A Illustrated Guide to Arizona Weeds, Kittie F. Parker, page 126, paragraph 1

RED SPIDERLING
FOUR O'CLOCK FAMILY - nyctaginaceae
Red Spiderling - Boerhaavia coccinea Mill.
DESCRIPTION - A stout perennial with tough, prostrate stems radiating outward from a thick woody root and ascending at the ends, 1 to 6 feet long. The stems, often with sticky yellow bands above, are usually noticeably hairy, especially near the base. The leaves are similar to those of coulter spiderling, and are densely hairy to hairless. Some plants, however, are almost hairless.


The University of Arizona Press, 1972, Tucson, 0-8165-0288-9