Table 4.

Values of r for regressions of annual means of the four morphological traits plus number of plants flowering in the population against four meteorological variables (total annual March–June rainfall, insolation, and mean maximum daily temperature, plus annual number of frost days) treated as independent variables through 16 years (15 years for stem height and leaf area).

	Spur length	Flower number	Stem height	Leaf area	No. of flowering plants
Rainfall, t	-0.141	-0.182	0.122	0.148	-0.202
Rainfall, t–1	-0.100	0.152	0.537	0.607	-0.594
Rainfall, t–2	0.326	0.277	0.232	0.221	-0.176
Insolation, t	-0.543	0.319	-0.308	-0.195	0.305
Insolation, t–1	-0.464	-0.182	-0.546	-0.371	0.615
Insolation, t–2	-0.141	0.251	0.164	0.032	0.437
Daily temp., t	-0.259	-0.089	-0.095	-0.184	-0.292
Daily temp., t–1	-0.176	-0.219	-0.390	-0.084	0.138
Daily temp., t–2	0.032	-0.032	-0.126	-0.286	0.338
Frost, t	-0.077	-0.063	-0.152	0.055	0.286
Frost, t–1	-0.173	0.100	-0.032	-0.259	0.476
Frost, t–2	-0.487	0.330	0.000	0.126	0.214

Boldface values are p <0.05, no values are p <0.01. Degrees of freedom = number of comparable years minus 2.