genus Thysanocarpus ge·nust·hy·sanocarpus uncommon noun 1. small genus of herbs of upland regions of the Pacific coast of North America SynonymsThysanocarpusgenus Thysanocarpus Related words Broader terms dilleniid dicot genus Parts Cruciferae Part of fringepod WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.