Lanmaoa asiatica

Lanmaoa asiatica is a striking reddish-capped bolete native to the subtropical forests of southwestern China, where it ranks among the most sought-after wild edibles. Instead of gills, the underside of its cap carries a sponge-like layer of yellow pores that are reported to bruise blue when handled. In Yunnan Province it is prized as a choice edible, but only after thorough cooking, since undercooked specimens have been linked to hallucinations and stomach upset.

History

The species was formally described in 2015 by the mycologists G. Wu and Zhu L. Yang, who placed it in the then newly recognized genus Lanmaoa. The genus name honors Lan Mao, a 15th-century herbalist from Yunnan whose writings documented the region's edible fungi. Locally, Lanmaoa asiatica is sold under the market name "jian shou qing" (see-hand-blue), a label shared by several blue-bruising boletes that Yunnan cooks consider even more desirable than European porcini.

Overview

Like most boletes, Lanmaoa asiatica is ectomycorrhizal, forming partnerships with the roots of forest trees, which makes it difficult to cultivate and keeps supply tied to seasonal wild harvest. It has drawn scientific attention because some reports associate undercooked specimens with temporary hallucinations, though the responsible compounds have not been confirmed and researchers caution that the phenomenon needs further investigation. For cooks the practical takeaway is simple: it is a celebrated ingredient when fully cooked and a cause of illness when it is not.