Thelocactus conothelos f. albiflora
Thelocactus conothelos f. albiflora
Family
Cactaceae
Genus
Species
Thelocactus conothelos f. albiflora
Author
hort.
Chinese genus
瘤玉属
Chinese name
-
Accepted
DescriptionEdit description
Habit
Simple but occasionally clustering.
White Flowering Form
The plants are identical in shape to the standard species but have pure white flower instead of pink/purple.
Central Spines
1-4, stouter and longer than the radials, somewhat spreading or ascending, acicular, nearly straight or slightly recurved, ochre, red, reddish-white or dark blackish-brown becoming grey with age and often shedding, up to (1-)1,5-5(9) cm long.
Seeds
1,5-2,1 x 1,2-1,5 mm, testa cells conical pointed with a smooth surface.
Description
Thelocactus conothelosSN|15121]]SN|15121]] is a nice solitary cylindrical cactus with large bubble tubercles and pink flowers. It is one of the cactuses that blooms early. Like many cactus forms of dry, hot region of Mexico, plants are strongly variable.
Flowers
3-5 cm long, (3-)4-5(-6) cm in diameter, tube well-developed, narrow, pericarpels naked below but with heavy scales above. Flowers are white.
Ribs
Not evident and replaced by upward pointing spiralled tubercles, the lower tubercles, conical, delta shaped to elliptical (8-)12-20(-24) mm long and 4-18 mm broad.
Stem
Spherical, elongated or somewhat cylindrical, 6-25-(45) cm tall and 7-17 cm across, yellowish green, greyish green to pale green.
Radial Spines
(7-)14-16(-23) needle-like, usually white or to greyish brown (5-)8-12(-20) mm long spreading.
Fruits
Spherical-oblong dry at maturity, 10-14 mm long, 6-9 mm in diameter, dehiscing by basal pores, scaly.
Areoles
Areoles with short furrows, with or (usually) without nectar-secreting glands, upper areoles oblique, white tomentose, typically 1-3 cm apart.