The Dogwood family, with 15 genera, is widely distributed in temperate regions. Cornus (pp. 203, 205) and Nyssa (page 207) are the only genera having tree representatives in North America. Of the 40 known species of Cornus 15 are native to North America and 7 to West Virginia. The shrubby species are listed on page 234. Nyssa comprises 7 known species, 5 of which are found in North America and 1 in this State.