Protologue Description: XC. trichina, nom. nov. C. tenuifolia X trisperma Fern. RHODORA, iv. 226 (1902). VALLEY OF THE EXPLOITS: muddy shore, Buchan Junction, July 15, 1930 K.P. Jansson.
This hybrid is so wide-spread in occurrence and in the two other stations personally known to me, so very abundant (at the type station so abundant as to easily furnish 100 very full sheets) that it seems more convenient to have a binomial with which to refer to it. The original collections was an extensive colony at Fort Fairfield, Maine. It is also rather abundant on a boggy shore at Blanc Sablon, Quebec Labrador, Fernald & Wiegand, no. 2797; and it was collected at Lansing, Michigan, July 28, 1890, by G.H. Hicks.