Disocactus Lindl.

Greek dis — twice referring to the two-whorled perianth of the type species.

Body in nature either epiphytic or growing on rocks; in horticulture ideal for hanging baskets. Stems either all flattened, or main stems cylindrical and ribbed, lateral ones flattened; margins scalloped or toothed. Areoles small, spineless. Flowers diurnal, variable but with narrow tube bearing a few small scales, mostly red, pink, orange, yellow or white; stamens in 2 groups, one forming a ring at the throat of the flower; spring. Fruit with few if any small scales.

The most widely grown species is D. macrantha (Alexander) Kimnach & Hutchison which has pale yellow flowers about 3 cm wide and notched flattened stems to about 4-5 cm wide. [Pseudorhipsalis macrantha Alexander] T

This genus is likely to incorporate Aporocactus Lem., Rat-tail Cactus. R

Stems both flattened and cylindrical, the edges usually with scalloped margins; flowers less than 2 cm long.

About 10 species from C America, W Indies and tropical S America.

Source: Thompson, A, ; Forbes, S.; Spencer, R. (1997). Cactaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Caryophyllanae
order      Caryophyllales
family       Cactaceae