Part 3, 1916] CARDUACEAE: TAGETEAE 215 
long, pubescent; pappus of the disk-flowers of 2 or 3 minute erect squamellae; that of the ray- 
flowers of 2 or 3 stout, spreading, retrorsely barbed, subulate awns. 
TYPE Locatity: Cape San Lucas, Lower California, 
DISTRIBUTION: Known only from the type locality. 
69. Pectis ambigua Fernald, Proc. Am. Acad. 33: 84. 1897. 
Pectis multisecta [misprint for P. multiseta] Vasey & Rose, Contr. U. S. Nat. Herb. 1: 72. 1890. 
Not P. multiseta Benth. 1844. 
A diffuse annual, or perhaps sometimes perennial; stem rarely more than 1 dm. high, 
branched from the base, puberulent; leaves linear or linear-oblanceolate, entire, 1.5 cm. long 
or less, with 1 or 2 pairs of basal bristles; glands usually irregularly scattered; heads in leafy 
cymes; peduncles 2-10 mm. long; involucre oblong, 3-4 mm. high, 2-3 mm. broad; bracts 5, 
linear-oblong, strongly keeled, glandular-dotted; ray-flowers mostly 5; ligules 3-4 mm. long; 
disk-flowers 5-7; corollas 2.5 mm. long; achenes 3 mm. long, sparingly hispidulous; pappus of 
the disk-flowers of a crown of minute squamellae; that of the ray-flowers of 3 unequal, subu- 
late, retrorsely scabrous, spreading awns. 
TYPE Locality: San Gregorio, Lower California. 
DistTRIBuTION: Lower California. 
70. Pectis linifolia L. Syst. Nat. ed. 10. 1221. 1759. 
Verbesina linifolia L,. Syst. Nat. ed. 10. 1226. 1759, 
Pectis punctata Jacq. Enum. Pl. Carib. 28. 1760. 
Pectidium punctatum Less., Linnaea 6: 707. 1831. 
Tetracanthus linearifolius A. Rich. in Sagra, Hist. Cuba 11: 60. 1850. 
Pectis punctata S. Wats. Proc. Am. Acad. 24: 58. 1889, 
Pectis linifolia marginalis Fernald, Proc. Am. Acad. 33: 85. 1897. 
A tall slender annual; stem 3-10 dm. high, dichotomously branched, glabrous, angled; 
leaves mostly plane, linear or narrowly linear-lanceolate, 4-6 cm, long, 2-5 mm. wide, dark- 
green above, glaucous beneath, with or sometimes without 1 or 2 pairs of bristles at the base; 
glands various, some or all elongate, along the margins, others smaller, usually scattered; 
peduncles 1-3 em. long; involucre glabrous or minutely puberulent, 5-6 mm. high, 2-4 mm. 
broad; bracts 4 or 5, linear, blunt, becoming involute, with long linear black submarginal glands; 
ray-flowers 4 or 5; ligules about 1 mm. long; disk-flowers 2-5; corollas 2-3 mm. long; achenes 
4-7 mm. long, puberulent or glabrate; pappus of 2 or 3 subulate stout divaricate smooth awns, 
2-2.5 mm. long: 
TYPE LOCALITY: Jamaica. 
DISTRIBUTION: Arizona to Lower California, Colombia, Venezuela, and West Indies. 
ILLUSTRATIONS: Sloane, Hist. Jam. pl. 149, f. 3; Lam. Tab. Encye. pl. 684; Jacq. Stirp. Am. pl. 
128 (Stirp. Am. Pict. pl. 196; Am. Gew. 3: pl. 234); Plum. Pl. Am. #1. 86, f. 1 (?; poor). 
71. Pectis imberbis A. Gray, Pl. Wright. 2: 70. 1853. 
A rigid perennial with woody root; stem sulcate, 3-10 dm. high, branched, sparingly leafy; 
leaves thick, linear, 5-7 cm. long, with prominent midrib beneath, with or without 1 or 2 pairs 
of basal bristles; glands marginal; peduncles 2-4 cm. long; involucre subcylindric, 7-8 mm, 
high, 3-4 mm. broad; bracts 5 or 6, linear, blunt, soon involute, with linear glands; ray- 
flowers 5 or 6; ligules yellow, 6-9 mm. long; disk-flowers 5 or 6 ; corollas 5-6 mm. long, each lobe 
with a dark gland; achenes puberulent, 5-6 mm. long; pappus various, usually partly of erect, 
stout, subulate awns, and partly of small squamellae more or less toothed. 
TYPE Locatiry: On the Sonoita, Sonora. 
Disrrieution: Arizona, Sonora, and Chihuahua, 
EXCLUDED AND LITTLE-KNOWN SPECIES 
PECcTIS PASCICULATA Poir. in Lam. Encye. 5:. 120 (1804), of unknown origin, may have 
come from Mexico or Central America, but no specimens have been seen from there that fully 
agree with the description. De Candolle referred it to P. prostrata. 
PECTIS GiBBOSA Llave, Reg. Trim. 1: 451 (1832) is indeterminable. 
