GREENMAN. — CENTRAL AMERICAN SPERMATOPHYTES. 49 
ous-margined, obtusely keeled toward the base: ray-flowers about 13; 
pappus of 2 slender setae; tube 1.5 mm. long, puberulent; rays oblong, 
5 to 6 mm. long, yellow; style-branches greenish: disk-flowers 40 to 
45; pappus of 5 slender subequal setae and numerous shorter unequal 
setae, often purplish: mature achenes 3 mm. long, inconspicuously puber- 
ulent.— Mexico. State of Chihuahua: in the Sierra Madre near 
Colonia Garcia, altitude 2285 m., 19 August, 1899, Townsend & Barber, 
no. 269 (hb. Gr.), distributed “ Pectis longipes, Gray ” ; between Colonia 
Garcia and Pratt’s Ranch, below Pacheco, 22 to 24 August, 1899, 
E. W. Nelson, no. 6269 (hb. Gr., and hb. U. S. Nat. Mus.). 
P. longipes, Gray, to which the Townsend & Barber plant was referred 
is distinctly a perennial ; its stems are ascending or erect, usually branched 
and more or less leafy; the leaves, moreover, are linear or linear-lanceo- 
late. P. Barberi on the other hand is clearly an annual, with scapoid 
habit and rosulate oblanceolate leaves ; it is one of the most clear cut 
species of the genus. 
Pectis (§ Eupectis) propetes, n. sp. Low annual, usually pros- 
trate and much-branched: stems puberulent in lines, purplish: leaves 
narrowly oblong to oblanceolate, 1 to 3.5 cm. long, 2 to 5 mm. broad, 
obtuse or mucronate-acute, entire, setiferous-ciliate toward the base, 
inconspicuously hirtellous-margined, pale green and glabrous on both 
surfaces: glands of the leaves scattered: heads 8 to 10 mm. high, on 
puberulent’ peduncles 4.5 cm. or less in length: involucre subcylindrical, 
6 to 7.5 mm. high, glabrous; bracts of the involucre 5, oblong, obtuse 
or truncate at the apex, scarious-margined, obtusely keeled toward the 
base, green or slightly purplish: ray-flowers 5, conspicuous ; pappus 
commonly of 2 lanceolate pales; rays including the tube 8 to 9 mm. 
long, yellow, in the early stages slightly tinged with purple on the under 
or outer surface: disk-flowers 20 to 25; pappus of 4 or 5 lance-acu- 
minate pales about one-half as long as the subbilabiate corollas: achenes 
about 4 mm. long, pubescent.—-Mextico. State of Zacatecas: near 
San Juan Capistrano, 19 August, 1897, Dr. J. N. Rose, no. 2436 (hb. 
Gr., and hb. U. S. Nat. Mus.). In general aspect Pectis propetes re- 
sembles P. prostrata, but it is readily distinguished from it by the elon- 
gated peduncles and the conspicuous ray-flowers. 
Pectis (§ Pectothrix) puberula, n. sp. A slender dichotomously 
branched annual, 1 to 2 dm. in height: stems puberulent, often purplish : 
leaves linear or linear-lanceolate, 1 to 3 em. long, 4 mm. or less broad, 
acute, bearing 1 to 4 pairs of setae near the base, otherwise entire, 
glabrous on = surfaces, slightly hirtellous on the margins and on the 
; DS a 
