42 CI.USIACK^K. (l5ALSAM-TKi:i: lAMII.V.) 



lanrcolnto, mostly lousier tliiin llic small petals, nnd equalling the (green) ov()i<l 

 capsule; stamens C-12. (H. ])arvit1oriiin, ^fu/ll. II. qiiinqueneivium, W'ttll.) 

 — Ditehes and low {riounds, eomnion. June- August. — Stem 1° liigli. 

 BraiK'lies of tlie cyme filiform. Flowers very small, remote. 



IT. H. Canadense, L. Stems simple or branclied, 4-anglcil ; leaves lin- 

 ear or linear-laneeolatc, 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'- 12' liigh, with the 

 branches erect. Flowers small, copper-yellow. Stamens li - 10. 



* * Flowers acuttcrcd on the slender hranchex : leaves mi nufe. 



18. H. Sarotlira, Michx. Stem much branched ; branches erect, filiform ; 

 leaves minute, subulate, bract-like ; flowers small, sessile ; seiials scarcely half 

 as long as the lanceolate purple capsule. — Sandy old iields. 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, ajjprcssed ; sepals barely shorter than the 

 ovate capsule; flowers pedicelled. — Dry barrcn 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 l)ud. 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. 



1. E. Virginica, Nutt. Leaves oblong or oval, cordate, clasping, con- 

 spicuously dotted beneath; stamens united below the middle. — Swamps, Florida 

 and northward. July and August. — Stems terete, l°-2° high. 



2. E. petiolata, Pursh. Leaves oblong, narrowed at the bivse, short-peti- 

 oled, obscurely dotted beneath; stamens united above the middle. — With the 

 preceding. July and August. — Stem 2° liigh. 



Order 10. CLUSIACEiE. (Balsam-Tree Family.) 



Trees or shrubs, with resinous yellow juice, opposite coriaceous enti 

 dotless leaves articulated witli 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, oflon 

 none. Fruit capsidar, baccate, or drupaceous. Seeds without albumen. 

 Embryo straight. Cotyledons thick, distinct or united. 



1. CLUSIA, L. 



ire 



Calvx 2-bracted, of 6 imbricated, colored sepals. Petals 4-9. Stamens nu- 

 merous, the filaments united at the base into a thick and fleshy tube. Ovary 



