 0.5–1 cm long; bracts oblong to narrowly ovate, 1.1–2 mm long; bracteoles narrowly ovate, ca. 0.5–0.7 × 0.2- 0.3 mm, glabrous or with small bulla-based hairs at base, bracteoles generally resembling one large, bulla-based hair. Flowers perfect, actinomorphic, 4-merous, with pedicels 0-1 mm long. Hypanthium ca. 1.6 × 2.8 mm, ± globose, slightly constricted below torus, abaxial surface covered in granulate, bulla-based hairs with dilated bases and attenuate to truncate apices, to 0.5 mm long, and sessile, glandular hairs, the free portion of hypanthium 0.5–0.7 mm long, adaxial surface longitudinally ridged and covered by bullabased hairs; calyx teeth 1.75–2.2 × 0.5 mm, linear and terete, recurved upon maturation, covered in bulla-based hairs; calyx lobes ± triangular, apex acute, ca. 1 × 1.3 mm, with bulla-based hairs abaxially and sessile, glandular hairs produced adaxially; calyx tube not tearing, ca. 0.4 mm long, with bulla-based hairs abaxially, sessile, glandular hairs adaxially and clavate-dendritic hairs produced at the apex; petals 4, (i.e., only seen in bud), ovate to elliptic with acute apices, apices with one, slightly bulla-based hair produced subapically, hair to 0.5 mm long; stamens 8 (immature), filaments glabrous, anthers ovate, with a well-developed dorso-basal appendage and one apically-oriented pore (the pore position could be an artifact of level of maturity); style (immature) dilated in the middle, subtended by a short crown of multicellular hairs, these only slightly longer than the surrounding bulla-based hairs on the ovary apex; stigma punctate; ovary ca. 1.4 × 2.4 mm, apex flat, with bulla-based hairs, 4 locular, with axillary placentation, the placenta deeply intruded into locule; berries (immature) globose, ca. 3–3.4 × 3 mm; seeds (immature) 0.2–0.6 mm long, obpyramidal, testa smooth, light brown, raphe extending the length of the seed, dark brown.
Distribution and ecology: Miconia bullotricha is endemic to eastern Cuba (province of Guantánamo; Fig. 2), where it occurs in semi-dry, montane and elfin forest on serpentine soils at elevations of 500–1000 m. Associated melastomes include Calycogonium grisebachii Triana, Miconia baracoensis Urb. and Ossaea pauciflora (Naudin) Urb.
Phenology: Plants with buds and young fruits have been collected in May.
Etymology: The specific epithet “bullotricha” refers to the well-developed bullabased hairs on the adaxial leaf surface. Although bulla is Latin in origin, we base formation of our compound epithet on the Greek rules for connecting vowels. Thus, we use “o” here instead of “i”, as we find “bullotricha” to be more euphonious than “bullitricha.” The connecting vowel “o” has had widespread usage in classical Latin based on the large influence of Greek (Stearn 1966).
Conservation Status: We do not have extensive knowledge of population level numbers of individuals or the reproductive biology of this species, so the conservation status of M. bullotricha cannot be critically evaluated at this time. More fieldwork is imperative to assess the status of this species. However, deforestation has occurred in the surrounding areas from where M. bullotricha is known, and thus, the species most likely should be considered threatened by habitat loss and other anthropogenic disturbances.
Taxonomy and Systematics: Miconia bullotricha likely belongs to a subclade within the Lima clade that contains the phenetically similar, Cuban endemic, M. ottoschmidtii, as well as other members of the M. lima complex (Majure et al. 2013b, Majure et al. unpubl. data). These species are recognized by their very well developed bulla-based hairs on the upper leaf surface (which mostly cover the leaf areoles), as well as expanded, pyramidal inflorescences consisting of cymose clusters of flowers subtended by highly reduced bracts. The only exception to this is M. pedunculata Majure & Judd of the Cordillera Central, Dominican Republic that has widely spaced bulla-based hairs on the adaxial leaf surface, which do not completely fill the leaf areoles, and flowers that are subtended by foliaceous bracts. As mentioned above, Miconia bullotricha is phenetically most similar to M. ottoschmidtii. However, the two species can be easily distinguished by stem and leaf indumentum, where M. bullotricha has the stem indumentum generally with apices attenuate and strongly recurved upwards, (as opposed to granulate with the apices truncate or short attenuate in M. ottoschmidtii; although it should be noted that central and northern Cuban populations of M. ottoschmidtii have a tendency towards stem hairs with longer, attenuate apices that may be recurved upwards), and erect bullabased hairs throughout the lamina and along the tertiary veins on the leaf abaxial surface (while M. ottoschmidtii has spreading to appressed bulla-based hairs throughout the lamina and along the tertiary veins of the leaf abaxial surface). Miconia bullotricha usually produces entirely pendant inflorescences, in contrast to the erect inflorescences of M. ottoschmidtii and the rest of the members of the subclade (however, several species often produce pendant basal inflorescence branches, including M. ottoschmidtii), and has longer calyx teeth than M. ottoschmidtii (1.75–2.2 vs. 0.4–0.8 mm). Also, M. bullotricha has globose floral buds, while M. ottoschmidtii exhibits quadrangular floral buds. Miconia bullotricha adheres to the morphological/phenetic and diagnostic species concepts (Judd 2007, Wheeler and Platnick 2000), and considering the putative autapomorphy of entirely pendant inflorescences, is likely a cladospecies (Donoghue 1985).
Description Author and Date: Lucas C. Majure, Eldis R. Bécquer & Walter S. Judd modified from "Miconia bullotricha and M. hirtistyla, two new species of Miconia sect. Lima (Miconieae, Melastomataceae) from eastern Cuba". Majure, Lucas C., Bécquer, E.R. & Judd, Walter S.; Phytokeys 33: 61-75. 2014
Type: CUBA. Guantánamo: Palenque. Bernardo. Sierra del Frijol, Loma Bernardo, 800–900 m, 21 May 1983, Bisse J., Beurton C., Dietrich H., Gutiérrez J., Lepper L., Dolmus R., Köhler E., Rankin R., Arias I. HFC-49930 (holotype: HAJB!; isotypes: B 100362845!, HAJB!, JE!, NY!; Fig. 1).
Description: Evergreen shrub (height unknown); stems round in cross section, not ridged, the internodes 1.1–2.4 cm long; stems densely covered in bulla-based hairs with strongly to narrowly dilated bases, to 0.3 mm long, the hairs spreading to descending with apices recurved upwards, young stem hairs often dark purple in color; nodal line present, inconspicuous. Leaves opposite, decussate, elliptic to ovate-elliptic, often slightly falcate, 4.2–6 × 1–2.2 cm, often slightly anisophyllous, yellowish when dried; apex narrowly acute; base rounded to broadly cuneate or abruptly cuneate; margin revolute, dentate, the dentations obscure, each covered in one large, bulla-based hair, venation acrodromous, 3 (–5) veined, 1 primary vein and 1 (rarely 2) pairs of suprabasal secondary veins, often asymmetrical at union with midvein, produced 2–6 mm from the leaf base, positioned 0.7–3 mm in from margin at widest part of blade, the tertiary veins percurrent, ± perpendicular to midvein, 2–3 mm apart at mid-leaf, intertertiary veins present, often joined by quaternary veins; adaxial leaf surface with primary and secondary veins impressed, tertiary veins flat to slightly impressed, remaining veins flat, abaxial surface with primary, secondary and tertiary veins raised, the higher order veins ± flat to slightly raised (i.e., clearly visible to more or less obscure); adaxial leaf surface completely covered in erect bulla-based hairs, these fully expanded at the base, thus the lamina obscured, widest hair bases to 1.5 mm wide, hair apices acute to truncate, sometimes slightly recurved toward the leaf margin, sessile, glandular hairs occurring between the bases of bulla-based hairs; abaxial leaf surface nearly completely covered with bulla-based hairs with strongly to narrowly dilated bases, the lamina areoles not completely filled, the hairs along the epidermis erect with apices recurved or not, veins completely covered by spreading to erect hairs mostly with narrowly dilated bases and recurved apices, sessile, glandular hairs occurring throughout the lamina, as well as along veins; domatia inconspicuous, of multicellular, tufts of linear hairs present in the axils of the primary and secondary, as well as primary and tertiary veins; petiole 5–8 mm long, covered in spreading bulla-based hairs, those of the adaxial surface slightly longer and narrower than those of the abaxial surface and recurved towards to the leaf blade. Inflorescences terminal, well-developed to reduced cymes of 3–13 flowers, 2–3.5 × 1.8–3.4 cm, the flowers produced in 3–7 flowered dichasia, the peduncle 0.7–1.4 cm long, usually conspicuously reflexed at base, thus the entire inflorescence pendant, the proximal inflorescence branches 0.5–1 cm long; bracts oblong to narrowly ovate, 1.1–2 mm long; bracteoles narrowly ovate, ca. 0.5–0.7 × 0.2- 0.3 mm, glabrous or with small bulla-based hairs at base, bracteoles generally resembling one large, bulla-based hair. Flowers perfect, actinomorphic, 4-merous, with pedicels 0-1 mm long. Hypanthium ca. 1.6 × 2.8 mm, ± globose, slightly constricted below torus, abaxial surface covered in granulate, bulla-based hairs with dilated bases and attenuate to truncate apices, to 0.5 mm long, and sessile, glandular hairs, the free portion of hypanthium 0.5–0.7 mm long, adaxial surface longitudinally ridged and covered by bullabased hairs; calyx teeth 1.75–2.2 × 0.5 mm, linear and terete, recurved upon maturation, covered in bulla-based hairs; calyx lobes ± triangular, apex acute, ca. 1 × 1.3 mm, with bulla-based hairs abaxially and sessile, glandular hairs produced adaxially; calyx tube not tearing, ca. 0.4 mm long, with bulla-based hairs abaxially, sessile, glandular hairs adaxially and clavate-dendritic hairs produced at the apex; petals 4, (i.e., only seen in bud), ovate to elliptic with acute apices, apices with one, slightly bulla-based hair produced subapically, hair to 0.5 mm long; stamens 8 (immature), filaments glabrous, anthers ovate, with a well-developed dorso-basal appendage and one apically-oriented pore (the pore position could be an artifact of level of maturity); style (immature) dilated in the middle, subtended by a short crown of multicellular hairs, these only slightly longer than the surrounding bulla-based hairs on the ovary apex; stigma punctate; ovary ca. 1.4 × 2.4 mm, apex flat, with bulla-based hairs, 4 locular, with axillary placentation, the placenta deeply intruded into locule; berries (immature) globose, ca. 3–3.4 × 3 mm; seeds (immature) 0.2–0.6 mm long, obpyramidal, testa smooth, light brown, raphe extending the length of the seed, dark brown.
Distribution and ecology: Miconia bullotricha is endemic to eastern Cuba (province of Guantánamo; Fig. 2), where it occurs in semi-dry, montane and elfin forest on serpentine soils at elevations of 500–1000 m. Associated melastomes include Calycogonium grisebachii Triana, Miconia baracoensis Urb. and Ossaea pauciflora (Naudin) Urb.
Phenology: Plants with buds and young fruits have been collected in May.
Etymology: The specific epithet “bullotricha” refers to the well-developed bullabased hairs on the adaxial leaf surface. Although bulla is Latin in origin, we base formation of our compound epithet on the Greek rules for connecting vowels. Thus, we use “o” here instead of “i”, as we find “bullotricha” to be more euphonious than “bullitricha.” The connecting vowel “o” has had widespread usage in classical Latin based on the large influence of Greek (Stearn 1966).
Conservation Status: We do not have extensive knowledge of population level numbers of individuals or the reproductive biology of this species, so the conservation status of M. bullotricha cannot be critically evaluated at this time. More fieldwork is imperative to assess the status of this species. However, deforestation has occurred in the surrounding areas from where M. bullotricha is known, and thus, the species most likely should be considered threatened by habitat loss and other anthropogenic disturbances.
Taxonomy and Systematics: Miconia bullotricha likely belongs to a subclade within the Lima clade that contains the phenetically similar, Cuban endemic, M. ottoschmidtii, as well as other members of the M. lima complex (Majure et al. 2013b, Majure et al. unpubl. data). These species are recognized by their very well developed bulla-based hairs on the upper leaf surface (which mostly cover the leaf areoles), as well as expanded, pyramidal inflorescences consisting of cymose clusters of flowers subtended by highly reduced bracts. The only exception to this is M. pedunculata Majure & Judd of the Cordillera Central, Dominican Republic that has widely spaced bulla-based hairs on the adaxial leaf surface, which do not completely fill the leaf areoles, and flowers that are subtended by foliaceous bracts. As mentioned above, Miconia bullotricha is phenetically most similar to M. ottoschmidtii. However, the two species can be easily distinguished by stem and leaf indumentum, where M. bullotricha has the stem indumentum generally with apices attenuate and strongly recurved upwards, (as opposed to granulate with the apices truncate or short attenuate in M. ottoschmidtii; although it should be noted that central and northern Cuban populations of M. ottoschmidtii have a tendency towards stem hairs with longer, attenuate apices that may be recurved upwards), and erect bullabased hairs throughout the lamina and along the tertiary veins on the leaf abaxial surface (while M. ottoschmidtii has spreading to appressed bulla-based hairs throughout the lamina and along the tertiary veins of the leaf abaxial surface). Miconia bullotricha usually produces entirely pendant inflorescences, in contrast to the erect inflorescences of M. ottoschmidtii and the rest of the members of the subclade (however, several species often produce pendant basal inflorescence branches, including M. ottoschmidtii), and has longer calyx teeth than M. ottoschmidtii (1.75–2.2 vs. 0.4–0.8 mm). Also, M. bullotricha has globose floral buds, while M. ottoschmidtii exhibits quadrangular floral buds. Miconia bullotricha adheres to the morphological/phenetic and diagnostic species concepts (Judd 2007, Wheeler and Platnick 2000), and considering the putative autapomorphy of entirely pendant inflorescences, is likely a cladospecies (Donoghue 1985).