204 COMPOSITAE. { Verbesina. 
14. SIEGESBECKIA, L. 
Heads heterogamous, radiate. Invol. bracts in about 2 rows, the outer 
linear-spathulate, spreading, glandular-hispid, the inner like the scales 
of the risa receptacle, half enclosing the achenes, glandular-hispid on 
the back. Ray-florets in a single row, female, fertile, shortly ligulate or 
irregularly 2- or 3-lobed. Disk- florets lenadohes dite, tubular, 5-toothed, 
fertile, or the inner ones sterile. Style-branches of disk- flo rets short, 
somewhat flattened, obtuse. Pappus none. — Herbs with opposite leaves. 
ning small, in loose leafy panicle 
species, of which the eqn igy is widely distributed over the warmer regions of 
the ond. the other belonging to S. Am 
71. S. orientalis, L. — DC. Pro i V, 495. — A pubescent, branching, 
rather stiff annual, 1—2 ft. high. Leaves from broadly ovate-triangular 
to lanceolate, 2—4’ long, on petioles I variable length, usually dilated 
d o” 
very short, of the disk about 10. Achenes turgid and usually curved. — 
Benth. Fl. Hongk. p. 182. 
In the neighborhood of Honolulu; a late arrival, 
15. A, 
Heads heterogamous, radiate. Invol. bikie in about r Ray- 
florets in one row, female, ligulate. Disk-florets eieaneaties: “fertile, 
with short tube and elongate 5-cleft limb. Paleae lanceolate, those of 
the disk folding round the achenes. Achenes of the disk flat, winged. 
Chi pposit 
Heads irregularly corymbose, or the larger ones solitary at the ends a 
the branches; corollas yellow, rarely white. 
A large genus, diffused over the warmer parts of the American Continent. 
BPO hg Benth. & Hook. in Gen. Pl. II, 380. — An erect 
Sens acunt annual, 1—2 ft. high. Upper leaves alternate, broadly ovate- 
triangular to lanceolate, 2—3/ long, acute, sharply serrate, strigoso-pube- 
scent on both faces, gray underneath. Petioles about 1/ long, winged and 
y auriculate at the base. Heads hemispherical, 8—9” broad. Invol. 
bracts ¢acsomag canescent, linear-lanceolate, the outer ones as long 48° 
the disk or longer. Receptacle convex, Tubes of corollas hairy. Ligules 
twice as long as their ~~ ennenii- -oblong, 3-lobed, bright yellow. — 
’ Disk-achenes pubescent, with a median rib on each face, broadly winged, 
deeply emarginate at the top. Bristles of pappus caducous. Ray-achenes 
glabrous, not Winged, smaller and apparently sterile. — Bot. Calif. I, 350. 
— Ximenesi at sea Cayan., DC. Prod. V, 627, 
Maui! on the isthmus an i dade. — A native of Mexico, Arizona and Texas. 
