1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Senecio L.
      1. Senecio albus J.N.Nakaj. & A.M.Teles

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

    [KBu]

    Teles, A.M., Nakajima, J.N. & Stehmann, J.R. 2009. Senecio albus, a new species of Senecio sect. Adamantina (Senecioneae – Asteraceae) with an emendment to the section. Kew Bulletin 64: 161. DOI: https://doi.org/10.1007/s12225-008-9090-2

    Type
    Brazil, Minas Gerais, São Roque de Minas, Parque Nacional da Serra da Canastra, 19 km da sedeadministrativa, ladodireito da estrada para Sacramento, 28 June 1994, Romero & Nakajima 1069 (holotypus HUFU; isotypi BHCB, SPF, UEC, US).
    Habit
    Perennial herbs to 1.5 m tall
    Roots
    Roots fibrose
    Stem
    Stem simple, striate, medullated, with dense indumentum of white arachnoid trichomes, densely foliose basally and scarcely so apically
    Leaves
    Leaves gradually smaller apically, sessile, semi-amplexicaul, the blades elliptic-lanceolate to lanceolate, 3.5 – 10.8 cm long, 1.2 – 3.4 cm wide, apex obtuse, base auriculate, penninervate, secondary veins abaxially reticulate, densely white-tomentose on both sides, the margin sparsely crenate-dentate with obtuse teeth
    Inflorescences
    Capitulescence terminal, paniculiform with corymbiform, densely white-tomentose axes
    Capitulum
    Capitula homogamous, discoid, pedunculate; peduncles 1 – 4 mm long, bracteolate, white-tomentose; bracteoles lanceolate to linear-lanceolate, 3 – 4 mm long, densely white-tomentose. Involucre cupuliform, 5 – 7 mm long, 3 – 4 mm wide, canaliculate; bracts of the calycule c. 4, lanceolate, 3 – 3.5 mm long; involucral bracts 7 to 8, lanceolate, 4.7 – 5 mm long, 1 – 1.5 mm wide, with apex acute and penicillate and scarious margin, glandulose-punctate to glabrescent abaxially; receptacle plane and pilose
    Florets
    Florets 9 – 14, perfect, corolla yellow, tubulose, 6 – 6.5 mm long, with five triangular lobes to 1.5 mm long, apically papillose; anthers 1.5 – 1.7 mm long, basally obtuse, the connectival appendage oblong, 0.3 – 0.5 mm long, endothecial cells with radial ornamentation type, anther collar balustriform; style 6 – 6.5 mm long, stylopodium slightly swollen, style branches 2 mm long, with stigmatic papillae in two contiguous rows, the apex truncate and bearing a tuft of trichomes
    Fruits
    Cypselae cylindrical, 1.5 – 2 mm long, 10-costate, glabrous, carpopodium symmetrical, setose; pappus 5 – 5.5 mm long, uniseriate, bristles white, filiform, deciduous
    Distribution
    Senecioalbus is presently known only from the municipality of Delfinópolis and the Serra da Canastra National Park, in the municipality of São Roque de Minas (Map 1).
    Ecology
    Collected in bogs and in camposrupestres (rocky grasslands). Flowers were collected from December to June, after seasonal burning of the fields, an illegal practice that is still, unfortunately, common in the park.
    Conservation
    According to the presently available information about this species, it can be scored using IUCN Categories and Criteria (IUCN 2001; Teles & Nakajima 2006) as Critically Endangered (CR B1abi,ii, B2abi,ii), since its area of occurrence is smaller than 100 km2, its area of occupancy is smaller than 10 km2, and it is known from only two localities.
    Note
    The specific epithet alludes to the whitish indumentum that covers this species. Senecioalbus differs from most species of sect. Adamantina by the discoid capitula, sharing this feature with Seneciogertii; both species can be distinguished from each other and from the other species of the section through the characters presented in the following key.

    Distribution

    Native to:

    Brazil Southeast

    Senecio albus J.N.Nakaj. & A.M.Teles appears in other Kew resources:

    First published in Kew Bull. 64(1): 162 (161-165; fig. 1, (2009)

    Accepted by

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

    Literature

    Kew Bulletin
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    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

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    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