Fig. 3.
Transverse sections of the roots of (A, C) Cattleya walkeriana and (B, D) Oncidium ‘Aloha’. (A, B) General view of the roots. (C, D) Detail of the multilayered velamen (Ve) and the exodermis (Ex).
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.