Ameroglossum alatum E. M. Almeida, A. M. Wanderley & L. P. Felix 2021, sp. nov.
Creators
- 1. Laboratório de Citogenética e Evolução Vegetal, Departamento de Botânica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, CEP: 50670 - 901, Brazil
- 2. School of Molecular and Life Sciences, Curtin University, GPO Box U 1987, Perth WA 6845, Australia & Plant Gateway, 5 Baddeley Gardens, Bradford BD 10 8 JL, UK
- 3. Laboratório de Ecologia Vegetal Aplicada, Programa de Pós-Graduação em Biologia Vegetal, Universidade Federal de Pernambuco, CEP: 50372 - 970 Recife, Pernambuco, Brazil
- 4. Departamento de Geografia, Centro de Humanidade, Universidade Estadual da Paraíba, Campus III, CEP: 58200 - 000, Guarabira, Paraíba, Brazil
- 5. Universidade Estadual da Paraíba, Centro de Ciências Biológicas e da Saúde, Departamento de Biologia, Campus I, Rua das Baraúnas, 351, CEP: 58429 - 500 Campina Grande, Paraíba, Brazil
- 6. Instituto Nacional do Semiárido – INSA, Av. Francisco Lopes de Almeida, S / N, Bairro Serrotão, Campina Grande, Paraíba, CEP: 58429 - 970, Brazil
- 7. Departamento de Ciências Biológicas, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, CEP: 58397 - 000, Areia, Paraíba, Brazil
Description
Ameroglossum alatum E.M.Almeida, A.M.Wanderley & L.P.Felix sp. nov.
urn:lsid:ipni.org:names:77216325-1
Figs 2A, 3a–e
DiagnosisA species morphologically similar to A. manoelfelixii because it has glabrous to glabrescent, lustrous vegetative parts and inflorescences. However, A. alatum sp. nov. differs from this and other species of Ameroglossum, by having conspicuous membranous wings on the stem extending to the peduncle of the inflorescence and the pedicel (vs not or sparsely winged). Because of its green stems and leaves, A. alatum sp. nov. may also appear similar to A. bicolor sp. nov., although it differs by having its inflorescence in a simple dichasium (vs compound dichasium), winged peduncles and pedicels (vs partially winged) and the sepals not overlapping (vs sepals overlapping).
EtymologyThe name is derived from the Latin adjective ʻ alatus ʼ, ʻwingedʼ, referring to the conspicuous wings on the branches, peduncles and pedicels.
Material examinedType BRAZIL – Alagoas • Maravilha; 09°14ʹ39ʺ S, 37°19ʹ33ʺ W; 792 m a.s.l.; 21 Aug. 2012; E.M. Almeida & A.M. Wanderley 461; holotype: EAN!; isotype: K!.
DescriptionSaxicolous chamaephyte up to 80 cm, with secondary branching in the medial portion. Young branches greenish to slightly purplish, lustrous, quadrangular, conspicuously winged, glabrous; brownish when mature, slightly inclined, subquadrangular. Leaves opposite, decussate; leaf blade 3.5–6.0 × 1.5–2.5 cm, green with purplish margins, lustrous, elliptic to narrowly elliptic, slightly bullate; adaxial side glabrous; abaxial side with venation occasionally purplish, glabrescent with papillose trichomes, rarely aciculate; apex acute, rarely slightly caudate, reflexed; margin flat, occasionally revolute, ciliate. Inflorescence a simple dichasium. Peduncle purplish, frequently bifacial, subcylindrical, conspicuously winged, glabrescent, with papillose trichomes; primary peduncle 0.60–1.70 × 0.10–0.12 cm, secondary peduncle 0.20–0.80 × 0.06–0.07 cm. Pedicel 0.60–1.40 × 0.09–0.13 cm, greenish, frequently bifacial, glabrescent, with papillose trichomes; dorsal side conspicuously winged, ventral side with base slightly winged. Bracts 0.25–0.40 × 0.06 cm, slightly purplish, glabrescent, with papillose trichomes, margin glabrous. Calyx greenish, occasionally with reddish apex, abaxial side glabrous, adaxial side densely covered by papillose trichomes, margin glabrous; sepals lanceolate, dorsal ones 1.10–1.20 × 0.30–0.35 cm; lateral ones ca 1.0 × 0.2 cm; ventral ones ca 1.0 × 0.3 cm. Corolla 4.0– 4.5 cm long, orangish, externally pubescent, with papillose trichomes and/or glandular, internally glabrous; tube 2.8–3.3 cm long; upper lip 1.2–1.3 × 0.6 cm, slightly bilobate; lower lip 1.0–1.2 × 0.5 cm, inner perianth with filiform trichomes, white, lobes revolute, median lobe ca 0.10 × 0.13 cm. Stamens included, adnate to the middle of the corolla tube; filaments violet, ca 2.0 cm long; capsule ca 0.1 cm diam.; staminodium ca 0.6 cm long, adnate to the middle of the corolla tube, glabrous. Ovary 0.6–0.7 × 0.3 cm; style ca 4.6 cm long, exserted, glabrous. Capsule 1.5–1.7 × 0.7–0.9 cm, green. Seeds 0.10 × 0.05 cm.
DistributionCurrently known only from a single population on a granite outcrop near the city of Maravilha, in the Sertão Alagoano mesoregion, Alagoas State, Brazil. Elevation ca 790 m.
EcologyAs for the other taxa of Ameroglossum, A. alatum sp. nov. is restricted to granite outcrops, where it is probably pollinated by hummingbirds. Flowering and fruiting were recorded in August.
Population and threatsThe population is composed of approximately 20 adult individuals, restricted to an area of approximately 3000 m ² on one of the tops of this granite outcrop. The small population demonstrates elevated homozygosity, suggesting a low genetic diversity, probably caused by a founder and/or a genetic bottleneck effect (Wanderley et al. 2018).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- EAN
- Event date
- 2012-08-21
- Family
- Plantaginaceae
- Genus
- Ameroglossum
- Kingdom
- Plantae
- Order
- Lamiales
- Phylum
- Tracheophyta
- Scientific name authorship
- E. M. Almeida, A. M. Wanderley & L. P. Felix
- Species
- alatum
- Taxonomic status
- sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2012-08-21
- Taxonomic concept label
- Ameroglossum alatum Almeida, Wanderley & Felix, 2021
References
- Wanderley A. M., Machado I. C. M., Almeida E. M., Felix L. P., Galetto L., Benko-Ippeson A. M. & Sork V. L. 2018. The roles of geography and environment in divergence within and between two closely related plant species inhabiting an island-like habitat. Journal of Biogeography 45: 381 - 393. https: // doi. org / 10.1111 / jbi. 13137