Hyparrhenia dregeana (Nees) Stent

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Synonyms: Andropogon acutus Stapf
Andropogon dregeanus Nees
Andropogon pilosissimus Hack.
Cymbopogon micratherus Pilg.
Hyparrhenia acuta (Stapf) Stapf ex Stent
Hyparrhenia brachychaete Peter
Hyparrhenia cymbaria sensu Stent & Rattray, non (L.) Stapf.
Hyparrhenia elongata Stapf
Hyparrhenia micrathera (Pilg.) Pilg. ex Peter
Hyparrhenia phyllopoda Stapf
Hyparrhenia pilosissima (Hack.) J.G. Anderson
Hyparrhenia subaristata Peter
Common names:
Frequency:
Status: Native
Description:
Robust, densely caespitose perennial; culms up to 200 cm high (or more) and up to 4 mm in diameter at the base, simple or scantily branched. Basal leaf sheaths silky pubescent below, otherwise all sheaths glabrous; leaf laminas up to 60 cm × 3–8 mm, flat or inrolled and narrower, glabrous, usually stiff and glaucous with scaberulous nerves and harsh to the touch, sometimes soft and green. False panicle 20–50 cm long, narrow, fairly dense; spatheoles 2.5–5 cm long, narrowly lanceolate, glabrous or thinly hirsute (rarely the whole panicle copiously villous), becoming reddish-brown; peduncles 1.5–5 cm long, from half as long as to rather longer than the spatheole, pilose above with yellowish hairs; racemes 2–3 cm long, 10–25-awned per pair, usually exserted terminally, tardily deflexed; raceme-bases subequal, the superior 1–1.5 mm long, flattened, stiffly barbate, the apex with a scarious rim and usually produced into a definite oblong appendage up to 0.5 mm long. Homogamous spikelets 5–7 mm long, a single pair at the base of the inferior raceme only, villous or rarely glabrous. Sessile spikelets 4–5 mm long; callus c. 1 mm long, cuneate, subacute to narrowly obtuse at the apex; inferior glume oblong-lanceolate, yellowish-green to light brown or purple, densely villous to hispidulous, rarely glabrous; awn (1)8–20(28) mm long, the column pubescent with tawny hairs. Pedicelled spikelets 5–6 mm long, similar to the sessile spikelets in indumentum and colouring, muticous or with a short awn-point up to 1.5 mm long at the apex; callus scarcely developed; pedicel-tooth obscure.
Notes:
Derivation of specific name:
Habitat: Growing in upland grassland, often in marshy ground and alongside streams
Altitude range: (metres) 1000 - 2300 m
Flowering time:
Worldwide distribution: The eastern side of Africa from Ethiopia southwards to South Africa, but most abundant in the northern and southern extremities of this range, Malawi, Zimbabwe
Zimbabwe distribution: C,E
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 350. (Includes a picture).

Cope, T.A. (2002). Poaceae Flora Zambesiaca 10(4) Pages 121 - 122.

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 105.


Other sources of information about Hyparrhenia dregeana:

Our websites:

Flora of Malawi: Hyparrhenia dregeana

External websites:

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


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-21

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2021). Flora of Zimbabwe: Species information: Hyparrhenia dregeana.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=108850, retrieved 27 September 2021

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