228 
COMPOSITE. (COMPOSITE FAMILY.) 
15. II. doronicoldes, Lam. (Large-leaved Sunflower.) 
Stem tall and stout, branching, rough-hairy above ; leaves ovate or ob¬ 
long-lanceolate, pointed, serrate, strongly triple-nerved , rough above, 
downy underneath , the lower often heart-shaped and on margined pe¬ 
tioles; scales of the involucre linear-lanceolate, pointed, scarcely ex¬ 
ceeding the disk; rays 12-15. — River-bottoms, Ohio and southwest- 
ward. A coarse species, 5° -8° high, with ample thickish leaves 
(the lower often 1° long), and showy heads. 
leaves chiefly alternate , triple-nerved: introduced. 
16. H. tuberosus, L. (Jerusalem Artichoke.) Tuber- 
bearing; stem stout and tall, branched, rough ; leaves petioled, rough, 
ovate, pointed, serrate, the lower heart-shaped ; scales of the involu¬ 
cre linear-lanceolate; rays 12-20. — Naturalized in fence-rows and 
around gardens. 
H. annuus, L., the Common Sunflower, which grows spontane¬ 
ously around dwellings, belongs to the annual section of the genus, 
with large flat heads and a brownish disk. 
as. ACTINonERis, Nutt. Actinomeris. 
Heads many-flowered, the rays few or several, neutral rarely 
none. Involucre foliaceous, nearly equal, in 1 to 3 rows. Recep¬ 
tacle convex or conical, chaffy, the chaff embracing the outer mar¬ 
gin of the flat (laterally compressed) and winged achenia. Pap¬ 
pus of 2 smooth persistent awns. — Tall and branching perennial 
herbs, w ith serrate feather-veined leaves, tapering to the base and 
mostly decurrent on the stem. Heads corymbed : flowers chiefly 
yellow. (Name from itr.V, a ray, and psplt, a part; alluding to 
the fewness or irregularity of the rays.) 
1. A. Sqiiarrosa, Nutt. (Tall Actinomeris.) Stem some- 
• Ulr ^ an< * v ’‘ n ged above; leaves alternate or the lower opposite, 
oblong or ovate-lanceolate, pointed at both ends; heads in an open 
corymbed panicle; scales of the involucre in 2 rows, the outer linear- 
spatulate, reflexed; rays 4-10 , irregular; achenia broadly winged; 
receptacle globular. — Rich soil, W. New York (Sarttcell) to Michi¬ 
gan and southward. Sept. - Plant 4“ - 0= high. 
a. A. helianthoidcs, Nutt. (Hoart Actinomeris.) Stem 
Dairy widely Kinged by the ovate-lanceolate sessile alternate leaves, 
whtch are rough above and whitened with close hairs beneath; heads 
tew; scales of the involucre not spreading ; rays 8- 15, regular, nar¬ 
row; schema oval, slightly winged, tipped with 2 fragile bristly 
awns, » otter than the chaff; receptacle conical. — Prairies an 
copses, Ohio and southward. July —Stem l=>-3° high, often sim- 
pie, leafy. 
