Tagetes elongata Willd.

Tagetes elongata Wilid. Sp. PI. 3: 2127. 1S04
? Tagetes peduncularis Cav. Descr. 201. 1802.
A slender glabrous annual; stem 3-6 dm. high, terete, branched; leaves pinnate, 5-7 cm.
long, the lower opposite, the upper alternate; leaflets 9—1 7, linear-oblanceolate or oblanceolate,
or of the lower leaves cuneate, 1-2 cm. long, with salient teeth; teeth of the upper leaves
usually bristle-tipped; glands solitary at the base of each tooth and some scattered on the
surface; heads in open leafy cymes; peduncles 5-10 cm. long; involucre often tinged with
purple, elongate-campanulate, about 12 mm. long and 6 mm. broad; bracts mostly 5, with
triangular, acuminate or acute tips, and with two marginal rows of about 4 linear glands
each and 3 short oval ones in the free portion; ligules about 10 mm. long, 6 mm. wide, emargin-
ate; disk-corollas about 6 mm. long, glabrous; tube shorter than the trumpet-shaped throat;
achenes 8 mm. long; 2 of the pappus-squamellae subulate, 5 mm. long, the other 3 half as
long, linear and truncate.
Type locality: Tropical America.
Distribution: San Luis Potosi and Zacatecas to City of Mexico and Vera Cruz.

Tagetes elongata is a Latin American species of marigolds in the family Asteraceae. It has been found in central and southern Mexico from San Luis Potosí and Zacatecas south to Chiapas.

Tagetes elongata is an annual herb up to 60 cm (2 feet) tall. Leaves are pinnately compound with 9-17 toothed leaflets. The plant produces numerous flower heads in flat-topped arrays, yellow, each head containing ray florets surrounding disc florets.

Tagetes elongata là một loài thực vật có hoa trong họ Cúc. Loài này được Willd. miêu tả khoa học đầu tiên năm 1803.