Part 3, 1916] CARDUACEAE: TAGETEAE 199 
6. Pectis Schaffneri Schultz-Bip.; (A. Gray, Proc. Am. Acad. 19: 45, 
hyponym. 1883) Fernald, Proc. Am. Acad. 33: 68. 1897. 
A low diffuse annual, about 5 cm. high; stem puberulent; leaves linear, cuspidate, 1—2.5 
em. long, 1-2 mm. wide, distinctly connate at the base, with 5-8 pairs of bristles; glands small 
in a single submarginal row on each side; heads sessile in the axils; involucre oblong, 6 mm. 
high, 2 mm. broad; bracts 3 or 4, oblong, acute or acuminate, purple on the margin; glands 1-3, 
subapical; ray-flowers 3; ligules oblong, 2 mm. long; disk-flowers 5 or 6; corollas about 2 mm. 
long; achenes 4 mm. long, strigose; principal squamellae 5 or 6, 3-4 mm. long, with a nar- 
rowly linear-lanceolate body anda long scabrous awn-tip, surrounded by a crown of small 
subulate bristles. 
TYPE LocaLity: Valley of Mexico. 
DISTRIBUTION: Known only from the type locality. 
7. Pectis humifusa Sw. Prodr. 114. 1788. 
Chthonia repens Cass. Dict. Sci. Nat. 27: 204. 1823. 
Pectis prostrata Spreng. Syst. 3: 572, in part. 1826. Not P. prostrata Cav. 1797. 
Pectis serpyllifolia Less. Linnaea 6: 715. 1831. 
Pectis Sieberi Less. Linnaea 6: 717. 1831. 
Lorentea humifusa Less. Linnaea 6: 719,in part. 1831. 
Chthonia humifusa Cass.; Steud. Nom. Bot. ed. 2.1: 360. 1840. 
A diffuse annual; stem branched from the base, prostrate or procumbent, sometimes 
rooting, 5-40 cm. long, short-pilose along two decurrent lines; leaves oblanceolate to obovate, 
3-12 mm. long, 2-4 mm. wide, usually rounded or obtuse at the apex, with 2-6 pairs of bristles 
towards the base, scabrous-ciliolate on the margins, paler beneath; glands numerous, minute, 
irregularly scattered; heads solitary, sessile or subsessile at the ends of the branchlets; in- 
volucre 5-6 mm. high, 2-4.5 mm. broad; bracts 5 (rarely 3), elliptic or oval, obtuse, rounded 
or retuse at the apex, strongly keeled at the base, with several round glands at the apex; 
ray-flowers 5 (rarely 3); ligules 3-5 mm. long; disk-flowers 10—25; corollas about 3 mm. long; 
achenes 2.5-3 mm. long, sparingly pubescent or glabrate; squamellae of the disk-flowers 
5-20, of the ray-flowers 2-10, lanceolate to subulate, aristate, incised, very unequal. 
Type LocaLity: Guadeloupe. 
DistriBuTion: Santo Domingo to Barbados. 
ILLUSTRATION: Plum. Pl. Am. pl. 95, f. 2. 
8. Pectis portoricensis Urban, Symb. Ant. 5: 276. 1907. 
A diffuse annual; stem branched at the base, prostrate or procumbent, rooting below, 
7-15 cm. long, short-pilose along two decurrent lines; leaves oblong-linear or linear, 1—-1.5 
em. long, 1.5-3 mm. wide, somewhat connate, with 5-12 pairs of bristles below the 
middle or along their whole length; glands small, irregularly scattered; heads solitary or in 
2's or 3’s in the forks or at the ends of the branches, sessile or on short peduncles less than 
3 mm. long; involucre 4.5—-5 mm. high, about 2 mm. broad; bracts 5, oblong, rounded or sub- 
truncate at the apex; ray-flowers 5; ligules about 1.5 mm. long; disk-flowers 5 or 6; corollas 3 
mm. long; achenes 3 mm. long; squamellae 5, those of the disk-flowers equal, of the ray- 
flowers very unequal. 
Tyre Locality: Guayamas, Porto Rico. 
DistrisutTion: Known only from the type locality. 
9. Pectis multiceps Urban, Symb. Ant. 5: 277. 1907. 
A diffuse annual; stem branched from the base, 2-6 cm. long, cespitose, densely leafy; 
leaves linear, 1-2 cm. long, 1-2 mm. wide, connate at the base, with 3-5 pairs of bristles near 
the base; glands rather few, scattered, inconspicuous; heads sessile at the ends of the branch- 
lets; involucre 5-6 mm. high, 2-2.5 mm. broad; bracts 5, linear-oblong, obtuse at the apex; 
tay-flowers 5; ligules about 2 mm. long; disk-flowers 10-12; corollas nearly 3 mm. long; achenes 
3 mm. long; squamellae of the disk-flowers 5, subequal, lanceolate, aristate-acuminate, those 
of the ray-flowers 2 or with an additional much smaller third squamella. 
‘Tyre LocaLity: Near Barrabas, between Puerto Plata and Santiago, Santo Domingo. 
Disrriution: Hispaniola. 
