Asanthus thyrsiflorus explained

Asanthus thyrsiflorus is a Mexican species of plants in the family Asteraceae. It is native to the states of San Luis Potosí, Chihuahua, Zacatecas, Aguascalientes, Jalisco, Coahuila, and Durango in north-central Mexico.^{[1] [2] [3]} Asanthus thyrsiflorus is a branching shrub up to 100 cm (40 inches) tall. Flower heads have whitish disc florets but no ray florets. It grows in flats, creekbanks, and gravelly areas, often in pine-oak woodlands.^[4]

Notes and References

1. https://www.biodiversitylibrary.org/page/13126951#page/76/mode/1up King, Robert Merrill & Robinson, Harold Ernest. 1972. Studies in the Eupatorieae (Asteraceae) LXXIX: a new genus, Asanthus. Phytologia 24(2):65- 66
2. Turner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 -- Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272.
3. https://www.biodiversitylibrary.org/page/12984884#page/17/mode/1up Turner, Billie Lee 1988. Phytologia 64: 259-262
4. https://www.biodiversitylibrary.org/page/8052296#page/40/mode/1up Gray, Asa 1879. Proceedings of the American Academy of Arts and Sciences 15(1): 30