Trifolium microdon is a species of clover known by the common name thimble clover. It is native to western North America from British Columbia to southern...

micranthum Viv. Trifolium microcephalum Pursh – smallhead clover Trifolium microdon Hook. & Arn. – thimble clover Trifolium miegeanum Maire Trifolium minutissimum...

sour clover Trifolium macraei – McCrae's clover Trifolium microcephalum – smallhead clover Trifolium microdon – Valparaiso clover Trifolium oliganthum...