Tagetes hartwegii Greenm.

Tagetes hartwegii Greenman, Proc. Am. Acad. 40: 46. 1904
Tagetes peduncularis Benth. PI. Hartw. 17. 1839. Not T. peduncularis Cav. 1802.
An erect glabrous perennial; stems 8-9 dm. high, from a woody base; leaves opposite, pinnate, 2-8 cm. long; leaflets linear-lanceolate, acute, serrate-dentate, the teeth often bristlepointed; glands in a single row on each side of the leaflet at the base of the teeth; heads on long peduncles terminating the stem and branches; peduncles slender, 5-10 cm. long; involucre subcampanulate, 10-12 mm. long, 6-8 mm. broad; bracts about 8, with obtuse, slightly pubescent tips, the glands oblong, about 4 in each lateral row and a single one in the free portion; ray-flowers 8; ligules 12-15 mm. long. 7-11 mm. wide, emarginate, deep-orange; disk-flowers 35-45; corollas 6 mm. long; tube pubescent; throat glabrous; lobes 5, lanceolate, pubescent along the margins; achenes 6 mm. long, glabrous; pappus of the ray-flowers of 1-5, narrow, unequal, paleaceous awns, that of the disk-flowers much reduced or obsolete.
Type locality: Bolanos, Jalisco. Distribution: Jalisco.

Tagetes hartwegii is a Mexican species of marigolds in the family Asteraceae.

It is endemic to the states of Jalisco and Nayarit in western Mexico.

Tagetes hartwegii là một loài thực vật có hoa trong họ Cúc. Loài này được Greenm. miêu tả khoa học đầu tiên năm 1904.