R. M. King & H. Robinson

Phytologia 24: 67. 1972.

Etymology: For Lowell David Flyr, 1937–1971, Texan, synantherologist
Treatment appears in FNA Volume 21. Treatment on page 507. Mentioned on page 461.

Perennials, 20–60[–200] cm (plants ± viscid). Stems erect, simple or branched from bases or ± throughout. Leaves cauline; mostly opposite (distal sometimes alternate); petiolate; blades usually 3-nerved from bases, deltate to ovate, margins dentate to serrate, faces usually hirsute and/or stipitate-glandular. Heads discoid, in paniculiform to corymbiform arrays. Involucres ± cylindric [campanulate or hemispheric], 4–5+ mm diam. Phyllaries persistent, 24–30+ in 3–5+ series, 3–5-nerved, ovate to lance-linear, unequal (herbaceous to chartaceous). Receptacles flat, epaleate. Florets 10–30[–75]; corollas white to ochroleucous, throats ± cylindric (± contracted distally, lengths 4–6 times diams.), lobes 5, oblong-ovate; styles: bases enlarged, hirsute, branches narrowly clavate (distally dilated). Cypselae prismatic, 4–5-ribbed, sparsely scabrellous (at least distally), not gland-dotted; pappi persistent, of 20–40 smooth to barbellate bristles in 1 series. x = 10.


Tex., Mexico.


Species 6 (1 in the flora).

Lower Taxa