Buerger Pipewort Flower

The principal constituent is eriocaulin.

The aqueous infusion of Eriocaulon shows varying degrees of inhibition in vitro against Microsporum audouinii, Microsporum ferrugineum, and related fungi. The aqueous infusion of Eriocaulon sexangulare also inhibits dermatophytes such as Epidermophyton floccosum, Microsporum lanosum, Trichophyton spp., and Microsporum gypseum (by the tube double-dilution method). A 100% decoction of Eriocaulon (species unidentified) has a relatively strong effect against Pseudomonas aeruginosa, with an effective concentration of 1:320 (tube method), but weak effects against pneumococci and E. coli.

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