Table 1.

Comparative growth rates of 10 different gametophytes and the first leaves of 10 different sporophytes produced during the growing seasons.

	Mean increase (mm/day)
Plant no.	Gametophytes	Sporophytes
1	0.018	0.04
2	0.019	0.20
3	0.019	0.11
4	0.053	0.18
5	0.050	0.17
6	0.040	0.18
7	0.057	0.07
8	0.041	0.05
9	0.090	0.12
10	0.020	0.42
Mean	0.0857	0.154