241 
convex tuberculate naked receptacle, compressed wedge-oblong achenes 
with a strong salient nerve to each margin and (usually) on the middle 
of one face (these densely long-hirsute, the faces glabrate), and pappus 
of numerous somewhat unequal barbellate fuscous bristles in a single 
series and equaling the disk-corolla. 
1. B. scaposa Gray. Flowering almost from the base by 1-headed scapes 15 to 25 
em, high, and later by similar peduncles terminating sparsely leafy branching 
stems: leaves roundish or subcordate, repand-dentate, some 3 to 5-lobed: involucre 
pubescent.—Near El Paso in Mexico and New Mexico, and very probably within the 
Texan border, 
108. HAPLOESTHES Gray. 
Somewhat fleshy herbaceous or suffrutescent fastigiately branched 
glabrous leafy plants, with opposite very narrow leaves, many-flowered 
‘adiate heads with yellow flowers all fertile, 4 or 5 nearly equal orbicu- 
lar or broadly oval strongly overlapping involucral bracts, flat naked 
receptacle, linear terete striate-ribbed glabrous achenes, and pappus a 
single series of rather rigid and scabrous whitish bristles about equal- 
ing the disk-corolla. 
1. H. Greggii Gray. Leafy up to the loose cymes of a few slender-pedunculate 
naked heads: leaves very narrowly linear or filiform, entire, the lower connate at 
base: heads 4 to 6mm. high, with yellowish-tinged bracts: ligules 2 to 4 mm. long 
ornone. (Aplopappus Texanus Coulter).—Saline soil, in western Texas. 
109. SENECIO Tourn. (GROUNDSBL.) 
Herbs (in U.S.), with alternate leaves, solitary or corymbed many- 
flowered heads of chiefly yellow flowers, pistillate rays or none, cylin- 
drical to bell-shaped simple involucre (or with a few bractlets at base) 
of erect-connivent bracts, flat naked receptacle, and pappus of numer- 
ous very soft and slender capillary bristles—Heads conspicuously ra- 
diate in all ours. 
* Root annual or biennial : herbage glabrous or soon becoming so. 
1, S. ampullaceus Hook. Lightly floccose when young, becoming smooth: stem 
stout, 3 to 6 dm. high, leafy to near the summit: leaves all undivided, repand-den- 
tate or entire, ovate or oblong, 2.5 to 15 cm. long; lowest obovate, with tapering 
wing-petioled base; upper mostly clasping with broad base: heads rather numerous 
ia loose naked cymes: rays 7 to 9: achenes canescent.—Sandy prairies of Texas. 
2. S. multilobatus Torr. & Gray. Early glabrate and smooth, 3 to 6 dm. high, 
naked and often branching above, bearing numerous corymbed heads: radical and 
lower stem-leaves lyrate, with dentate divisions; upper pinnately parted, their 
mostly numerous narrowly cuneate divisions incised or 2 or 3-lobed at apex. (S. 
Tampicanus Gray Pl. Wright.)—Western borders of Texas. 
3. S. lobatus Pers. Lightly floccose when young, early glabrous and very smooth, 
3 to9 dm. high, bearing a naked corymb of small heads: leaves somewhat fleshy, 
lyrate or pinnate, the divisions or leaflets from roundish to cuneate or oblong, cre- 
nate or cut-lobed, irregular and variable: rays 6 to 12, conspicuous.—Common in 
wet grounds, in the low country from the Gulf States through Texas to Mexico, 
Commonly known as “ butter-weed, ” 
