Hundreds of orchid plants are for sale at the Lyman Estate Greenhouses, Waltham, Massachusetts, including many hard to find varieties.  Among the varieties on display and for sale: cattleyas, laelias, paphiopedilums, and phalaenopsis. Both species and hybrid plants are available in bud or blooming. Free admission.  Call 781-891-1985  for more information and directions, or log on to www.historicnewengland.org.