1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Acritopappus R.M.King & H.Rob.
      1. Acritopappus buiquensis D.J.N.Hind & Bautista

        This species is accepted, and its native range is Brazil (Pernambuco).

    [KBu]

    Hind, D.J.N. & Bautista, H.P. 2009. Acritopappus buiquensis (Compositae: Eupatorieae: Ageratinae),a new species from the brejo forests of Pernambuco State, Brazil. Kew Bulletin 64: 701. DOI: https://doi.org/10.1007/s12225-009-9142-2

    Type
    Brazil, Pernambuco. Mun. Buíque. Estrada Buíque – Catimbau, 799 m, 11 Jan. 1996, Andrade et al. 277 (holotypus PEUFR; isotypus K).
    Habit
    Small tree to c. 2 m tall
    Trunk
    Trunk very slender, branched only in upper part and then branches leafy and bearing terminal inflorescences; branches probably leafy throughout, opposite, decussate, at first striate to 6-angled, at first tomentose, tomentum of simple eglandular hairs, becoming glabrescent below and terete and striate; internodes 13 – 55 mm long
    Leaves
    Leaves opposite, decussate, simple, spreading, gradually decreasing in size upwards towards inflorescences, petiolate, petiole 5 – 12 mm long, pubescent only at node, hairs simple, eglandular; lamina base cuneate, lamina conduplicate, 27 – 80 × 14 – 40 mm, oval to ovate-acuminate, discolourous, slightly darker above (in dried material), shiny, matt beneath, midrib prominent beneath, margins serrulate except for basal portion, apices short acuminate
    Inflorescences
    Inflorescences terminal on branches, subcymose, many-headed, capitula sessile to subsessile or distinctly pedicellate, pedicels 0.5 – 4 mm long, tomentose, naked or with few glabrous, shiny and sticky bracteoles, bracteoles 4 – 4.5 × c. 0.5 mm, conspicuously 2-ribbed on either side of midrib, surface shiny and covered with glandular exudate, glabrous in upper part, very sparsely pubescent in lower part with simple hairs, margins entire, sometimes very sparsely ciliate in upper half, apices long-acute
    Capitulum
    Capitula homogamous, discoid; involucres campanulate, 5.5 mm tall × 3.5 mm diam., c. 2 – 3-seriate; phyllaries c. 5 × 1 – 1.2 mm, conspicuously 3 – 4-ribbed, surfaces glandular-punctate in upper half, appearing shiny with glandular-exudate, margins scarious, fimbriate to ciliate, apices short-attenuate; receptacle flat to slightly convex, glabrous, paleaceous; paleae 5 – 5.5 × c. 0.7 mm, scarcely keeled outside and not enclosing the subtending floret, margins fimbriate, more distinctly so in upper half, apices short attenuate
    Florets
    Florets c. 25, homogamous, hermaphrodite, actinomorphic, fertile; corollas whitish?; corolla tube gradually expanding upwards, c. 3 mm long × 0.6 – 0.8 mm diam., sparsely to moderately stipitate-glandular; corolla lobes 5, c. 0.5 mm long, apices acute, markedly thickened towards apices, mamillose outside; anthers included within corolla throat, anther collar flattened and expanded, apical anther appendages about as long as wide, apices usually retuse to emarginate, basal anther appendages rounded to obtuse; style c. 2 mm long, slightly expanded at base, glabrous throughout; style arms c. 2 mm long, short-papillose throughout
    Fruits
    Achenes c. 2 mm long, glabrous, 5-ribbed, ribs concolourous with black body, apex of achene confluent with pappus; carpopodium confluent with base of achene, asymmetric; pappus of highly variable length setae, 0.3 – c. 2.0 mm long, setae smooth, whitish
    Distribution
    The species is only known from Mun. Buíque, Pernambuco State.
    Ecology
    Brejo de altitude, amongst dense shrubby vegetation on orangish sandy soil adjacent to roadside. Some paratype notes also suggest ‘caatinga-campo’.
    Phenology
    Flowering time November – February or March, sometimes through until May.
    Conservation
    This species is best recorded as DD (Data Deficient) since no label information on abundance was provided.
    Note
    Acritopappusbuiquensis is most similar to the Bahian species A. prunifolius, and would key out as that species in King & Robinson’s key to the genus (King & Robinson 1980). Its leaves are glabrous, with evenly serrulate margins and strictly pinnate venation. However, the two differ markedly in several features. A. prunifolius is best considered densely leafy with the stem scarcely if ever visible beneath the inflorescence; it is clearly visible in A. buiquensis. In A. buiquensis the capitula are solitary and either sessile or distincly pedicellate whereas the capitula of A. prunifolius are usually condensed into many glomerules of several sessile capitula. Capitula of A. buiquensis have about 25 florets compared with an average five florets in A. prunifolius. The apical anther appendages in A. buiquensis are conspicuously retuse to emarginate whereas those of A. prunifolius are obtuse. Pappus form and presence in Acritopappus is extremely variable between species and indeed there is some variation in setae length in A. buiquensis on one achene but it is never reduced to a corona, and a range of seta sizes can be found in one pappus. In A. prunifolius the pappus is often reduced to a short corona, only rarely being present as short setae. The species is named after the town of Buíque near to where it was found.

    Distribution

    Native to:

    Brazil Northeast

    Acritopappus buiquensis D.J.N.Hind & Bautista appears in other Kew resources:

    First published in Kew Bull. 64(4): 701 (-704; fig. 1) (2010)

    Accepted by

    • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

    Literature

    Kew Bulletin
    • Porto, K. C., Cabral, J. J. P. & Tabarelli, M. (2004). Brejos de altitude em Pernambuco e Paraiba: historia natural, ecologia e conservação. Ministerio do MeioAmbiente, Brasilia.Google Scholar
    • Bautista, H. P., Ortiz, S. & Rodríguez-Oubiña, J. (2000). Acritopappusdiamantinicus (Asteraceae, Eupatorieae), a new species from Chapada Diamantina, Bahia, Brazil. Nord. J. Bot. 20 (2): 173 – 177.CrossRefGoogle Scholar
    • Hind, D. J. N. & Bautista, H. P. (2000). Two new species of Acritopappus (Compositae: Eupatorieae: Ageratineae) from Bahia, Brazil. Kew Bull. 55: 949 – 956.CrossRefGoogle Scholar
    • Sales, M. F., Mayo, S. J. & Rodal, M. J. N. (1998). Plantasvasculares das florestasserranas de Pernambuco: Um checklist da flora ameaçada dos brejos de altitude, Pernambuco, Brasil. ImprensaUniversitária, Universidade Federal Rural de Pernambuco, Recife.Google Scholar
    • Pereira, R. C. A., Lima, V. C., Silva, R. S. & Silva, S. Z. (1993). Lista das espéciesarbóreas e arbustivasocorrentesnosprincipais “brejos” de altitude de Pernambuco. Inst. Pesq. Agron. Série Documentos 22.Google Scholar
    • Mori, S. A. (1989). Eastern, Extra-Amazonian Brazil, pp. 427 – 454. In: D. G. Campbell & H. D. Hammond (eds), Floristic inventory of tropical countries: the status of plant systematics, collections, and vegetation, plus recommendations for the future. The New York Botanical Garden, New York.Google Scholar
    • Prance, G. T. (1989). American tropical forests, pp. 99 – 132. In: H. Lieth & M. J. A. Werger (eds), Ecosystems of the World. 14B Tropical rain forest ecosystems. Biogeographical and ecological studies. Elsevier, Amsterdam, Oxford, New York & Tokyo.Google Scholar
    • ____ & ____ (1987). The genera of the Eupatorieae (Asteraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 22.Google Scholar
    • Lyra, A. L. R. (1982). A condição de “brejo”: efeito do relevonavegetação de duasáreas do município do Brejo da Madre de Deus, Pernambuco. Universidade Federal Rural de Pernambuco, Recife. Dissertação de Mestrado.Google Scholar
    • Mayo, S. & Fevereiro, V. P. B. (1982). Mata de Pau Ferro, a pilot study of the brejo forests of Paraíba, Brazil. Royal Botanic Gardens, Kew.Google Scholar
    • ____ & ____ (1980). Studies in the Eupatorieae (Asteraceae). CLXXXIX. Additions to Acritopappus. Phytologia 45: 142 – 157.Google Scholar
    • ____ & ____ (1977). Studies in the Eupatorieae (Asteraceae). CLXVI. A new genus Scherya and additions to Acritopappus. Phytologia 38: 99 – 105.Google Scholar
    • King, R. M. & Robinson, H. (1972). Studies in the Eupatorieae (Asteraceae). CIX. A new genus, Acritopappus. Phytologia 24: 401 – 403.Google Scholar
    • Andrade-Lima, D. (1964). Esboçofitoecológico de algunsbrejos de Pernambuco. Bol. Técn. Inst. Pesq. Agron. Pernambuco 8: 3 – 10.Google Scholar

    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Bulletin
    Kew Bulletin
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0