682 COMPOSITAE 
Leaves with entire Margins; 5 2 i @ «6 | « 96) + \sy whemlOsearctamrims 
Leaves toothed at margins. 
Leaves narrow lance-shaped SBErine at base. 
eaves on lear-stalks . . H. grosse-serratus 
Leaves without leaf-stalks ‘or ‘on very short ones - « «- AHA. gtiganteus 
Leaves egg-shaped . .. PHD rs, IF. Tne S 
Leaves rounded or very abrupt at base. 
Leaves at nearly right angles with the stem . . . H. divaricatus 
Leaves at an acute angle with stem. 
On slender leaf-stalks . - HH. decapetalus 
Without leaf-stalks or with very short ones. . H. strumosus 
1. H. angustifolius, L. (Fig. 6, pl. 190.) Swamp SunFLower. 
Stem slender, 2 to 7 ft. high, rough above, hairy below. Leaves linear, 
without teeth and, without leaf-stalk, 2 to 7 in. long, 4 in. wide, upper 
alternate, lower opposite. Heads few or solitary, 2 to 3 in, broad; rays 
abruptly terminated, 3-toothed, disk purple; scales sharp pointed. Swamps, 
southern part of our area. Aug.-Oct. 
2. H. giganteus, L. (Fig. 1, pl. 190.) Giant SunrLower. Stem 
rough, hairy, 3 to 12 ft. high, branching above, bearing many heads on 
long flower stems. Leaves lance-shaped, 2 to 6 in. long, sharp pointed at 
apex, tapering to the base which is attached directly or nearly so, to stem, 
Heads showy, 14 to 24 in. broad. Wet meadows, swamps. Aug.-Oct. 
3. H. divaricatus, L. (Fig. 4, pl. 190.) RoucH SuNFLoWER. Stem 
simple or branched above, 1 to 7 ft. high. Leaves usually all opposite and 
extending at right angles with the stem, abruptly terminated, at base at- 
tached to stem by a very short leaf-stalk. Heads about 23 in. broad. Dry 
thickets, common. July-Sept. 
4. H. decapetalus, L. (Fig. 3, pl. 190.) THIN-LEAVED SUNFLOWER. 
Stem slender, scarcely hairy, 1 to 5 ft. high, branching. Leaves smooth 
or somewhat rough, egg-shaped, slender pointed at apex, base rounded to 
a marginal leaf-stalk, “Rays about 10. Moist woods, borders of streams. 
Aug.-Sept. 
5. H. strumosus, L. (Fig. 5, pl. 190.) Pate-LEaAvED Woop Sun- 
FLOWER. Stem very smooth, 3 to 7 ft. high, branched above, the branches 
usually downy. Leaves lance-shaped, slender pointed, rounded at base, at- 
tached to stem without leaf-stalk or by a very short one. Heads 23 to 4 
in. broad. Dry woods. July-Sept. 
6. H. tuberosus, L. (Fig. 2, pl. 190.) JerRusatem ARTICHOKE. 
Plant hairy, 5 to 12 ft. high, the root-stocks bearing edible tubers. Leaves 
egg-shaped to lance-shaped, pointed at each end, the base narrowed to a 
moderately long leaf-stalk. Rays 12 to 20, Roadsides, borders of old gar- 
dens. Moist places. Sept.-Oct. 
7. H. grosse-serratus, Martens. SAw-Tooruep SunrLower, Stem 6 
to 10 ft. high, somewhat hairy on the branches. Leaves long, narrow 
lance-shaped, 4 to 8 in. long, 4 to 1 in. wide, teeth sharp, though the upper- 
most leaves may be without teeth, downy or with long soft hairs beneath. 
Heads } to 3 in. broad. Involuere hemispheric. Disk yellowish; rays 10 
to 20, deep yellow. Long Island, Penna., and southward. Aug.-Oct. 
32. VERBESINA, L. (Actinomeris, Nutt.) 
Herbs with alternate or opposite leaves and clustered or solitary heads 
of tubular and radiate flowers. Involucre seales few, lance-shaped, de- 
flexed. Rays not fruitful, disk flowers fertile. 
