Part 2, 1915] CARDUACEAE : TAGETEAE 151 



3. Tagetes Seleri Rydberg, sp. nov. 



A glabrous perennial; stems about 3 dm. high, slightly striate; leaves opposite, simple, 

 linear, 4-7 cm. long, finely and densely serrate, acute, sessile, with scattered small glands, 

 the lower teeth usually long and slender, subulate; heads in dense cymes, short -peduncled; 

 involucre about 5 mm. long, 2 mm. broad, sparingly pilose when young; bract-, about 5, united 

 up to the triangular-subulate tips; ray-flowers 3; ligules orbicular-flabellate, 3 mm. long and 

 wide; disk-corollas about 5 mm. long; tube somewhat shorter than the trumpet-shaped 

 throat; achenes 4 mm. long, glabrous; squamellae 5 or 6, two of them bristle-like, 3 mm. long, 

 the rest oblong, obtuse, 1-1.5 mm. long. 



Type collected at Comitan. Chiapas. August 14, 1S96, Seler 3085 (herb. X. V. Hot. Gard.). 

 Distribution: Vera Cruz and Chiapas. 



4. Tagetes Schiedeana Less. Linnaea 9: 271. 1834. 



? Tagetes Pineda Llave, Reg. Trim. 1: 358. 1832. 



A glabrous perennial; stems 3-6 dm. high, terete, cymosely branched above; leaves oppo- 

 site, simple, narrowly linear, decidedly acute, with scattered inconspicuous glands, finely 

 serrate, the lower teeth often elongate, subulate; heads in open cymes; peduncles 1-2 cm. long; 

 involucre subcylindric, 1-7 mm. long, 2.5-3 mm. broad, glabrous, with scattered glands; 

 bracts 5-7, linear, with deltoid-subulate tips; ray-flowers about 3; ligules flabelliform, 3 mm. 

 long and wide; disk-corollas 4-5 mm. long; tube about equaling the trumpet-shaped throat; 

 lobes lanceolate; achenes 6 mm. long, semi-terete, slightly hispidulous on the 2 angles, other- 

 wise glabrous; two of the squamellae bristle-shaped, 3-4 mm. long (rarely only 2 mm. long), 

 the rest oblong or oval, truncate, about 1 mm. long. 



Tvpe locality: Hacienda de !a Laguna [Vera Cruz]. 

 Distribution: Vera Cruz; Guatemala. 



5. Tagetes Pringlei S. Wats. Proc. Am. Acad. 23: 279. 1888. 



A glabrous annual; stem cymosely branched, 5-7 dm. high; leaves opposite, simple, linear, 

 sessile and somewhat connate-clasping at the base, 5-10 cm. long, rather distantly serrate, the 

 lower teeth ciliate-tipped; heads few in open cymes; involucre cylindro-elliptic, slightly nar- 

 rowed at both ends, glandular-punctate only above the middle; bracts 5, with triangular some- 

 times apiculate tips; ray-flowers 2-4; ligules slightly exceeding the disk, 2 mm. long, erect; 

 disk-corollas 5 mm. long; tube equaling the trumpet-shaped throat; achenes 6 mm. long, 

 slightly scabrous on the angles; 2 or 3 of the squamellae bristle-like, 6 mm. long, the other 

 3 or 2 oblong, 1.5 mm. long. 



Type locality: Base of Sierra Madre. Chihuahua. 

 Distribution: Chihuahua to State of Mexico. 



6. Tagetes Parryi A. Gray, Proc. Am. Acad. 15: 40. 1879. 



A branched bushy perennial; stems finely puberulent, often tinged with red or purple; 

 leaves pinnate; leaflets 5-7, sessile, oval or elliptic, about 1 cm. long, serrate, densely puberu- 

 lent, with a gland in each tooth and a row of glands on each side of the midrib, or the glands 

 scattered; heads solitary on peduncles which are about 1 dm. long, gradually and strongly 

 enlarging upwards, at the top as thick as the involucre; involucre subcylindric, about 12 mm. 

 long and 7 mm. broad; bracts 8-10, with two lateral rows of glands and a single gland in the 

 free tip, the lower glands linear, the upper oblong; ray-flowers S; ligules obovate, 10-12 mm. 

 long; disk-flowers many; corolla-tube 1 mm. long, puberulent; throat narrowly funnelform, 

 as well as the lanceolate lobes glandular-hispidulous and 2 mm. long each; achenes 6 mm. 

 long, somewhat flattened, glabrous; 1 or 2 of the squamellae subulate, 1.5 mm. long, the 

 rest oblong, truncate, 1 mm. long. 



Type locality: Hilly district southeast of San Luis Potosi. 

 Distribution: San Luis Potosi. 



