chervil: aromatic annual Old World herb cultivated for its finely divided and often curly leaves for use especially in soups and salads
herb: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
monohybrid: a hybrid produced by crossing parents that are homozygous except for a single gene locus that has two alleles (as in Mendel's experiments with garden peas)