Verbesina

Verbesina, or crownbeard, is a genus of flowering plants, in the daisy family (Asteraceae).[4][2] It is a large genus of over 300 species.[3]

Crownbeards
Yellow ironweed Verbesina alternifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Verbesina L.
Type species
Verbesina alata L.[1][2]
Synonyms[3]
Saubinetia Remy Anomantia Raf. ex DC. Actimeris Raf. Hingstonia Raf. Achaenopodium Brand. Platypteris Kunth Ximenesia Cav. Tepion Adans. Ridan Adans. Wootonella Standl. Eupatoriophalacron Mill. Ochronelis Raf. Chaenocephalus Griseb. Saubinetia J.Rémy Abesina Neck. Ditrichum Cass. Ancistrophora A.Gray Actinomeris Nutt. Pterophyton Cass. Achaenipodium Brandegee Hamulium Cass. Phaethusa Gaertn.

All the species bear white or yellow flowers similar to small sunflowers. The name Verbesina very likely refers to the similarity of the foliage to that of the (unrelated) Verbena.[5]

Verbesina species are used as food plants by the larvae of some Lepidoptera species. These include Schinia bina, which has been recorded from V. encelioides, and Schinia siren which feeds exclusively on that species.

Pollen grains from eight of the nine species of Verbesina found in Brazil have been characterized as oblate-speroidal, medium-sized, isopolar monads. They are 3-colplorate with a subtriangular amb, a small polar area, a long colpus, a lalongate endoaperture, a caveate exine and an echinate sexine.[6]

Selected species

• Verbesina alternifolia
• Verbesina auriculigera
• Verbesina barclayae
• Verbesina brachypoda
• Verbesina chapmanii
• Verbesina dissita
• Verbesina ecuatoriana
• Verbesina encelioides
• Verbesina gigantea
• Verbesina glabrata
• Verbesina grisebachii
• Verbesina guatemalensis
• Verbesina harlingii
• Verbesina hastata
• Verbesina helianthoides
• Verbesina howardiana
• Verbesina kingii
• Verbesina latisquama
• Verbesina mameana
• Verbesina minuticeps
• Verbesina occidentalis
• Verbesina pentantha
• Verbesina persicifolia
• Verbesina petrobioides
• Verbesina pseudoclausseni
• Verbesina pustulata
• Verbesina rivetii
• Verbesina rupestris
• Verbesina saloyensis
• Verbesina subcordata
• Verbesina squarrosa
• Verbesina villonacoensis
• Verbesina virginica

References

1. lectotype designated by M.L. Green, Prop. Brit. Bot. 183 (1929)
2. Tropicos, Verbesina L.
3. Flann, C (ed) 2009+ Global Compositae Checklist
4. Linnaeus, Carl von. 1753. Species Plantarum 2: 901-903
5. Flora of North America Verbesina Linnaeus
6. Lopes Moreira, Giselle; et al. (January–March 2019). "Pollen morphology of Brazilian species of Verbesina L. (Heliantheae - Asteraceae)". Acta Botanica Brasilica. 33: 128–134. doi:10.1590/0102-33062018abb0395.