Pleiotaxis rogersii S. Moore

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Pleiotaxis rogersii

Habit
Brachystegia woodland
Nsumbu National Park
May 2020
Photo: Nick Wightman

Pleiotaxis rogersii

Flower
Brachystegia woodland
Nsumbu National Park
May 2020
Photo: Nick Wightman

Pleiotaxis rogersii

Flower
Brachystegia woodland
Nsumbu National Park
May 2020
Photo: Nick Wightman

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Synonyms: Pleiotaxis davyi S. Moore
Pleiotaxis pulcherrima var. angustifolia sensu De Wild.
Common names:
Frequency: Occasional
Status: Native
Description:
Slender erect suffrutex growing from a woody rootstock; stems annual, 1-several, 30-135 cm. tall, unbranched or occasionally branching above, leafy, softly finely hairy; leaves discolorous, sheathing stem at the base, 5-16 x 0.4-2 cm., linear-elliptic to narrowly lanceolate, tapering acute to somewhat attenuate at apex, cuneate and subsessile to subauriculate at base, sometimes narrowing to a winged petiole-like midrib c. 10 mm long before grading into cylindrical or narrowly funnel-like sheath c. 20 mm. long, margins finely sharply serrate with serrations becoming linear teeth c. 3 mm. long towards base, upper surface glabrous, lower surface greyish hairy; capitula solitary and terminal or 2-4 on short to long stalks; involucres mostly 14-20 x 8-14 mm. obconic-campanulate; phyllaries appressed sheathing, outer sometimes extending briefly onto stalk, white hairy to glabrescent outside, margins narrowly reddish-tinged hyaline c. 3 mm. long and narrowly ovate outside, increasing to c. 18 mm. long and lorate-lanceolate inside; middle phyllaries to 4.5 mm. wide, narrowly lovate and rounded to obtuse at apex; inner phyllaries narrower; florets numerous; corollas bright to deep red, up to 18 mm. long with a long slender tube abruptly dilated into a short cylindric deeply narrowly-lobed limb which exceeds the pappus and involucre, glabrous; achenes 7-8.5 mm. long, narrowly cylindric, obscurely narrowly many-ribbed, densely hispid; pappus of copious subplumose setae 9-12 mm. long.
Type location:
DRC
Notes:
Derivation of specific name:
Habitat: Miombo and Marquesia woodlands, sometimes in mushitu.
Altitude range:
Flowering time:May
Worldwide distribution: DRC and Zambia.
Zambian distribution (Flora Zambesiaca): W
Zambian distribution (Provinces): Nw
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Saturday 25 July 2020
Literature:

Pope, G.V. (1992). Compositae Flora Zambesiaca 6(1) Pages 12 - 15. (Includes a picture).

Wild, H. (1972). The Compositae of the Flora Zambesiaca area. 3. Mutisieae. Kirkia 8(2) Page 197.

Other sources of information about Pleiotaxis rogersii:

External websites:

African Plants: A Photo Guide (Senckenberg): Pleiotaxis rogersii
BHL (Biodiversity Heritage Library): Pleiotaxis rogersii
EOL (Encyclopedia of Life): Pleiotaxis rogersii
ePIC (electronic Plant Information Center): Pleiotaxis rogersii
Flora Zambesiaca web site: Pleiotaxis rogersii
GBIF (Global Biodiversity Information Facility): Pleiotaxis rogersii
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Pleiotaxis rogersii
iNaturalist: Pleiotaxis rogersii
IPNI (International Plant Names Index): Pleiotaxis rogersii
JSTOR Plant Science: Pleiotaxis rogersii
Kew Herbarium catalogue: Pleiotaxis rogersii
Mansfeld World Database of Agricultural and Horticultural Crops: Pleiotaxis rogersii
Plants of the World Online: Pleiotaxis rogersii
The Plant List (version 1.1): Pleiotaxis rogersii
Tropicos: Pleiotaxis rogersii
Wikipedia: Pleiotaxis rogersii


Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-20

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2020). Flora of Zambia: Species information: Pleiotaxis rogersii.
https://www.zambiaflora.com/speciesdata/species.php?species_id=200260, retrieved 13 August 2020

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