hazardia: small genus of shrubs and subshrubs of western United States having flowers that change color as they mature
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
rheumatoid arthritis: a chronic autoimmune disease with inflammation of the joints and marked deformities; something (possibly a virus) triggers an attack on the synovium by the immune system, which releases cytokines that stimulate an inflammatory reaction that can lead to the destruction of all components of the joint