dcsimg
Life » » Plants » » True grasses »

Aristida mutabilis Trin. & Rupr.

Distribution

    Distribution
    provided by eFloras
    Distribution: Pakistan (Sind, Baluchistan, Punjab N.W.F.P. & Kashmir); Mauritania to India; perhaps also in tropical East Africa.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of Pakistan Vol. 0: 47 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of Pakistan @ eFloras.org
    editor
    S. I. Ali & M. Qaiser
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    248423

Morphology

    Comments
    provided by eFloras
    Aristida meccana Trin. & Rupr. is very similar to, and perhaps conspecific with Aristida mutabilis. It differs mainly in the relative lengths of the glumes, the upper glume being more than 2.2 mm longer than the lower in Aristida meccana compared with less than 2.2 mm in Aristida mutabilis. However, there is a great deal of overlap although in Africa there is some geographical segregation of populations showing these two ranges. Aristida meccana is marginally the more northerly of the two but with a strong tropical East African element. It occurs throughout much of Arabia and North Africa and there is a single record from Jodhpur in India. That it may yet be found in Pakistan is clear, but it is doubtful if it can really be distinguished from Aristida mutabilis. It would be better, perhaps, to regard Aristida meccana as a variety, or at most a subspecies of Aristida mutabilis, although Bourreil (l.c.) is quite certain that the two should be regarded as distinct species.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of Pakistan Vol. 0: 47 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of Pakistan @ eFloras.org
    editor
    S. I. Ali & M. Qaiser
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    248421
    Description
    provided by eFloras
    Loosely tufted annual; culms (10)30-70 cm high. Leaf-blades linear, 6-14 cm long, narrow or convolute. Panicle narrowly ovate, 12-20 cm long, loose or ± contracted, the spikelets in narrow spikes at the tips of the main branches. Spikelets grey or pallid; glumes typically subequal, lanceolate, scaberulous on the keel and sometimes also on the flanks, the lower 4-5 mm long, the upper 6-7 mm long, acute or apiculate, less often with a short awn-point; lemma terete, 4-5 mm long, scabrid upwards; callus linear, 1-1.5 mm long, finely obtuse at the tip; column 2-5 mm tong, articulated just below the branching point of the awn; awn-branches 10-30 mm long, slender. parallel or divergent.
    license
    cc-by-nc-sa-3.0
    copyright
    Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
    bibliographic citation
    Flora of Pakistan Vol. 0: 47 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
    source
    Flora of Pakistan @ eFloras.org
    editor
    S. I. Ali & M. Qaiser
    project
    eFloras.org
    original
    visit source
    partner site
    eFloras
    ID
    248422