Encephalartos nubimontanus P.J.H.Hurter
  • Phytologia


This taxon is accepted by Zamiaceae
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

Diagnostic Description

Plants of Encephalartos nubimontanus superficially resemble those of Encephalarlos cupidus R.A. Dyer (Dyer 1971) by their stiff, pungent, glaucous fronds.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Morphology

    Plant arborescent, suckering from the base. Trunk often decumbent, up to 2.5 m long, 350-400 mm diameter. Leaf bases persistent, crown slightly tomentose. Cataphylls velvety white, becoming sub-glabrous with age. Leaves numerous in a dense crown, apically recurved, rigid, glaucous, 1.1-2.0(1.4) m long, pinnae ascendant. Petiole apparent, slightly trigonous, basally bulbous, 230 mm long, slightly tomentose with a reddish brown collar at maturity. Rachis glabrous, round in cross-section, becoming yellow with age. Pinnae dentate or entire, veins not raised abaxially, margins slightly thickened, inflexed, directed toward the frond apex at an angle of circa 45° to the rachis, opposing leaflets indexed, set at an angle of circa 70° to each other, oriented incubously towards each other; proximal leaflets gradually reduced to a series of spines; median leaflets 180-250 mm long, 15-25 mm wide, outer lamina edge falcate, narrowly elliptic, gradually acuminate apically, pungent, basally subsessile to the rachis, apices somewhat turned toward the frond apex. Strobili seriate, dimorphous, glabrous; scale facets smooth, light green. Microsporangiate strobili 1-5 per trunk, subcorneal, 250-400 mm long, 50-90 mm in diameter, stalked on a peduncle 30-45 mm long. Median microsporophylls slightly descending, lamina oblong, tapering to the base, 11-24 mm wide, 20-30 mm long, 5-10 mm high, margins contracted to the pedicel, bulla with two trapezoidal lateral facets, without median facet but well defined hump-like sagittal ridge; terminal facet a drooping liplike structure, often slightly crenulate. Megasporangiate strobili 1-3 per trunk, ovoid, 360-400 mm long, 180-200 mm in diameter, with peduncle 360-400 mm long, 180-200 mm in diameter, with peduncle up to 150-310 mm long. Terminal sterile megasporophyll bullae drawn out into ascending lip-like structures. Median megasporophylls rhombic, 40-60 mm wide, 50-60 mm long, and 350-360 mm high. Bulla with two smooth or slightly verrucose trapezoidal lateral facets and a single smooth or slightly verrucose oblong median facet, terminal facet smooth, slightly concave, 3-5 mm deep, lateral ridges slightly drawn out, sagittal crest verrucose, drooping below the pedicel, seminal ridges smooth or slightly sagittate. Seed circa 200 per cone, sarcotesta orange-red, sclerotesta 35-38 mm long, 23-30 mm in diameter, ellipsoidal, round and smooth.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Habitat

    Plants grow scattered in mixed deciduous woodland, especially on cliff faces.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Distribution

    At present this species is known only from one small area in the Northern Province.

  • Provided by: [A].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

      Bibliography

    • 1 Hurter, PJH. 1995. Two newly described cycads from Africa. Phytologia 78(6): 409 - 416.
    • 2 Phytologia

     Information From

    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • A All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • B CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature v.3
    https://www.iucnredlist.org/
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • C See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use
    International Union for Conservation of Nature
    https://www.iucn.org/
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • D All Rights Reserved
    Zamiaceae
    • E CC0 1.0 Universal (CC0 1.0).