EPILOBIACEAE 941 
long, or as broad as long, green: el aad globose-obovoid or obovoid, 2.5-3 mm. 
long.—Pineland ponds, M Fla.—Sum 
I. repens (Sw.) DC. Leaf-blades ovate, elliptie, or ird 7 : em. long: 
hy pu obpyramidal: sepa B A e-lane nM) petals as s the sepals 
nting: T ule obpyramid [Z. natans (Ell) Sm iE e e in 
nos streams and m orice: Const Plain. and rarely adj. provinces, Fla. 
to Tenn. and N. C.— (Mea. )—Spr. —fal 
2. LUDWIGIANTHA Small. Perennial fleshy depressed herbs. 
Leaves numerous: blades narrow, entire. Flowers axillary. Sepals 4, nar- 
row. Petals yellow, conspicuous. Filaments 
elongate. Ovary long. Style filiform. Cap- 
sule elavate.—One or 2 species, of the east- 
ern United States. 
1. L. — (Walt.) Small. Stem creep- 
ing: leaf-blades oblanceolate, to almost 
linear, 7—25 mn Es ng, obtuse or acute: 
peduncles gendo ongate, i than de; 
sepals linear- b pu -10 
p uc acuminate: co 2-2.5 em. wide, 
p spreading, rund slightly ela wed: 
= stamens much e. than the p cap- 
sule curved, 7-10 ps ng; l S 
the per sistent sepa de Or dn —Swamps, 
o. spri ney y places, a pond-margins, Coastal Plain, Fla. to Va.—Spr.- 
ted species, L. brevipes Long, from N. J. might a. on the 
Son cd no seaboard. 
3. LUDWIGIA L. Annual or perennial erect or matted herbs. Leaf- 
blades entire or rarely shallowly toothed. Flowers axillary or terminal. Sepals 
generally persistent, green or reddish. Petals usually 4, yellow. Ovary usually 
4-celled. Capsule cylindric or prismatic to subglobose.—About 25 species, most 
abundant in North America. 
Corolla conspicuous; flowers peduncled: capsule opening by a terminal pore. 
I. ALTERNIFOLIAE. 
Corolla inconspicuous, obsolete, or wanting: valves of the cap- 
sule separating from the disk-like top. II. MICROCARPEAE, 
I. ALTERNIFOLIA 
Foliage, sepals, and capsule glabrous, B, or — 
appressed-pubescent. 
Stem-leaves with Short-petioled blades: petals about as 
long as the sepals: pedicel shorter than the capsule. 
iuri. with closely sessile blades: petals about 
twice as long as the sepals: pedicel longer than the 
D 
e 
. alternifolia. 
CDI. 
Sepals thrice as long as the hypanthium in anthesis: 
Style longer than the sepals. 2. L. virgata. 
Sepals twice as long as ie hypanthium in anthesis: 
style shorter than the = epa als. 3. L. maritima. 
Foliage, sepals, and capsule hir 4. L. hirtella. 
II. MICROCARPEAE 
Petals wanting or minute, shorter than the sepals. 
Capsule 1 -3 mm. long; stem-leaves of a spatulate type. 
Leaf-blades entire 5. L. microcarpa. 
MELT blades 00d dim apex 
eaf-blades e P spatulate: sepals mueh shorter 
"han the hypanthi um. 6. L. Simpsonii. 
