Encephalartos nubimontanus P.J.H.Hurter
  • Phytologia


Cite taxon page as 'WFO (2019): Encephalartos nubimontanus P.J.H.Hurter. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000667435. Accessed on: 21 Nov 2019'

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).