42 CLUSIACE. (BALSAM-TREE FAMILY.) 
lanceolate, mostly longer than the small petals, and equalling the (green) ovoid 
capsule; stamens 6-12. (H. parviflorum, Muhl. H. quinquenervium, Walt.) 
—Ditches and low grounds, common. June-August. — Stem 1° high. 
Branches of the cyme filiform. Flowers very small, remote. 
17. H. Canadense, L. Stems simple or branched, 4-angled ; leaves lin- | 
ear or linear-lanceolate, the upper ones acute, sessile; sepals lanceolate, acute, 
longer than the petals, shorter than the oblong (brown) capsule. — Wet sandy 
places, Florida and northward. June-Oct.— Stem 4'-192' high, with the 
branches erect. Flowers small, copper-yellow. Stamens 5-10. 
* "* Flowers scattered on the slender branches : leaves minute. 
18. H. Sarothra, Michx. Stem much branched; branches erect, filiform; 
leaves minute, subulate, bract-like; flowers small, sessile; sepals scarcely half 
as long as the lanceolate purple capsule. — Sandy old fields. Florida and north- 
ward. June-August. — Stems 6' - 12/ high. Stamens 5 - 10. 
19. H. Drummondii, Torr. & Gray. Stem much branched; leaves lin- 
ear or the lower ones oblong, acute, appressed; sepals barely shorter than the 
ovate capsule ; flowers pedicelled. — Dry barren soil, Florida, South Carolina, 
and westward. July and August.— Stems and branches stouter than the last. - 
Stamens 10 - 20. 
3. ELODEA, Adans. 
Sepals 5. Petals 5, equal-sided, imbricated in the bud. Stamens mostly 9, 
and united in sets of three, with a scale-like gland between each set. Styles 3, 
distinct. Capsule 3-celled, 3-valved, many-seeded. Smooth perennial herbs. 
Flowers rose-color, in contracted lateral and terminal cymes. 
LE Virginica, Natt. Leaves ‘oblong or oval, cordate, clasping, con- 
spicuously dotted beneath ; stamens united below the middle. — Swamps, Florida 
and northward. July and August.— Stems terete, 19 - 2° high. 
2. E. petiolata, Pursh. Leaves oblong, narrowed at the base, short-peti- 
oled, obscurely dotted beneath; stamens united above the middle.— With the 
preceding. July and August. — Stem 2° high. 
Orver 19. CLUSIACEJE. (Batsam-Tree Famity.) _ 
"Trees or shrubs, with resinous yellow juice, opposite coriaceous entire - 
dotless leaves articulated with the stem, and regular hypogynous flowers. - 
Sepals 3-6. Petals 4-9. Stamens mostly numerous, distinct or variously 
united. Ovary 1 - many-celled, few — many-ovuled. Style single, often 
none. Fruit capsular, baccate, or drupaceous. Seeds without o 
Embryo nime Cotyledons thick, distinct or'united. 
