Angiosperms (Flowering Plants) • Earth.com

Rattail cactus

(Disocactus flagelliformis)

galery
en

Description

Aporocactus flagelliformis (syn. Disocactus flagelliformis), the rattail cactus, is a species of flowering plant in the cactus family Cactaceae, and is the most cultivated species in the genus Aporocactus. Due to its ease of cultivation and attractive floral displays, it is often grown as an ornamental potted plant. Stems ascending, later prostrate or pendent, profusely branching at base, 1–2 m long or more, 8–24 mm thick; ribs 7-14, obtuse; margins ± tuberculate; areoles minute, whitish; internodes 4–8 mm; spines 8-20, 3-8 (-10) mm long, bristle-like, yellowish to brownish; epidermis green, later grayish. Flowers zygomorphic, 7–10 cm long, 2-4 (-7,5) cm wide, limb bilaterally symmetric, oblique, diurnal, open for 3–5 days, scentless; pericarpel greenish with acute bracteoles; receptacle 3 cm, long, curved just above pericarpel, bracteoles, brownish, acute; outer tepals linear-lanceolate, ± reflexed, 2–3 cm long, 6 mm wide, crimson; inner tepals narrowly oblong, to 10 mm wide, crimson, sometimes passing to pink along the margins; stamens white to pale pink, erect, exserted; style stigma lobes 5-7, white Fruit globose, 10–12 mm long, red, bristly, pulp yellowish; seeds ovoid, brownish red. Aporocactus used to be a subgenus in Disocactus, but according to molecular evidence, it should be excluded from Disocactus and form a genus on its own. Therefore, the correct scientific name of this species is Aporocactus flagelliformis. The Latin specific epithet flagelliformis means "shaped like a whip", in reference to the long shoots. The common name "rattail" refers to the same feature. One of the first cacti to be introduced into European culture. Watson (1898) offers the year 1690 but probably earlier. This has always been one of the most popular cacti in cultivation. Still almost nothing is known about its natural habit. Mexico: Hidalgo. Dry forests. Lithophytic or epiphytic in dry forests. Seems rare and seldom collected in the field.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Order:Caryophyllales
Family:Cactaceae
Genus:Disocactus
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