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.
As in Figure 2 but presented as unrooted trees.
(a) The tree based on the extracellular part and (b) that based on the internal kinase part. Asterids, rosids, lower eudicots and monocots are marked with blue, grey, red and green, respectively. Clade labelling is as in Figure 1. The placement of extracellular‐like somatic embryogenesis receptor kinase (ELS) receptors (lacking a cellular kinase component, see text) is indicated.
