Part 3, 1916] CARDUACEAE: TAGETEAE 203 
ray-flowers 2, all lanceolate and lacerate at the base, often more or less splitting away from the 
awn, about equaling the disk-corollas. 
TYPE LocaLity: Near Querétaro, Querétaro. 
DISTRIBUTION: Tamaulipas to Querétaro and Panama. 
21. Pectis sinaloensis Fernald, Proc. Am. Acad. 33: 69. 1897. 
A diffuse annual; stem 0.5-3 dm. high, glabrous or hirtellous; leaves oblanceolate or 
oblanceolate-oblong, mucronate, 1-2 cm. long, 2-8 mm. wide, entire, paler beneath, with 1 
or 2 pairs of bristles near the base; glands scattered; heads solitary, terminal or in the forks; 
peduncles 2.5-6 cm. long; involucre turbinate, 4-5.5 mm. high and as broad; bracts 7—10, 
linear, more or less pubescent at the tips; ray-flowers 7—10; ligules oblong, 4-5 mm. long, yellow; 
disk-flowers 20-30; corollas 3.5 mm. long; achenes about 3.5 mm. long, sparingly appressed- 
pubescent or glabrate; squamellae of the disk-flowers 5 or 6, those of the ray-flowers mostly 2, 
with a paleaceous lanceolate lacerate base, often more or less splitting away from the awn, 
which fully equals the achene in length, or some of the squamellae, especially in the ray-flowers, 
awnless and short. 
TYPE Locality: Mazatlan, Sinaloa. 
DISTRIBUTION: Sinaloa and Tepic. 
22. Pectis salina Brand. Zoe 5: 226. 1905. 
A procumbent annual; stem purple, 2-4 dm. long, glabrous throughout; leaves narrowly 
lanceolate, long-attenuate, 2-5 cm. long, 6-8 mm. wide, glabrous, often somewhat toothed, 
with 1-6 pairs of bristles below the middle; glands small, in one row near each margin and 
-usually some additional ones nearer the midribs, either in irregular rows or scattered; heads 
terminal, peduncled at the ends of the branches or from the upper axils; peduncles 2-6 cm. 
long; involucre turbinate, 5-6 mm. high; bracts 8-12, strongly keeled, especially below, linear, 
acute, with two rows of linear glands; ray-flowers 8-12; ligules bright-yellow, 5-6 mm. long; 
disk-flowers about 40; corollas 4 mm. long; achenes 3 mm. long, hispidulous; squamellae of 
the disk-flowers 3-6, awned, with lacerate squamellose bases; those of the ray-flowers only 2. 
TYPE LOCALITY: Salt marshes about Altata, Sinaloa. 
DISTRIBUTION: Sinaloa. 
23. Pectis lancifolia (Greenman) Rydberg, sp. nov. 
Pectis sinaloensis lancifolia Greenman, Proc. Am. Acad. 40: 50. 1904. 
An annual; stem 2-4 dm. high, puberulent, purplish, with ascending branches; leaves 
lanceolate, 2-3 cm. long, 4-6 mm. wide, hirtellous on the upper surface and the midrib beneath, 
acute, entire, with 1-6 pairs of bristles towards the base; glands scattered; heads solitary in 
the forks; peduncles 7-10 cm. long; involucre turbinate, 5 mm. high, 6-7 mm. broad; bracts 
8 or 9, oblong, abruptly short-acuminate, membranous-margined, pinkish, minutely puberulent; 
ray-flowers 8 or 9; ligules golden-yellow or at first copper-colored beneath, about 7 mm. long and 
2 mm. wide; disk-flowers more than 20; corollas nearly 5 mm. long; achenes 4 mm. long, 
hirsutulous; squamellae of the disk-flowers about 5, with a squamellate, lanceolate, lacerate 
base, produced into a scabrous awn as long as the corolla; those of the ray-flowers 2, similar 
or with a few minute additional squamellae. 
Type LocaLity: Between Concepcion and Acaponeta, Tepic. 
DisTRIBuTION: Known only from the type locality. 
24. Pectis depressa Fernald, Proc. Am. Acad. 33: 71. 1897. 
A depressed annual, branched at the base, forming mats 3-4 dm. across; stem villous, 
much branched; leaves linear-oblong, 1-2 cm. long, 1.5-5 mm. wide, mucronate, ciliolate on 
the margin, slightly villous on the midrib beneath, with 3-5 pairs of bristles near the base; 
glands scattered; heads solitary in the forks and at the ends of the branches; peduncles slender, 
about 2 mm. long; involucre campanulate, 4-5 mm. high, 3-4 mm. broad; bracts 5, unequal, 
oblong-obovate, obtuse, thin, ciliate, rounded at the apex, striate, keeled at the base; ray- 
