Knoxia sumatrensis (Retz.) DC. [ Knoxia stricta Gaertner]
      
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5 576578 Knoxia sumatrensis (Retz.) DC. [116 965451 Spermacoce sumatrensis Retz.] Rubiaceae
Nat. Hist. Mus., London (The Endeavour Botanical Illustrations): (1768-1771)