E. platyacanthus CZ Dottor Arroyo, NL. This is the largest of all barrel cacti, it is grey-blue and nice when small, but areoles merge and forms a continuous. Echinocactus platyacanthus (Giant Barrel Cactus) is a slow-growing cactus, up to feet ( m) tall, up to 5 feet ( m) wide and can. Echinocactus platyacanthus. Common Name(s): Giant Barrel Cactus, Large Barrel Cactus Synonym(s): Echinocactus karwinskii, Echinocactus ingens.
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The north and southern subpopulations are geographically isolated by the Transverse Neovolcanic Axis. It is known from localities. It is found from 1, to 2, metres above sea level. The species occurs in xerophyllous scrub and prefers calcareous soils. Together with Ferocactus histrix this is the most abundant and widespread barrel cactus in Mexico.
This echinocavtus is quite common, but is a slow growing species which makes it particularly vulnerable to the removal of adult individuals.
Few young individuals are found suggesting future population declines. Generation time may be years or longer. Seedling establishment of Echinocactus platyacanthus is very low in habitat, because initial growth in the field is slow, two-years-old seedlings may be only 2.
Nurse plants or other shaded microhabitats that reduces local soil and air temperatures, such as those provided by rocks, are also important for seedling establishment. Most of unshaded seedlings of E.
Livestock also disturb the fragile soil causing a loss of suitable microhabitat for the establishment of new individuals. Echinocactus platyacanthu s is a slowly growing barrel echunocactus known under popular name visnaga, it is usually solitary and grows huge in habitat.
It could live more than a hundred years and is easily recognized because of its massive size, by far the largest of all barrel cacti. The stem is grey-blue somewhat tuberculate and nice when small, whilst large plants are heavily ribbed with numerous areoles forming a continuous line. They are day-flowering plants with vivid yellow flowers produced in spring and summer-autumn.
Nearly globular, broadly columnar, or barrel shaped, often very massive 0. Sometimes purple banded when juvenile. Ribs extremely variable in number, in young plants, later increasing to or more, acute, vertically oriented, more or less tuberculate and nice when small, later hight and even-edged.
Round, but becoming elliptical to linear and continuous in mature plants. Variable with age, large, stiff, somewhat flattened, with transverse striations, brownish, yellowish to reddish, at first, echinoactus or blackish in age Radial spines: The flowers appear from the end of spring to summer and also in autumn, only on larger mature specimens receiving enough full sun, but rarely flowering in cultivation.
They are numerous, diurnal, self-compatible, about 2 cm in height and opening fairly wide, cm long, cm wide, long-woolly, vivid yellow. Mature specimens often have a somewhat sway-backed, saddle-shaped apex, densely covered in white wool, where their flowers emerge.
Outer perianth-segments lanceolate, mucronate; inner perianth-segments broad, obtuse, yellow, the outer ones tappering to narrow brownish points. Stigma-lobes 10 open, spreading. Plants that flower in the spring schinocactus autumn, produce fruits in summer and winter respectively. Dry at maturity, oblong to narrowly club-shaped, yellowish, cm long, c.
Each fruit contains numerous black seeds approximately 1. Many non-cactus succulents have very broad shoots like this, but those are invariably due to a large amount of parenchymatous wood. Subspecies, varieties, forms and cultivars of plants belonging to the Echinocactus platyacanthus group.
The juvenile Echinocactus look very different from the mature specimens. In fact like the other Echinocactus and Ferocactus seedlings, the rib structure is not yet apparent, and they have pronounced tubercles. Older specimens take on an oblong shape with age and can dominate a landscape because of their large size and impressive bulk.
They also tend to lean to the south or southwest so that the spines can better protect the body of the plant from the harsh desert sun. In fact, desert travellers can use the plant as a compass. Descriptions and Illustrations of Plants of the Cactus Family. Downloaded on 31 May Past, present and future. They grow best in well-drained soil and a position in full sun, which will help to maintain the lustre of the spines and longevity of the flowers.
Provide the plant with extremely well-drained soils, as the plant are subject to crown and soft rot if it remains too moist. Besides, it performs wonderfully in containers, Container media should be coarse as well. Young plants are prone to mealy bug and red spider mite. In pre-Columbian pre-Hispanic times, these plants were regarded as being sacred and used for sacrifices, food and medicine. They pkatyacanthus probably the most economically important barrel cacti in Mexico.
The importance of these species increases with the aridity of the land and its platyacanthue for agriculture Del Castillo and Trujillo During the dry season when other plants are not available, herders remove the spines and use the stem of this species for forage for goats. Both of these uses are a threat to this slow-growing species.
This plants were also used by indigenous peoples of Mexico in many manner, for example the woolly hairs this plant produces have been used as filling fibres and weaving. Echinocactus platyacanthus Photo by: Raimondo Paladini This is one of the largest cactus, nearly globular, broadly columnar, or barrel shaped, often very massive stems 0.
This is the largest of all barrel cacti, it is grey-blue and nice when small, but areoles merge and forms a continuous line when it became large. This is one of the very large species of Echinocactus and is very characteristic of the deserts of Puebla where it is often the conspicuous plant of the landscape. Sometimes the plants body is purple banded when juvenile. It is grey-blue and nice when small, but areoles merge and forms a continuous line when it became echinocacus.
A purple banded specimen. Echinocactus platyacanthus, Miquihuana, Tamaulipas Photo by: Back to Echinocactus index.