LYTHRACEJ.. (LOOSESTRIFE FAMILY.) 133 
* 
August. Stem 19-13? high. Leaves rarely 1’ long. Flowers 1'- 1j! in 
diameter. 
6. R. serrulata, Nutt. Low; stem simple, 4-angled, smooth; leaves 
smooth above ; calyx glandular-bristly ; cyme leafy, 1 - 6-flowered. — Open flat 
pine barrens, near the coast, Florida, Georgia, and westward. July and August. . 
— Stem 2'-6/ high. Leaves and flowers smaller than in the preceding. 
+ + Flowers yellow. 
’ 7. R. lutea, Walt. Stem at length much branched, 4-angled, bristly ; 
leaves smoothish, bristly serrulate, the lower ones obovate and obtuse, the upper 
lanceolate and acute; cymes numerous; calyx short and smooth; flowers 
small. — Pine-barren swamps, Florida to North Carolina, and westward. July 
and August.— Stem 1° high. Petals more persistent than those of the other 
species. ' 
Orver 52. LYTHRACEZE,. (LoosEsrRIFE Famtty.) 
Chiefly herbs, with opposite or whorled and entire leaves, without stip- 
ules. Flowers mostly axillary. — Calyx tubular, persistent, 4 — 7-toothed, 
free from the 2 — 4-celled ovary. Petals as many as the teeth of the calyx 
and inserted into its throat, deciduous, sometimes wanting. Stamens as 
many as the petals, or 2—4 times as many, inserted below the petals. 
Anthers short, introrse. Style solitary. Capsule enclosed in the calyx, 
1—4-celled, few or many-seeded. Placente central. Seeds anatropous, 
without albumen. — Sinuses of the calyx often appendaged. Stigma capi- 
tate, or rarely 2-lobed. 
Synopsis. 
* Calyx regular. 
l HYPOBRYCHIA. Calyx hemispherical. Petals none. Stigma 2-lobed. Capsule 2-celled 
2. AMMANNIA. Calyx campanulate. Stigma capitate. Capsule 4-celled. 
8. LYTHRUM. Calyx cylindrical, striate. Capsule oblong, 2-celled. 
4. NESJEA. Calyx short, even. Capsule globose, 3- 5-celled. Stamens 10. 
* * Calyx gibbous at the base. 
5. CUPHEA. Calyx tubular, 12-ribbed. Stamens mostly 12. Capsule early ruptared, - 
1. HYPOBRYCHIA, M. A. Curtis. 
Calyx hemispherical or campanulate, 4-lobed. Petals none. Stamens 2-4. 
Style very short : stigma 2-lobed. Capsule globose, 2-celled. — A submerged 
aquatic herb, with long filiform stems, opposite crowded pellucid linear leaves, 
and minute sessile axillary flowers. 
-L H. Nuttallii, Torr. & Gray. — Posi beak ll waite, beat 
E ec sos 19-29 
