Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relationships between (A and C) vessel frequency (mm–2) and (B and D) vulnerability index, and between (A and B) mean annual precipitation (mm) and (C and D) mean annual maximum temperature (°C), for Acacia s.s. from five climate regions. The r2 correlation coefficient and P-value are shown. Each point is the mean value for a species, n = 2–3.
