Part 2, 1915] CARDUACEAE : TAGETEAE 156 



achenes 7 mm. long, hispidulous; squamellae united, 1 of them subulate, 6 mm. long, the 



rest half as long, linear and truncate. 



Type locality: Mexico. 

 DISTRIBUTION: Mexico and Guatemala. 



Illustrations: Dill. Hon. Kith. pi. 27 ( >, f, 361; Bot. Mag. pi. 150, 3830; Sweet. Brit. Ft 

 Gard. pi. 151; Schkuhr, Handb. pi. 251; Baillon, Hist. P1.8:/. 'Jt>. 



18. Tagetes remotiflora Kunzc, Linnaea 20: 23. 1847. 



A glabrous annual; stem 3-7 dm. high, branched above, striate; leaves pinnate, 5-10 

 cm. long, the lower opposite, the upper alternate: leaflets 9-2.5, linear-lanceolate or lanceol 

 1-3 cm. long, sharply serrate, the teeth of the upper leaves often bristle-pointed; glands scat- 

 tered, not numerous; heads in open leafy cymes; peduncles 5-10 cm. long, not enlarged up- 

 wards; involucre narrowly campanulate, 13-14 mm. long, 5-6 mm. broad; bracts mostly 5, 

 with triangular, obtuse, ciliolate tips, and with two marginal rows of 4 glands each and 3 glands 

 in the free portion, the lower glands linear, the upper elliptic; ray-flowers 5; ligules obovate, 

 retuse, about 1 cm. long; disk-corollas about 10 mm. long; tube shorter than the trumpet-shaped 

 puberulent throat; squamellae united below, 2 of them subulate, 10 mm. long, hispidulous, 

 the other three about half as long, linear and truncate. 



Type locality: Cultivated from Mexican seeds. 

 Distribution: Vera Cruz to Yucatan and Costa Rica. 



19. Tagetes elongata Willd. 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. 



20. Tagetes tenuifolia Cav. Ic. 2: 54. 1793. 



Tagetes signata Bartl. Ind. Sem. Hort. Goett. 1837: 7. 1837. 



A slender annual; stem 3-8 dm. high, somewhat branched above (copiously so in a 

 garden form, T. signata), terete, glabrous; leaves all opposite or the upper alternate, pinnate; 

 leaflets 13-23, narrowly linear-lanceolate, 1-2 cm. long, coarsely serrate, with a single row of 

 glands on each side; heads cymose; peduncles 5-10 cm. long; involucre elongate-campanulate, 

 11-14 mm. long, 4-5 mm. broad; bracts about 5, with triangular, acute tips, and with two 

 lateral rows of 3 or 4 glands each and 3 glands in the free portion, the lower glands linear, the 

 upper oval; ligules 7-8 mm. long, retuse; disk-corollas puberulent. 7 mm. long; achenes 7 mm. 

 long, strigose; 1 or 2 of the squamellae subulate, 6 mm. long, nearly twice as long as the 

 others which are linear and truncate. 



Type locality: "Peru" [hut probably Mexico]. 

 Distribution: San Luis Potosi to Colombia. 



Illustrations: Cav. Ic pi. 169; Bot. Mag. pi. 2045; Rev. Hort. 1863: pi. opp. 11: Sweet, 

 Brit. Fl. Gard. pi. 141. 



21. Tagetes heterocarpha Rvdberg, sp. nor. 



A glabrous annual; stem slender, branched, 3-6, dm. high, often purple-tinged; leaves 

 opposite or the upper alternate, pinnate, 5 8 cm. long; leaflets 7-9, elliptic, oval, or lanceo- 



