Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae
Phytologia41: 43. 1978
North America, Mexico.
Genera 2, species 30 (2 genera, 27 species in the flora).
The genera of Rudbeckiinae have traditionally been included in Verbesininae (e.g., G. Bentham 1873) or in Helianthinae (e.g., T. F. Stuessy 1977). Sometimes, Rudbeckiinae has included Echinacea (e.g., P. O. Karis and O. Ryding 1994). Here, we follow H. Robinson (1981) in placing Echinacea in Ecliptinae.
In keys and descriptions for Ratibida and Rudbeckia, “discs” refers to receptacles at late flowering with paleae and florets in place and included in assessing shapes and in measurements of lengths and diameters.
|1||Involucres (early flowering) hemispheric to rotate, 15–30+ mm diam.; phyllaries 15–30+ in 2–3 series, subequal; cypselae ± 4-angled, not strongly compressed, margins not pectinate or ciliate||Rudbeckia|
|1||Involucres rotate, 8–12+ mm diam.; phyllaries 14–28+ in 2 series, unequal (outer notably longer than inner); cypselae strongly compressed, abaxial margin of each usually pectinate or ciliate||Ratibida|
|Author||Theodore M. Barkley† +, Luc Brouillet + and John L. Strother +|
|Illustrator||Yevonn Wilson-Ramsey +|
|Taxon name||Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae +|
|Taxon parent||Asteraceae tribe Heliantheae +|
|Taxon rank||subtribe +|
|Volume||Volume 21 +|