CARDUACEAE 1465 
Eid e than 5 mm. long: disk-corollas 3-4 mm. long; lobes ovate: achene 
5-6 mm. long, much longer than the longer pappus- -scale-——Sandy waste-places, 
Coastal Plain, N.C. Nat. of Chile.—Sum.-fal 
102. BOEBERA Willd. Annual or perennial, glandular-dotted, strong- 
scented herbs. Leaves alternate or opposite: blades commonly parted or 
dissected. Heads inconspicuous, usually 
eorymbose.  Involuere turbinate or cam- 
. Re- 
ceptacle flat or nearly so. ay-flowers yel- 
e corollas with minute ligules. 
Disk yellow. Achene 3-5-angled. Pa ae 
of 10 or more partly united narrow scales 
About 3 species, North American. 
1. B. papposa d Rydb. Plant an- 
nual, pubescent, dm. tall: leaves oppo- 
site; blades 1-3 e ed P l- or 
2-par rted: involuc 6- 8 high; bracts 
scarious-mar Ra "ligules of the ray-flowers j 
pu ia achene 3.5-4 mm. long, pubescent.—Waste- P and road- 
sides, Tenn. to La., Ariz., Minn. and Ohio.—(Mez.)—Adv. E.—Sum.-fall. 
Thymophylla tenuiloba (DC.) Small, a native of Tex. and adj. Mex., is adven- 
tive at Miami, Fla. It has finely cut leaf-blades and yellow heads. 
103. PECTIS L. Slender or wiry eee -dotted herbs, the stems 
usually pubescent in lines. Leaves opposite: blades narrow, skies ciliate 
near the base. Heads clustered or ole Tava uere narrow, few ral-flow 
ered: bracts gland-bearing. Ray-flowers few: corollas with yellow es Styles 
pubescent. Stigmas of the disk-flowers very short. —About 75 species, American. 
Heads sessile or nearly so, mostly in clusters. 
Leaves with scattered glands; blades oblanceolate to linear- 
spatulate. 1. P. prostrata 
Leaves with 2 rows of glands beneath; blades narrowly 
linear. 2. P. linearifolia. 
Heads distinctly peduncled, solitary in the branch-forks and 
at the ends of the branches. 3. P. leptocephala. 
1. P. prostrata Cav. Stem usually branched at the base, the branches 
procumbent or prostrate, 0.5-2 dm . long: leaf-blades oblanceolate to linear- 
ith 5-9 
ave and ke ele d: 2s o disk-flowers 
yi 15, with corollas 2-2.5 mm. long: achene 
3-4 mm pd Or d smaller: pappus- 
scales of narrowly lanceolate, 
omn ei bs 1- 3 prod of the disk 5, 
unequal.—W aste- 22 and cult. grounds, 
various provinces, Fla. to Ariz.—(W. 
Meg., C. A., S. 4 
linea Ste 
fall, erect or r diffesely pe UM RE puberuent 
in lines: leaf-blades linear or nearly so, ove 
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