Ancistrocactus scheeri (Salm-Dyck) Britton & Rose

국표에 없다.

Origin and Habitat: USA (Texas); Mexico (Coahuila, Nuevo León, Tamaulipas).
Altitude: 20-1600 metres over sea level.
Habitat and Ecology: Sclerocactus scheeriSN|788]]SN|788]] grows under drip line of brush in Tamaulipan thorn scrub community, on grassy plains and open low hills or brushy areas in grasslands, on sandy, loamy, silty, or gravelly soils. It is scattered and not very abundant. There are no known major threats to this species. The same area support endemic succulents and xerophyte plants such as Mammillaria centraliferaSN|9350]]SN|11912]], Mammillaria plumosaSN|11912]]SN|9350]], Astrophytum asteriasSN|1464]]SN|1464]], Echinocereus blanckiiSN|7817]]SN|7478]], Echinocereus stramineusSN|7478]]SN|7817]], Thelocactus bicolorSN|15126]]SN|3420]], Thelocactus saussieriSN|3420]]SN|15126]], Echinocactus platyacanthus, Echinocactus horizonthalonius, Ferocactus stainesiiSN|13428]]SN|13428]], Agave striataSN|23013]]SN|562]], Coryphantha roederianaSN|10045]]SN|10045]], Opuntia bulbispinaSN|10979]]SN|9853]], Opuntia chollaSN|9853]]SN|10979]], Euphorbia antisyphilitica, Agave lechuguillaSN|562]]SN|23013]]... and many other.

Common Names include:
ENGLISH: Fishhook Cactus, Twisted Ribs Cactus, Scheer's Fish-hook Cactus, Tobusch Fishhook Cactus, Root cactus
SPANISH (Español): Biznaga-bola Ganchuda

Description: Sclerocactus scheeriSN|788]]SN|788]] best known as Ancistrocactus scheeriSN|3503]]SN|787]] is a small fish-hook cactus with a large fleshy turnip root, neck-shaped grown together with the stem. The spines varies from yellow to brown and often prevent the flowers from opening fully. Flowering in early spring; flowers pale-green or yellow-green.
Habit: Solitary (unless injured) until very old age, or with few branches from ground level when old. Seedlings and immature plants often have narrowly cylindrical stems. With age, the stems broaden distally.
Stem: Cylindrical to club-shaped, or spheric, up to 17cm tall, 5-8 cm in diameter.
Spines: Radial spines 13-28 per areole, translucent yellowish, tips red-brown, longest spines 6 to 28 mm long; central spines 3-4 per areole; abaxial central spine tan to whitish 1 per areole, hooked terete or slightly flattened, generally whitish or light brown, 12-38 mm long; adaxial central spines (2-)3 per areole, brown to dark reddish brown, erect, straight, 19-50 mm long. Juvenile spines are all radials numerous, short, tightly appressed and pectinate.
Roots: Long, fleshy, tuberlike taproots, sometimes having bulbous secondary roots horizontally oriented, sausage-shaped or otherwise strongly tuberlike, but always separated from the stem by a fragile constriction, in contrast to the short, succulent, vertical taproots of Ancistrocactus brevihamatus.
Flowers: Bright green to yellowish (rarely pink to pale reddish) with a brown midline. Flowering in February-March.
Remarks: Ancistrocactus scheeriSN|787]]SN|787]] is relatively similar above ground to the related species Ancistrocactus brevihamatusSN|3503]]SN|3503]], but the roots of Ancistrocactus scheeriSN|3503]]SN|787]] are frequently horizontally oriented, strongly tuberlike and always separated from the stem by a fragile constriction, in contrast to the short, succulent, vertical taproots of Ancistrocactus brevihamatusSN|787]]SN|3503]]; and also the stems of immature Ancistrocactus brevihamatusSN|3503]]SN|3503]], are not obscured by spines and are often flush with the soil surface, whereas those of Ancistrocactus scheeriSN|787]]SN|787]] are nearly hidden by spines and fully exposed above the soil.

Ribs on the stems of Ancistrocactus scheeri seem straighter and better defined than ribs of Ancistrocactus brevihamatusSN|787]]SN|3503]], even prior to sexual maturity.

 

Ancistrocactus scheeri (llifle.com)

https://youtu.be/kzJfn4R4TRg?t=767