Crusea

Belongs within: Spermacoceae.

Crusea, saucer flowers, is a genus of small annual plants found in southern North America.

<==Crusea
    |--C. coronataF79
    `--+--+--C. coccineaF79
       |  |    |--C. c. var. brevilobaF79
       |  |    `--+--C. c. var. coccineaF79
       |  |       `--C. c. var. chiriquensisF79
       |  `--C. megalocarpaF79
       `--+--C. diversifoliaF79
          `--+--C. lucidaF79
             `--+--C. parvifoliaF79
                |--C. psyllioidesF79
                `--+--C. calcicolaF79
                   |--C. setosaF79
                   `--+--C. wrightiiF79
                      `--+--C. longifloraF79
                         `--+--C. ‘wrightii var.’ angustifoliaF79
                            `--+--C. calocephalaF79
                               `--C. hispidaF79
                                    |--C. h. var. hispidaF79
                                    `--C. h. var. grandifloraF79

*Type species of generic name indicated

References

[F79] Farris, J. S. 1979. Review: Cladistics and Plant Systematics. Systematic Zoology 28 (3): 400–411.