Fourteen new parasite-host associations are reported here, and for the first time parasites are recorded for Phrynops williamsi. This work contributes significantly to the knowledge of the ...

The scientific name is Percina williamsi, honoring the renowned biologist Jim Williams, who has been working to describe and protect freshwater species from the southeastern United States for more ...

Its scientific name is Percina williamsi, honoring renowned biologist Jim Williams who has been working to describe and protect freshwater species from the southeastern United States for more than ...

However generally spring flowering varieties namely C. Japonica and C. williamsi hybrids are hardy to -10C with the latter being more able to withstand wind and frost, flowering over a longer ...