Part 2, 1915] CARDUACEAE: TAGETEAE 157 



25. Tagetes Wislizeni A. Gray, Mem. Am. Acad. II. 4: 92. 1849. 



A slender annual; stem usually less than 2 dm. high, glabrous; leaves alternate or the lower 

 opposite, pinnate, 2-3 em. long; leaflets 7-13, linear lanceolate or elliptic, less than 1 cm. long, 

 serrate or incised, the upper leaves usually with bristle-pointed teeth; heads rather few; pe- 

 duncles filiform, 2-4 cm. long; involucre subcylindric, acute at the base, about 12 mm. long 

 and 3 mm. broad; bracts 4-5, with lanceolate tips, and with two' irregular rows of 2-4 oblong 

 or linear glands and a single oval gland in the free portion; ray-flowers 2-4; ligules sub- 

 orbicular, 2 mm. long; disk-flowers about S; corollas puberulent, 5 mm. long; tube shorter 

 than the trumpet-shaped throat; achenes 6-7 mm. long, puberulent; squamellae 5, 2 of them 

 subulate, 5-6 mm. long, the remainder linear, truncate, 2 mm. long. 



Type locality: Mountains around Cosiquiriachi, west of Chihuahua. 

 Distribution: Chihuahua. 



26. Tagetes microglossa Benth. Bot. Voy. Sulph. 118. 1845. 



Tagetes macroglossa Polak. Linnaea 41: 580. 1877. 



A slender glabrous annual; stem 2-3 dm. high; leaves pinnate, the lower opposite, the 

 upper alternate; leaflets 7-11, oblanceolate, 1-2 cm. long, sharply serrate except at the narrowed 

 base; heads rather few, cymose; peduncles 3-5 cm. long; involucre subcylindric, 15-16 mm. long, 

 about 4 mm. broad; bracts 5, with deltoid obtusish tips, and with two lateral rows of 5 or 6 

 oblong glands and a single one in the free portion; ray-flowers 3-5; ligules small, ascending; 

 disk-corollas 7 mm. long; throat trumpet-shaped; achenes 8-9 mm. long, hispidulous on the 

 angles; 1 or 2 of the squamellae subulate, 8-9 mm. long, the remaining 3 or 4 half as long, 

 linear and truncate. 



Type locality: Salango [Ecuador]. 

 Distribution: Guatemala to Ecuador. 



27. Tagetes triradiata Greenman, Proc. Am. Acad. 32: 310. 1897. 



A glabrous annual; stem 3-5 dm. high, sulcate, striate, tinged with purple, with ascending 

 branches; leaves pinnate, mostly opposite, the upper alternate; leaflets 15-21, narrowly lanceo- 

 late or oblanceolate, serrate, often with bristle-pointed teeth, 10-16 mm. long; heads cymose- 

 paniculate; peduncles 2-3 cm. long; involucre subcylindric or somewhat fusiform, 10-15 mm. 

 long, 4 mm. broad, greenish-purple; bracts 3-5, with deltoid obtuse tips, and with two lateral 

 rows of 4 or 5 linear glands and 2-4 glands in the free portion; ligules bright-yellow, flabelliform, 

 2-3 mm. long, retuse or 3-lobed; disk-corollas puberulent, 6 mm. long; achenes 6-7 mm. long, 

 appressed-hispidulous; pappus variable, the squamellae usually 6, 1-3 (rarely 4 or 5) of them 

 subulate, hispidulous, 5-6 mm. long, and the rest linear, truncate, about half as long. 



Type locality: Pedigoal, Valley of Mexico. 

 Distribution: Mexico (State) to Vera Cruz. 



28. Tagetes jaliscana Greenman, Proc. Am. Acad. 40: 47. 1904. 



Tagetes jaliscana minor Greenman, Field Mus. Publ. Bot. 2: 273. 1907. 



An erect glabrous annual; stem 3-5 dm. high, simple and terete below, branched and 

 striate above, sometimes purple- tinged; leaves opposite below, alternate above, 3-10 cm. 

 long, pinnate; leaflets 9-15, narrowly lanceolate, sharply serrate, the lower teeth often bristle- 

 pointed; glands scattered; heads corymbose-cymose; peduncles 2-4 cm. long; involucre sub- 

 cylindric, slightly fusiform, 15-17 mm. long, 4 mm. broad; ray-flowers 5; ligules orange, 

 cuneate-oblong, 5-6 mm. long and nearly as wide, emarginate; disk-flowers about 12; corolla- 

 tube shorter than the puberulent, trumpet-shaped throat; lobes lanceolate, pubescent; achems 

 8-9 mm. long, puberulent; 2 of the squamellae subulate, S-10 mm. long, fully twice as long 

 as the rest, which are linear and truncate. 



Type locality: Dry rocky mountains above Etzatlan, Jalisco. 

 Distribution: Known only from the type locality. 



