Themeda quadrivalvis

(Click image to Enlarge)

Photographs by: Dr. Maulik Gadani

  • Botanical Name : Themeda quadrivalvis (L.) Kuntze
  • Synonyms : Andropogon ciliatus (L. f.) Thunb., Themeda ciliata (L. f.) Hack.
  • Plant Family : Poaceae (Gramineae)
  • Plant Form : Grasses
  • Occurrence (Special Areas) : Indroda Park

About Themeda quadrivalvis Plant :

  • Habit : An annual grass with stem suberect or geniculately ascending and rooting from the lower nodes, very slender, terete, glabrous, simple or branched.
  • Leaves : Linear, acute, flate, flaccid, glabrous, sheaths glabrous or upper with scattered bulbous-based hairs towards the mouth, ligules membranous, rounded, glabrous.
  • Inflorescence and Flowers :
    • Panicle erect, usually dense, lower branches solitary or 2-3-nate, filiform, glabrous, undivided, spathes linear to subulate from a broad lanceolate base, glabrous or with bristles, racemes, erect. Involucralspikelets whorled, sessile persistent, linear-lanceolate, barren or imperfectly male, lower involucral glumebaset along the winged keels with stiff bristles.
    • Pedicellate spikelets narrow, not winged, glabrous.
    • Bisexual spikelet solitary not exserted, narrow, linear-lanceolate, callus very short, lower involucral glume obtuse, brown, 6-7 nerved, upper involucral glume glabrous lower floral glume shorter than the involucral glumes, sometimes 2-toothed, upper floral glume awned, awn slender. Anthers 1mm long.
    • The lower involucral glume of the bisexual spikelet is shining but beset all over with rather stiff hairs.
    • Callus densely bearded with long brown hairs.
    • Lower involucral glume brown when mature.
  • Flowering and Fruiting Time : October