African Plant Database


Commelina polhillii Faden & Alford
Family : COMMELINACEAE
Protologue : Novon 11(1): 16 (2001)
Information on the genus : Commelina
 
 
Status
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Commelina polhillii Faden & Alford subsp. polhillii
 
Taxon infra-specific
Commelina polhillii Faden & Alford subsp. polhillii
Commelina polhillii subsp. kucharii Faden (2012)
 
Ecology and distribution
Trop. Afr.
Biology : Annual herb with erect or ascending to decumbent shoots 7-45 cm long, sometimes rooting at lower nodes; roots thin, fibrous; stems slightly flattened on one side, often maroon or with maroon stripes, glabrous except for a line of pubescence; leaf sheaths 3-7 mm long, usually split to the base, sometimes purple-veined with a line of hairs along the split edge; lamina sessile, conduplicate, often falcate, linear(-lanceolate), 1-11,4x0,3-0,7 cm, apex acuminate, margins often ciliate toward the base, scabrous apically, surfaces glabrous; spathes solitary with peduncle 0,6-5 mm long, with a line of pubescence; spathe slightly to not at all falcate, 3,9-16,5x2,6-6 mm, apex acute, base cordate, occasionally truncate to hastate, margins free, ciliate, surfaces glabrous, green (rarely the veins faintly purple); flowers buff-orange.
Ecology : Woodland on hard lateritic material associated with soils with impeded drainage; pits; woodland with Terminalia mollis, T. sericea, Combretum grandifolium, C. zeyheri, Dalbergiella nyassae, Julbernardia globifera; wet sandy soil with some clay admixed, edge of cultivation; ironstone outcrop with shallow soil and Brachystegia woodland; c. 1050-1500 m alt.
  Near the sympatric C. subulata (both species were collected at the type locality of C. polhillii) but: - seeds of C. polhillii round to slightly elliptic, with a single, central, round, deep dorsal pit; testa covered throughout by white farinose granules.
  • 164 Commel.: (2012)
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    More info on :
    see under Jstor_African Plant Initiative
    see under The International Plant Name Index
     
    Map
    carte afrique num 11767
     
    Record n°11767
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