IGG LOASACE-TJ. (LOASA FAMILY.) 



15. Ij. Simpsoni, Chainn. Glalirous; stoni 2'-9' Iii<;li, tercto, 8imi)le; 

 loaves i' Iniig, sjiatiilatc-oljuvate, alteriiaU-, or the lowest ojijioslte ; flowers 

 apetalous; eai)sule top-shapcil, obscurely angular, longer than the triangular 

 calyx lohes. — Low grouud, Mauatee, South Florida. 



* # # Stems creeping : leaves opposite. 

 -4— Petals none. 



10. L. palustris, Kll. Smooth; stems iliffu.se; leaves obovate, tajjcriug 

 into a long jjetiole ; rai)sule oblong or obconical, obscurely 4-si(le(J, longer 

 than the calyx lobes. — Ditches and muddy places, commou. June - Sept. - - 

 Stems 6' -12' long. 



17. L. spathulata, Torr. & Gray. Pubescent and somewhat hoary; 

 leaves spalulatt-oliovate; capsule ovoid; otherwise like the preceding. — 

 Margins of pine barren jiomls, Middle Florida. July -August. Very rare. 



-t- -t- Petals 4. 



18. L. natans, Ell. Smooth; stems diffuse; leaves obovate, acutish, 

 tapering into a long petiole ; flowers short-pedicelled ; petals roundish, as 

 long as the lobes of the calyx ; capsule ol)tuscly 4-angled, narrowed at the 

 base. — Marshes and margins of streams, in the lower districts. July -Sept. 

 — Resembles No. IG but is every way larger. 



19. L. arcuata, Walt Smooth; leaves lanceolate, narrowed at the 

 base, acute ; flowers on peduncles usually longer than the leaves, 2-bracted 

 at the base; calyx lobes linear-lanceolate, shorter than the obovate petals; 

 capsule davate, curved. — Muddy margins of ponds, etc., Florida to North 

 Carolina. July. — Stems 4'- 8' long. 



6. CIRCJEA, Tourn. 



Calyx tube slightly produced beyond the ovary, the limb 2 cleft, deciduous. 

 Petals 2, ol)Cordate. Stamens 2. Style filiform. Capsule obovate, 1 - 2- 

 celleil, 1-2-sceded, bristly with hooked hairs. — Perennial herbs, with oppo- 

 site petioled leaves, and small white or rose-colored flowers in loo.se terminal 

 racemes. 



1. C. Lutotiana, L. Minutely pubescent; leaves ovate, acuminate, 

 slightly toothed, usually longer than the petioles ; bracts none ; capsule his- 

 pid. — Damp shades along the mountains. July. — Stem l°-2° high, tumid 

 at the joints. Fruit reflexed. F'lowers reddish white. 



2. C. alpina, L. Smooth ; stem low (3' - 8') ; leaves membranaceous, 

 cordate, coarsely tootjied, as long as the petioles; pedicels minutely bracted ; 

 capsule liairy. — With the preceding. 



Order 01. LOASACE^E. (Loasa Family.) 



Herbs, commonly armed with bristly barbed, often stinging, hairs. 

 Leaves alternate, exstipulate. Flowers solitary or clustered. — Calyx 

 tube adherent to the 1 -celled ovary, the limb 5-parted and persistent. 

 Petals 5 or 10, inserted on the throat of the calyx. Stamens mostly 



