Neolloydia Britton & Rose
  • in Bull. Torrey Bot. Club 49: 251. 1922.
  • [Greek neos, new, and the genus name Lloydia, for Francis Ernest Lloyd, 1868-1947 , Canadian botanist]

Cite taxon page as 'WFO (2023): Neolloydia Britton & Rose. Published on the Internet; Accessed on: 30 Mar 2023'

General Information

Plants erect, branched or unbranched, not deep-seated in substrate. Roots diffuse. Stems unsegmented, gray-green to yellowish or bronze-tinted green, spheric to short cylindric, 5-10(-24) × (1.8-)2.5-6.5(-8) cm, usually white woolly at apex; tubercles prominent, not confluent into ribs, tightly packed in vertical, sprialing rows as if tuberculate ribs, compressed conic, 7-12 × 4-7 mm, 8-18 mm diam. at base; areoles adaxially elongated into long, narrow, conspicuous grooves extending into axils of tubercles, usually short woolly; areolar glands absent; cortex and pith not mucilaginous; specialized, yellow, sticky layer beneath old bark. Spines 9-17[-26] per areole, white, gray, brown, or black, acicular, straight; radial spines 9-15[-25] per areole, with bulbous bases, 6-17 mm; central spines [0-]6(-8) per areole, terete with bulbous bases. Flowers diurnal, at stem apex, at axillary end of areolar groove, showy, short funnelform, 2.5-3.2 × 3-5.5 cm; outer tepals whitish or magenta to purplish, to 25 × 10 mm, margins entire (sometimes irregularly, minutely denticulate); inner tepals bright rose-pink or magenta, 15-32 × 5-11 mm, margins entire; ovary smooth, spineless; stigma lobes 4-7, white to cream, 2-4 mm. Fruits dehiscent along vertical slits or indehiscent, green to white (slightly pinkish near base), becoming tan or greenish brown, spheric, 4-10 × 4-8 mm, dry and papery, smooth, spineless; pulp absent; floral remnant deciduous. Seeds black to gray, obovoid or pyriform, 1.1-1.6 × 0.8-1.2 mm, papillate; testa cells strongly convex. x = 11.

  • Provided by: [B].Flora of North America @
    • Source: [
    • 1
    • ]. 



    Anderson, E. F. 1986. A revision of the genus Neolloydia B. & R. (Cactaceae). Bradleya 4: 1-28.

  • Provided by: [B].Flora of North America @
    • Source: [
    • 1
    • ]. 

    Other Local Names

    [Greek neos, new, and the genus name Lloydia, for Francis Ernest Lloyd, 1868-1947 , Canadian botanist]

      Taxonomic Status Reference

    • 1 Breslin, P.B., Wojciechowski, M.F. & Majure, L.C. 2021: Molecular phylogeny of the Mammilloid clade (Cactaceae) resolves the monophyly of Mammillaria. ?in-title? : .

     Information From

    Caryophyllales. World Flora Online Data. 2022.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association