Trichocereus terscheckii (J.Parm. ex Pfeiff.) Britton & Rose

국표에 없다.

Origin and Habitat: Echinopsis terscheckiiSN|7374]]SN|8744]] (Trichocereus terscheckiiSN|8746]]SN|8746]]) has a relatively wide range in Argentina (Catamarca, Salta, Jujuy, La Rioja, San Juan and Tucumán provinces) and Bolivia (Tarija)
Altitude range: It grows at altitudes between 800 and 2,000 metres above sea level.
Habitat and Ecology: E. terscheckii grows on different soil types in grasslands, shrublands, semiarid intermediate Chaco forest habitats that receive 400-750 mm annual rainfall on steep hillsides and bajada, sometimes growing in thick stands, with numerous plants approaching 10 m in height and often serving as hosts to ballmosses ( Tillandsia spp.). It can also be found in semitropical deciduous forest, its tops exceeding the surrounding vegetation, an accomplishment apparently essential for its survival. Its lower-elevation limit seems to involve its ability to withstand competition from the Chaco forest. This cactus is locally abundant, but the populations are declining. It is affected by agricultural activities and urbanization, it is also harvested for its wood. Echinopsis terscheckiiSN|6867]]SN|8744]] occupies habitats found at elevations immediately below those at which the Echinopsis pasacanaSN|8744]]SN|6867]] grows. Echinopsis atacamensisSN|8744]]SN|7374]], at the lower elevation limit of its distribution, appears to hybridize readily with the larger E. terscheckii. E. terscheckii seems quite promiscuous, and the areas where intergrading occurs demonstrate numerous phenotypes of hybrids living harmoniously with non hybrids. Hybridization occurs also with other members of the genus Echinopsis (Trichocereus), the hybrids producing fertile offspring. The upward-elevation range of T. terscheckii is limited by cold and decreasing rainfall, whereas the lower range of the pasacana is limited by heat and increasing rainfall. This species is present in several protected areas, such as Quebrada de Las Conchas in Salta province.

Synonyms:

• Echinopsis terscheckii (J.Parm. ex Pfeiff.) H.Friedrich & G.D.Rowley

Common Names include:
ENGLISH: San Pedro, Cardon grande cactus, Argentine saguaro, South American saguaro
PERSIAN (فارسی): اکینوپسیس ترسککی
SPANISH (Español): Cardon Grande, Cardón santos, San Pedro, Cardón

 

Description: Echinopsis terscheckiiSN|6867]]SN|8744]] best known in cultivation as Trichocereus terscheckiiSN|8746]]SN|8746]] is a huge treelike cactus species, called in Argentina cardon grande. At first columnar, and usually in age with numerous large arms, 10 to 12 meters high.
Similar species: It has frequently been confused with another species, Echinopsis pasacanaSN|8744]]SN|6867]], of the same region, but it is larger, more branched, with fewer ribs, different spines, and larger flowers.
Stem: Trunk up to 45 cm in diameter, distinct woody, branching well above ground level; branches several cylindrical, columnar, erect, 10 to 20 cm in diameter.
Ribs: 8 to 14(-18), obtuse, prominent, 2 to 4 cm high, obtuse.
Areoles: Large, 1 to 1.5 cm in diameter, brownish felted, 2 to 3 cm apart.
Spines: 8 to 15, often more in older areoles, yellowish to brownish, subulate, yellow, 1-8 cm or more long.
Flowers: Very large, nocturnal, borne laterally, bell shaped to funnelform, white, 15 to 20 cm long, 12.5 cm broad; inner perianth-segments oblong, 7 cm. long, acute, white; outer perianth-segments dark red to greenish, pericarpel green, scales on the pericarpel and flower-tube ovate, mucronate-tipped, their axils filled with long whitish or brown wool. Flowers appear to be pollinated by bats.
Blooming season: The plants flower at various times of the year, but primarily during the rainy season (Summer).
Fruits: Globose or oblong green to blue about 1.3-5 cm in diameter, with acute scales woolly in the axils. Residents of their habitat have reported that the fruits are edible, but inferior to those of the pasacana.
Seeds: Dark-brown to almost black, oval approximately 0.76-1.5 mm long and up to 1.1 mm wide, somewhat warty tessellate.

Trichocereus terscheckii (llifle.com)

https://youtu.be/vhI8LXK7A2Q?t=613