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.
Embolism in whole leaves. (A) Catastrophic failure in a frond of Adiantum. An embolism quickly invades the quasi-totality of the vein network in 3 s. (Scale bar, 10 mm.) (B) Embolism map for a whole Quercus leaf. A high degree of spatial homogeneity in the timing of minor vein embolism can be seen, likely because of an overlap in the range of vulnerability present in larger vein orders. (Scale bar, 100 mm.)
