Paxillus 桩菇菌属
Paxillus \Pax*il"lus\, n.; pl. {Paxilli}. [L., a peg.]
(Zo["o]l.)
One of a peculiar kind of spines covering the surface of
certain starfishes. They are pillarlike, with a flattened
summit which is covered with minute spinules or granules. See
Illustration in Appendix.