Derrumbes, Landslide mushroom, Derrumbito

Psilocybe caerulescens, commonly called the “landslide mushroom” or “derrumbes”, meaning “collapse” in Spanish, is a bluish bruising magic mushroom that has the tendency to grow on disturbed or cultivated grounds. With its silvery-blue metallic glow, P. caerulescens has a very expressive stature and its cap undergoes considerable variation in coloration and shapes.
As if growing on collapsing ravines isn’t impressive enough, P. caerulescens can also grow to impressive sizes. Many indigenous tribes of Mexico have a close relationship with this shamanic mushroom resulting in hundreds of years of nick-names. From the Mazatec’s “dishitjokisho” (sacred mushroom of landslides), the Mixe’s “kang” (lord governor), to the Zapotec’s “razon bei” (mushroom of reason), to Nahuatl’s “teoteaquilnanácatl” (divine mushroom that paints and describes), the tight bond is obvious, just as much as the visual hallucinations effects are. With no doubt, P. caerulescens is a shamanic mushroom.

Alongside Psilocybe aztecorum, P. caerulescens is believed to be one of the probable candidates reported in the manuscripts of Spanish explorer Bernardino de Sahagún when referring to teonanacatl or the “flesh of the gods” by the Aztecs. Along with its entheogenic qualities, it is also a medicinal fungus that is said to have anti-viral properties.

It is said that thirteen pairs of P. caerulescens were ingested by R. Gordon Wasson during a Velada ceremony guided by renown Mazatec healer Maria Sabina (there were also some P. mexicana specimens). Since the mushroom grows in that region and has a close relationship with the Mazatec people, it is also called Psilocybe caerulescens var. mazatecorum, and is also commonly called the Mazatepec mushroom.

After centuries of shamanistic use by the great ancient civilizations of Mexico, P. caerulescens is a medicinal magic mushroom that has undeniable potential for wellness and performance. Alongside other sacred mushrooms such as Psilocybe aztecorum and P. mexicana, the “landslide mushroom” has made its proof it can be an ally when it comes to healing both body and soul.

To this day, Psilocybe caerulescens is consumed by the Mazatec shamans to heal and travel within. P. caerulescens  is considered to be a good entry-level magic mushroom specie for beginner psychonauts.

Visual Description

• Cap: 2-9 cm broad. Obtuse bell shaped, rarely plane with age. Often with a small umbo or a depression at the disk area. Margins often bluish. Radial translucent striates between the apex and the margin. Color is deep olive black when young, strongly hygrophanous, fading with age to dark reddish brown or chestnut brown near the disk, often darker on the margins. Surface is smooth, lubricous when moist. Flesh whitish to brown and bruising bluish. • Gills: Attachment sinuate (curvy) to adnate, close and broad. Color grayish to brown with whitish edges. • Stem: 10-120 mm long by 2-10 mm thick. Color at first fibrillose whitish then sordid brown, smooth under the fibrillose layer. Flesh stuffed and fibrous, bruising bluish. Rhizomorphs at the base of the stem also bruising bluish when disturbed. Stem doesn’t have a permanent annulus. • Spore print: dark purplish brown. • Microscopic features: 6-8 x 4-6 micrometres. • Taste and odor: said to taste very bitter while some specimens lack distinctive flavors.


MODERATE 0.25% - 0.75% HIGH > 0.75% - 2% Moderately to highly active. Analyses from aged specimen show low levels of 0.20% psilocybin, 0% psilocin.

Habitat Origin

Widespread throughout central regions of Mexico, Venezuela and Brazil. Rarely solitary, found in the late spring and summer on disturbed grounds, preferring muddy orangish brown soils, devoid of herbaceous plants. Originally found in Montgomery and Alabama in 1923 by Murrill and not redescribed from that area since. Found in South Carolina in 2008, believed to be widespread throughout North Georgia.


It is considered to be a good entry-level specie for psilocybin experiences. Velada, which means evening in Spanish, is a sacred ceremony mediated by healers or curanderas/curanderos. The mushrooms are consumed in pairs to symbolize the universal duality, and only at night, under the safe veil of the darkness. In his article "Seeking the Magic Mushroom", Wasson described an "out of body experience" with intense visuals and vibrating bodily sensations. He also said that the next day, he felt clear-headed and changed, what we may call the after-glow.

Other Strains you may like