Tribolium pusillum (Nees) H.P. Linder & G. Davidse

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Common names:
Annual; caespitose. Culms geniculately ascending, or decumbent; 5-30 cm long. Leaves mostly basal. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades 0.5-3 cm long; 0.5-3 mm wide; flaccid. Inflorescence a panicle; deciduous as a whole; subtended by an inflated leaf-sheath; embraced at base by subtending leaf. Peduncle disarticulating; disarticulating below uppermost sheaths. Panicle capitate; oblong, or globose; 0.5-2 cm long. Panicle branches terete; pilose. Spikelets solitary. Fertile spikelets sessile. Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures. Glumes similar; shorter than spikelet; similar to fertile lemma in texture; recurved at apex. Lower glume elliptic; 2.5-3 mm long; 0.75 length of upper glume; membranous; 1-keeled; 5-7 -veined. Lower glume surface pilose; with tubercle-based hairs. Lower glume apex acuminate; awned. Lower glume awn 8-13 mm long. Upper glume elliptic; 3-3.5 mm long; 0.8 length of adjacent fertile lemma; membranous; 1-keeled; 5-7 -veined. Upper glume surface pilose; with tubercle-based hairs. Upper glume apex acuminate; awned. Upper glume awn 8-13 mm long. Fertile lemma oblong; 3.5-4 mm long; membranous; without keel; 7-9 -veined. Lemma lateral veins prominent. Lemma surface pilose; hairy below; with capitate hairs. Lemma margins ciliate (tuberculate). Lemma apex acuminate; awned; 1 -awned. Principal lemma awn curved; 1-4 mm long overall. Palea 2 -veined. Palea keels scaberulous. Palea apex ciliate. Apical sterile florets resembling fertile though underdeveloped. MorphologyReproductive morphologyFlowers Lodicules 2; cuneate; fleshy; truncate.
Notes: This species is included on the basis of the reference in Chapano (2002) in which it is recorded as an introduced species in division S.
Derivation of specific name: pusillum: insignificant, small, weak
Altitude range: (metres)
Flowering time:
Worldwide distribution: Cape Province, South Africa, Zimbabwe
Zimbabwe distribution: S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Chapano, C. (2002). A checklist of Zimbabwean grasses Southern African Botanical Diversity Network Report No. 16. Pretoria. Page 4.

Other sources of information about Tribolium pusillum:

External websites:

African Plants: A Photo Guide (Senckenberg): Tribolium pusillum
African Plant Database: Tribolium pusillum
BHL (Biodiversity Heritage Library): Tribolium pusillum
EOL (Encyclopedia of Life): Tribolium pusillum
GBIF (Global Biodiversity Information Facility): Tribolium pusillum
Google: Web - Images - Scholar
iNaturalist: Tribolium pusillum
IPNI (International Plant Names Index): Tribolium pusillum
JSTOR Plant Science: Tribolium pusillum
Mansfeld World Database of Agricultural and Horticultural Crops: Tribolium pusillum
Plants of the World Online: Tribolium pusillum
Tropicos: Tribolium pusillum
Wikipedia: Tribolium pusillum

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Species information: Tribolium pusillum., retrieved 12 April 2024

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