Efossus tricuspidatus
Cactography 5. 1926
Family
Cactaceae
Genus
Species
Efossus tricuspidatus
Author
Orcutt
Chinese genus
-
Chinese name
-
Primary
Accepted
DescriptionEdit description
Central Spines
3 short in the upper part of the areoles, lanceolate, straight or recurved 1-3 cm long, somewhat anulate, reddish to amber coloured (sometime with a darker tip) that becomes whitish as they ages. The upper one is very flat and sometime three-toothed at apex.
Description
Habit
Flowers
Abundant up to 1,5 cm long, cream or yellowish-white often with darker reddish or brownish throat. Scales on the ovary ovate.
Spines
Typically 5.
Ribs
Numerous,25-40(-55) wavy, thin .
Stem
Round to shortly cylindrical, apex flat or slightly depressed, up to 10 cm in diameter (but usually smaller) the epidermis is dark bluish-green. Older plants sometimes get corky near the base.
Radial Spines
2 (occasionally more), appressed, in the bottom of the areole, awl shaped pointing downward, much shorter than the upper ones, up to 1 cm long.
Fruits
Greenish, small.
Areoles
Well spaded (only 1 or 2 per ribs) Initially woolly, afterwards naked.