Popis: |
The fruiting time of Ophioglossum engelmannii Prantl, Engelmann's Adder'stongue, has been reported in various manuals as occurring during mid-April to early June. Although Palmer (1932) stated that in the Ozarks in a wet autumn a second vegetative growth occurs, he made no mention of fruiting structures. In eastern Kansas, we have found that 0. engelmannii commonly produces both vegetative and fertile fronds not only during the spring and early summer, but also in the fall season from late August to early November. Table 1 summarizes the data obtained from one to several quadrats, each one m2, taken at each site from the colonies indicated, both in the fall of 1970 and the spring of 1971. |