Part. 2, 1915] CARDUACEAE : TAGETEAE 153 



1 1. Tagetes stenophylla B. L. Robinson, Proc. Am. Acad. 43: 44. 



1907. 



A glabrous perennial; stems erect, branched above, 6-10 dm. high, suffruticose at the 



terete, glaucescent; leaves 2-4 cm. long, pinnatifid, the lower opposite, the upper alternate; 



segments 7-13, linear or linear-oblanceolate, 5-15 mm. long, entire or incised; segments or their 



teeth apiculate or bristle-pointed, the lower ones much smaller than the upper; peduncles 



5-10 cm. long, somewhat enlarged under the involucre; involucre narrowly campanulate, 



12-13 mm. long, 4-5 mm. broad; bracts 5, with broadly triangular obtuse tips, pubescent at 



the extremity, and with two lateral rows of 5 or 6 glands each and a single gland in the free 



portion, all the glands except the uppermost elongate-linear; ray-flowers 5; ligules orange, 



10-12 mm. long, 6-8 mm. wide, obcordate, usually oblique at the apex; disk-corollas 8 mm. 



long, glabrous, except the lobes; tube shorter than the trumpet-shaped throat; lobes lanceolate ; 



achenes 3 mm. long, sparingly strigillose on the angles; squamellae 5, united, scabrous, two of 



them subulate, acute, 9-10 mm. long, nearly twice as long as the other three truncate ones. 



Type locality: Uruapan, Michoacan. 

 Distribution: Jalisco and Michoacan. 



12. 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 bristle- 

 pointed; 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; in- 

 volucre 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. 



13. Tagetes subvillosa Lag. ("Elench. 1804") Gen. & Sp. Nov. 29. 



1816. 



A branched annual; stem 3-6 dm. high, densely hirsutulous, with more or less spreading 



branches; leaves opposite or the upper alternate, pinnate, 3-6 cm. long; leaflets lanceolate or 



ovate, 1-3 cm. long, serrate, densely short-pubescent, with numerous scattered glands, acute 



at each end; heads several, cymose; peduncles 5-10 cm. long, slightly enlarged upwards; 



involucre elongate-campanulate, purple-tinged, about 12 mm. long, 5-6 mm. broad; bracts 



5 or 6, with broadly triangular, slightly pubescent tips, and with two marginal rows of about 



4 elongate-linear glands and a single orbicular one in the free portion; ligules orange, 



broadly oval, 8 mm. long, 5-6 mm. wide, notched; disk-corollas 8 mm. long; tube 2 mm. 



long, shorter than the trumpet-shaped throat; lobes lanceolate; achenes 7 mm. long, angled, 



strigulose; squamellae united below, two of them subulate, hispidulous, 6-7 mm. long, the 



other 3 linear, truncate, 4 mm. long. 



Type locality: Mexico. 

 Distribution: Southern Mexico. 



14. Tagetes zypaquirensis H. & B. PL Aequin. 2: 18. 1808. 



A tall annual; stem 3-10 dm. high, branched, terete, sparingly pilose or villous; leaves 

 opposite or the upper alternate, pinnate; rachis usually with subulate lobes or teeth; leaflets 

 9-15, 1-3 cm. long (the lower reduced), oblanceolate or elliptic, coarsely serrate, rather densely 

 short-pubescent beneath, puberulent or glabra te above, with numerous scattered glands; 

 heads many in open cymes; peduncles 3-5 cm. long; involucre elongate-campanulate, turbi- 



