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.
(A) An oblique cut with a razor blade of a fresh approx. 3-year-old, perennial root with intact, sandsheath and persistent root hairs. Brown collapsed cortex and epidermis (arrows). (B) Sandsheath surrounded by a haustorium (arrow) of the root hemiparasite Nuytsia floribunda. A fine Nuytsia root (arrowhead) connects haustorium to the parasite. Scale bars: (A) = 1·7 mm; (B) = 4 mm.
