| Noun | 1. | flame nettle - any of various Old World tropical plants of the genus Coleus having multicolored decorative leaves and spikes of blue flowersherb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests genus Coleus - genus of Old World tropical plants cultivated for their variegated leaves; various plants sometimes placed in genera Plectranthus or Solenostemon Coleus amboinicus, Coleus aromaticus, country borage, Plectranthus amboinicus - an aromatic fleshy herb of India and Ceylon to South Africa; sometimes placed in genus Plectranthus Coleus blumei, Joseph's coat, painted nettle, Solenostemon blumei, Solenostemon scutellarioides - perennial aromatic herb of southeastern Asia having large usually bright-colored or blotched leaves and spikes of blue-violet flowers; sometimes placed in genus Solenostemon |