382 PROCEEDINGS OF THE AMERICAN ACADEMY. 
6.5 mm. longis (tubulo 2 mm.) infra glanduloso-puberulis — 
glanduloso-pilosis flavis denique obscurantibus; paleis latis 9 m 
longis-appressé pubescentibus dorso. et apice ciliatis; acheniis es 
truncatis glabris calvis 4.5 mm. longis 2.8 mm. latis. 
Specimens examined: TamMauuipas: weed in waste places, growing 
in clusters, vicinity of Tampico, alt. 15 m., 10 Mar.—19 Apr. 1910, 
Palmer 250 (rypE in Gray Herb.). 
x » Petioles auriculate. 
6. S. eurylepis Blake, n. sp., herbacea foliis inferioribus et basi 
invisis; caule striato sparse puberulo et pilis longis mollibus nonnullis; 
foliis remotis maxima ex parte alternis ovatis acutis basi subtruncatis 
subintegris vel infra dentatis utrimque pubescentibus pilis brevibus 
patentibus basi tuberculatis venas secundum subhispidis, petiolo vix 
marginato puberulo-glanduloso ad basin latas in auriculas integras 
ampliato; capitulis plerumque glomeratis in pedunculis longis nudis 
terminalibus, eradiatis 1.2-1.4 cm. altitudine 1-1.5 cm. diametro; 
involucro discum subaequante 3-4-seriato squamis sensim gradatis 
interioribus oblongis 7-9.5 mm. longis 2-2.5 mm. latis extimis ovalibus 
5 mm. longis 2.5 mm. latis acutis striatis puberulo-glandulosis et 
subpilosis supra purpureo-brunneis; corollis disci flavis denique 
purpurascentibus 8 mm. longis (tubulo 2.2 mm.) infra et in dentibus 
puberulis; paleis 8. 5 mm. longis apice pilosis a latere subdentatis; 
acheniis g 2 calvis glabris 5.5 mm. longis 3. 4mm. 
latis. . 
Specimens examined: San Luts Porost: district Cuidad del Maiz 
near Gallinas, Feb. 1888, C. & E. Seler 684 (vype in Gray Herb.). 
nes pubescent and biaristate. 
x Tips of pales oadt inner Tatts purple; leaves not tomentose beneath; Mexican. 
S. LaGascaEFormis DC. Annual, erect or rarely somewhat 
sptending, usually much branched; stems and branches striate, glandu- 
lar-pubescent and pilose particularly near the nodes; leaves opposite 
below, alternate in the inflorescence, broadly deltoid-ovate, unlobed or 
rarely hastately 3-lobed, the margin crenate 0 or vane sade acute, the 
base truncate or cordate with broad sinus, b ent 
pilose along the veins, or when young almost tomentose, eeave or 
lose, the hairs tuberculate-based, intermixed with longer looser ones, 
the blades 3~12 cm. long, 2—13.5 cm. wide, on purplish naked glandular- 
puberulent pilose-fringed petioles 1.5-5 cm. long; heads numerous, 
cymose-panicled, the branches somewhat pilose and ee 
lar; heads cylindric becoming hemispheric, 10-12 mm. high, 5-8 
