Taxon Details: Miconia tonduzii var. serrulata Cogn.
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Narratives:
Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia tonduzii var. serrulata Cogn.
Miconia tonduzii var. serrulata Cogn.
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description Author and Date: Frank Almeda, based on Almeda, F. (2009). Melastomataceae. In: G. Davidse, M. Sousa-Sânchez, S. Knapp, & F. Chiang (eds.), Flora Mesoamericana: Cucurbitaceae a Polemoniaceae. 4(1): 164-338.
Type: Holotype: Costa Rica, Pittier 2393 (BR!).
Description: Shrubs or small trees 2-5(-9) m tall, juvenile leaves and vegetative buds sparsely and deciduously furfuraceous-puberulent to glabrate. Leaves 3-nerved or 3-plinerved, often with a depressed pair of intramarginal veins, elliptic, 6-12 X 2-4 cm, adaxially glabrous, abaxially sparsely and inconspicuously lepidote, apex gradually acuminate to caudate-acuminate, base acute, the margin conspicuously serrulate; petioles 1-3 cm long. Panicle 4-10 cm long; flowers 5(-6)-merous on pedicels 0.25-0.5 mm long, the deciduous elliptic bracteoles 2-3.5 mm long. Hypanthia obscurely and deciduously puncticulate-lepidote but appearing glabrous; calyx tube 0.25 mm long, the oblong apically rounded lobes 0.5-0.7(-1) mm long, the tuberculate teeth 0.5-0.7 mm long, appressed to and not exceeding the lobes. Petals obovate, glabrous, 1.5-2.5 X 1.5-2 mm. Stamens isomorphic; anthers 4-celled, cuneate, 1-1.5 mm long, white, the broad pore ventrally inclined; connective thickened dorso-basally into a blunt lobe or spur but ventro-basally adnate to the thecae to form a bilobulate appendage. Style glabrous, 5 mm long; stigma capitate; ovary 3-locular, 1/2 inferior, apex shallowly fluted and sparingly glandular-puberulent to glabrate; berry 5-6 X 5-6 mm, blue-gray or blue-violet at maturity. Seeds ovoid, obscurely rugulate or granulate, 0.5 mm long.
Habitat and Distribution: Locally common, elfin forest, cloud forest. 400-2200 m. NICARAGUA (Robleto 1138, CAS); COSTA RICA (Almeda & Daniel 7096, CAS).
Taxonomy and Systematics: Nicaraguan populations (Pipoly 5955 and 6042) from Cerro La Pimienta (Zelaya) and Pipoly 5164 from Cerro El Hormiguero (Zelaya) superficially resemble this variety in having elliptic leaf blades that are sparsely lepidote abaxially but the foliar margins are obscurely serrulate and the anthers on the meager material available for study appear to be 2-celled. Study of the few flowers on Pipoly 6042 are also suggestive of dioecism. If examination of better material confirms this observation, these puzzling collections should be compared with M. glaberrima (Schltdl.) Naudin of southern Mexico and northern Central America.
Notes: [Description based only on Mesoamerican specimens.]
Description Author and Date: Frank Almeda, based on Almeda, F. (2009). Melastomataceae. In: G. Davidse, M. Sousa-Sânchez, S. Knapp, & F. Chiang (eds.), Flora Mesoamericana: Cucurbitaceae a Polemoniaceae. 4(1): 164-338.
Type: Holotype: Costa Rica, Pittier 2393 (BR!).
Description: Shrubs or small trees 2-5(-9) m tall, juvenile leaves and vegetative buds sparsely and deciduously furfuraceous-puberulent to glabrate. Leaves 3-nerved or 3-plinerved, often with a depressed pair of intramarginal veins, elliptic, 6-12 X 2-4 cm, adaxially glabrous, abaxially sparsely and inconspicuously lepidote, apex gradually acuminate to caudate-acuminate, base acute, the margin conspicuously serrulate; petioles 1-3 cm long. Panicle 4-10 cm long; flowers 5(-6)-merous on pedicels 0.25-0.5 mm long, the deciduous elliptic bracteoles 2-3.5 mm long. Hypanthia obscurely and deciduously puncticulate-lepidote but appearing glabrous; calyx tube 0.25 mm long, the oblong apically rounded lobes 0.5-0.7(-1) mm long, the tuberculate teeth 0.5-0.7 mm long, appressed to and not exceeding the lobes. Petals obovate, glabrous, 1.5-2.5 X 1.5-2 mm. Stamens isomorphic; anthers 4-celled, cuneate, 1-1.5 mm long, white, the broad pore ventrally inclined; connective thickened dorso-basally into a blunt lobe or spur but ventro-basally adnate to the thecae to form a bilobulate appendage. Style glabrous, 5 mm long; stigma capitate; ovary 3-locular, 1/2 inferior, apex shallowly fluted and sparingly glandular-puberulent to glabrate; berry 5-6 X 5-6 mm, blue-gray or blue-violet at maturity. Seeds ovoid, obscurely rugulate or granulate, 0.5 mm long.
Habitat and Distribution: Locally common, elfin forest, cloud forest. 400-2200 m. NICARAGUA (Robleto 1138, CAS); COSTA RICA (Almeda & Daniel 7096, CAS).
Taxonomy and Systematics: Nicaraguan populations (Pipoly 5955 and 6042) from Cerro La Pimienta (Zelaya) and Pipoly 5164 from Cerro El Hormiguero (Zelaya) superficially resemble this variety in having elliptic leaf blades that are sparsely lepidote abaxially but the foliar margins are obscurely serrulate and the anthers on the meager material available for study appear to be 2-celled. Study of the few flowers on Pipoly 6042 are also suggestive of dioecism. If examination of better material confirms this observation, these puzzling collections should be compared with M. glaberrima (Schltdl.) Naudin of southern Mexico and northern Central America.
Notes: [Description based only on Mesoamerican specimens.]