Echinomastus dasyacanthus (Engelm.) Britton & Rose

국표에 없다

Origin and Habitat: USA, Southwestern Texas ( Trans-Pecos restricted to the Franklin Mountains of in El Paso Co.), central and south-western New Mexico, Otero Co. (JariIla Mts) N to Bernalillo Co., W to Luna Co. (Florida Mts) and Hidalgo Co. (Little Hatchet Mts) and in extreme northern Chihuahua (Mexico).
Type locality: Near El Paso, Texas.
Altitude: 1100-2100 metres above sea level.
Habitat: It grows in isolated population in the desert grasslands and upper edge of Chihuahuan desert scrub, grassy hill slopes, sometimes with oaks and junipers, igneous substrates (rarely limestone) It intergrades with both typical Echinomastus intertextusSN|32469]]SN|11304]] and Echinomastus warnockiiSN|11304]]SN|32469]] giving rise to intermediate populations.

Common Names include:
ENGLISH: White-flowered visnagita, White biznagita, Early bloomer cactus

 

Description: Echinomastus intertextusSN|11304]]SN|11304]] subs. dasyacanthus is one of the local or morphological form of Echinomastus intertextusSN|11304]]SN|11304]] identifiable by its shaggy appearance. It is simply a larger form, with relatively long, protruding spine which contrasts with the smooth aspect of typical E. intertextus. These spines obscure the stem giving the plant a pale brownish appearance. Besides this subspecies has much larger flowers and the inner perianth-segments are acute or acuminate. It has also a more northern and eastern range. The flowers, fruits, and seeds of var. dasyacanthus appear to be identical to those of var. intertextus.
Habit: Almost always solitary, although they may occasionally branch once or twice, possibly as the result of injury.
Roots: Diffuse
Stem: Green, globose to ovoid to cylindrical, (7-)10-15(-17) cm or more long when sexually mature and 2-9 cm in diameter. Top of flowering plant and young areoles very woolly.
Ribs: About 13, somewhat spiraled, made up of numerous compressed tubercles.
Areoles: Elliptic to nearly circular with felted areolar groove.
Spines: slender, more or less purplish
Central spines: About 4, slightly thicker than the radials, of which 1 porrect lower central, others spreading, 4-15 mm long, 0,2-0,5 mm thick, grey, or brownish with dull red, reddish, or pink-tinged tips, at first purplish red, passing to bluish grey and contrasts nicely with the paler radial spines. The, reddish inner layers and spine tips may lend whole stems a dull and dark reddish hue, especially when the spines are wet.
Radial spines: 16-24 slightly appressed to spreading, 8-2,4(-3) cm long (longer than those of var. intertextus). Color: As the centrals, but usually whiter. In in juveniles plants the radials are glabrous, somewhat appressed and the, the porrect lower central spine is often absent.
Flowers: As many as 20 simultaneously on the apex of a single stem, blooming in succession, several (up to about six) at a time, broadly funnelform, 2,3-3,0 cm long, 2,5-3 cm in diameter, white , often with pinkish midregions and tinge. Scales and outer perianth-segments red with white margins. Inner perianth-segments white or purplish, about 2,5 cm. long, acute or acuminate; ovary bearing a few ovate scales. Filaments pale green; Anthers cream yellow. Style greenish, stigma-lobes 9, erect, truncate at apex bright red or pink.
Flowering season: Early spring. (in habitat late February through early April) for as many as 30 days. Individual flowers close at night and reopen for 2-3 days.
Fruits: Globose to ovoid fruits, 8-15 mm green but upon ripening may turn tan to dull or pale reddish through-out or at the apex..
Seeds: Glossy black, papillate, nearly spherical to reniform seeds, 1 mm.

 

https://youtu.be/nl5G0mMkwxc?t=3005

 

 

 

Echinomastus dasyacanthus (llifle.com)

 

 

 

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