Acmella Rich. ex Pers. (1 images; © 2014 Jan Thomas Johansson)

Ambrosia L. (48 images; © 2014 Jan Thomas Johansson)

Bahiopsis Kellogg (9 images; © 2014 Jan Thomas Johansson)

Berlandiera DC. (6 images; © 2014 Jan Thomas Johansson)

Cyclachaena Fresen. (5 images; © 2014 Jan Thomas Johansson)

Echinacea Moench (5 images; © 2014 Jan Thomas Johansson)

Eclipta L. (2 images; © 2014 Jan Thomas Johansson)

Encelia Adans. (21 images; © 2014 Jan Thomas Johansson)

Geraea Torr. & A.Gray (6 images; © 2014 Jan Thomas Johansson)

Helianthella Torr. & A.Gray (5 images; © 2014 Jan Thomas Johansson)

Helianthus L. (55 images; © 2014 Jan Thomas Johansson)

Heliopsis Pers. (6 images; © 2014 Jan Thomas Johansson)

Lagascea Cav. (3 images; © 2014 Jan Thomas Johansson)

Lindheimera A.Gray & Engelm. (10 images; © 2014 Jan Thomas Johansson)

Lipochaeta DC. (5 images; © 2014 Jan Thomas Johansson)

Melanthera Rohr (7 images; © 2014 Jan Thomas Johansson)

Parthenium L. (4 images; © 2014 Jan Thomas Johansson)

Podanthus Lag. (5 images; © 2014 Jan Thomas Johansson)

Ratibida Raf. (6 images; © 2014 Jan Thomas Johansson)

Rudbeckia L. (12 images; © 2014 Jan Thomas Johansson)

Sanvitalia Lam. (4 images; © 2014 Jan Thomas Johansson)

Scalesia Arn. (22 images; © 2014 Jan Thomas Johansson)

Silphium L. (13 images; © 2014 Jan Thomas Johansson)

Sphagneticola O.Hoffm. (9 images; © 2014 Jan Thomas Johansson)

Spilanthes Jacq. (7 images; © 2014 Jan Thomas Johansson)

Synedrella Gaertn. (4 images; © 2014 Jan Thomas Johansson)

Tithonia Raeusch. (4 images; © 2014 Jan Thomas Johansson)

Verbesina L. (14 images; © 2014 Jan Thomas Johansson)

Viguiera Kunth (15 images; © 2014 Jan Thomas Johansson)

Xanthium L. (22 images; © 2014 Jan Thomas Johansson)

Zinnia L. (41 images; © 2014 Jan Thomas Johansson)