This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(woolly and Cereus; referring to the wool in the axils of the bracts on the ovary). Cactaceae. Usually slender plants, at first erect, but usually afterward clambering and creeping, often forming great clumps and thickets: flowers usually large; ovary covered with more or less enlarged bracts bearing hairs and spines in their axils: fruit red, spiny; flesh white; seeds numerous, black. for cultivation, see Succulents.
Jusbertii, Riccob. Ribs 6, usually low, with broad intervals; spines very short: flowers funnelform; petals white; stigma-lobes linear, green; bracts on ovary and flower-tube filled with long hairs. It is now believed that this species is a hybrid between an Echinopsis and some Cereus.
See Cereus for descriptions of the following species: Bonplandii, Riccob; Cavendishii, Riccob. This is described under Cereus, but probably does not belong to either genus; Martinii, Riccob; platygonus, Riccob; lephracanthus, Riccob; tortuosus, Riccob.
J. N. Rose.