McKennaii — A Strain Named in Honour of Terence McKenna
McKennaii is one of the better-known Psilocybe cubensis varieties associated with the European mushroom scene. Its name is a tribute to Terence McKenna, the American ethnobotanist, author and philosopher who played a prominent role in popularising discussion and research surrounding psychoactive fungi.
The precise origins of the McKennaii strain are not completely documented. Several stories circulate regarding its development and naming, although the most commonly repeated account attributes its creation to a European cultivator who chose the name in McKenna’s honour. Whatever its exact history, McKennaii has established a distinctive identity among cubensis varieties.
Appearance
McKennaii is particularly recognisable for its darker colouring. The caps can range from rich golden brown to deep chestnut shades and often develop an irregular, slightly undulating form.
Its stems are typically substantial and pale in colour, creating a strong contrast with the darker caps. Mature specimens can form compact groups, giving the variety a noticeably robust appearance compared with lighter-coloured cubensis cultivars.
Characteristics
McKennaii is appreciated by enthusiasts for its distinctive appearance and established place within the wider Psilocybe cubensis family. It is often compared with familiar varieties such as Golden Teacher and B+, particularly because of its darker visual profile.
Its popularity has made McKennaii a familiar name in European mushroom culture, particularly among collectors and enthusiasts interested in the history and diversity of cubensis genetics.
What to Expect from This FreshMushrooms® Kit
The FreshMushrooms® McKennaii kit contains a prepared, fully colonised substrate, offering a convenient format for customers interested in this particular variety. The kit is supplied in a practical growing format and includes the components required for its intended use. Before purchasing or using the product, check the applicable local laws and follow the manufacturer’s documentation and safety guidance.
Why Choose McKennaii?
- Distinctive appearance — darker caps and sturdy, pale stems give McKennaii a characteristic look.
- Recognised genetics — one of the more established cubensis varieties found in European mushroom culture.
- Interesting history — named as a tribute to Terence McKenna and surrounded by several accounts of its origins.
- FreshMushrooms® format — supplied as a prepared, fully colonised kit.
- Popular European variety — a familiar choice for enthusiasts exploring different cubensis cultivars.
What’s in the Box
- 1 × 1200 ml grow box containing fully colonised substrate
Important: Laws governing Psilocybe species and products containing psilocybin vary considerably across Europe. Check the regulations applicable in your country before purchasing, possessing or using this product.










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