Tetraneuris acaulis (Pursh) Greene

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Tetraneuris acaulis is a North American species of flowering plants in the sunflower family. Common names include angelita daisy, stemless four-nerve daisy, stemless hymenoxys, butte marigold, and stemless rubberweed.

T. acaulis is a highly variable perennial herb which may be quite tiny to over 60 centimeters (2 feet) in height. The erect stems are surrounded by basal leaves. The leaves are up to 7.5 cm (3 in) long, hairy or hairless, and glandular or without glands. It flowers from June to September. There may be few or many flower heads borne singly on hairy stalks. The base of each flower head is up to 1.6 cm (5⁄8 in) wide. The head contains 8 to 21 yellow ray florets each up to 2 cm (3⁄4 in) long. At the center are many yellow disc florets, sometimes 200 or more. The fruits are dry achenes only a few millimeters long. Some plants may have no ray florets.

Tetraneuris acaulis - Wikipedia

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