Albrecht von Haller

Digitaria is a genus of plants in the grass family native to tropical and warm temperate regions but can occur in tropical, subtropical, and cooler temperate regions as well. Common names include crabgrass, finger-grass, and fonio. They are slender monocotyledonous annual and perennial lawn, pasture, and forage plants; some are often considered lawn pests. Digitus is the Latin word for "finger", and they are distinguished by the long, finger-like inflorescences they produce.

Tragus, commonly called bur gras, burr grass or carrot-seed grass, is a genus of plants in the grass family. It is native to Africa, Australia, and Eurasia with several species on islands in the Atlantic, Indian, and Pacific Oceans plus one species in Argentina. Plants are monoecious, stoloniferous, and either annual or perennial depending on the species. The genus has been introduced in subtropical and tropical areas around the world as weeds of disturbed areas. The culms (stems) are ascending or low and mat forming, glabrous, and circular in cross-section. Blades are flat or folded and

Succisa is a genus of flowering plants in the family Caprifoliaceae. Species include the devil's-bit scabious, Succisa pratensis.

Chamaebuxus is a genus of flowering plants belonging to the family Polygalaceae. It includes six species, five from the Mediterranean region and central Europe and one from eastern North America.

Seseli is a genus of herbaceous perennial plants in the family Apiaceae. They are sometimes woody at base with a conic taproot. Leaf blades are 1–3-pinnate or pinnately decompound. Umbels are compound, with bracts few or absent. Petals are white or yellow, and the fruit ovoid or ellipsoid. There are about 140 species in the genus.

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