1. Family: Boraginaceae Juss.
    1. Genus: Heliotropium Tourn. ex L.
      1. Heliotropium jaffiuelii I.M.Johnst.

        This species is accepted, and its native range is Chile (Antofagasta).

    [KBu]

    Luebert, F. 2013. A revision of Heliotropium sect. Cochranea (Heliotropiaceae). Kew Bulletin 68: 1. DOI https://doi.org/10.1007/s12225-013-9432-6

    Type
    Type: Chile, Región de Antofagasta, Prov. Tocopilla, Tocopilla, Nov. 1931, F. Jaffuel 2524(holotype GH; isotypes CONC, G).
    Habit
    Erect shrubs, laxly ramified
    Stem
    Stems and foliage glutinous, covered by inconspicuous short-strigose pubescence
    Leaves
    Leaves alternate, solitary or grouped in fascicles of up to 8 leaves, sessile, linear, 4 – 10 × 0.5 – 1 mm, terete; lamina glabrous or inconspicuously pubescent, greyish-green, margin entire, base and apex obtuse, veins inconspicuous
    Inflorescences
    Inflorescences terminal, dichotomously branched, 1 – 4 cm long
    Flowers
    Flowers sessile or shortly pedicellate (pedicel < 1 mm), alternate, erect
    Calyx
    Calyx globose to cylindrical, pale green; calyx lobes linear-lanceolate, fused only at the base, pubescent outside, glabrous inside, 1.5 – 2 × 0.5 – 1 mm, free portion 0.8 – 1.5 mm long, apex acute
    Corolla
    Corolla infundibuliform, inconspicuously pubescent outside; limb horizontally spreading 2.5 – 4 mm wide, lobes rounded, c. 0.8 × 0.8 mm; tube more than twice as long as the calyx, 3 – 4 mm long
    Stamens
    Stamens included or little exserted; filaments adnate to petals; anthers lanceolate, glabrous, 0.4 – 0.9 mm, base cordate, apex acute, overlapping the apex of the stigmatic head
    Ovary
    Ovary glabrous, c. 0.3 mm diam., with a basal nectar ring
    Style
    Style glabrous, c. 0.1 mm long, shorter than the stigmatic head
    Stigma
    Stigmatic head conic, glabrous, c. 0.3 – 1 × 0.5 – 0.6 mm
    Fruits
    Fruits dry, ellipsoid, rugose, glabrous, light brown, c. 2.4 × 1.6 mm diam., falling apart at maturity into two 2-seeded nutlets, each c. 1.5 × 1.2 mm diam.
    Pollen
    Pollen prolate, 17.4 – 21.1 × 8.4 – 11.6 μm (from Jaffuel 2424, G)
    Distribution
    Endemic to the coastal areas north of Tocopilla (22°S), Región de Antofagasta, Chile, 22°6' – 22°2'S (Map 4).
    Ecology
    Coastal hills on gravelly slopes at the fog zone (Jaffuel 1936). The vegetation is a desert scrub dominated by Eulychnia iquiquensis (K. Schum.) Britton & Rose and Ephedra breana Phil. (Luebert et al. 2007).
    Conservation
    Critically endangered (CR), according to the criterion of area of occupancy (B2 (a,c), IUCN 2001). This species is known from one locality, and has been collected only twice. The area occupied by this species is currently subject to the disturbance effects of urban expansion and mining associated with the development of the city of Tocopilla. There are currently no conservation measures being taken in that area, although its flora is known to contain several endemics (Luebert et al. 2007) that need to be protected.
    Note

    Only known from the type specimen and one additional gathering, both collected in the surroundings of Tocopilla, Chile. Attempts at recollecting the plant at the type locality failed. It is likely a very rare and local endemic. Due to its geographical distribution, leaf and floral morphology, this species is readily distinguished from the other members of section Cochranea.

    The name was dedicated to Félix Jaffuel, collector of the type specimen.

    Distribution

    Native to:

    Chile North

    Heliotropium jaffiuelii I.M.Johnst. appears in other Kew resources:

    First published in J. Arnold Arbor. 18: 19 (1937)

    Accepted by

    • Luebert, F. (2013). A revision of Heliotropium sect. Cochranea (Heliotropiaceae) Kew Bulletin 68: 1-54. Royal Botanic Gardens, Kew.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.

    Literature

    Kew Bulletin
    • Förther (1998: 201)
    • (Johnston 1937: 19)
    Kew Backbone Distributions
    • Luebert, F. (2013). A revision of Heliotropium sect. Cochranea (Heliotropiaceae) Kew Bulletin 68: 1-54. Royal Botanic Gardens, Kew.

    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