LYTIIRACKiE. (loosestrife FAMILY.) 133 



August. Stem l°-li° high. Leaves rarely 1' long. Flowers l'-l|' in 

 diameter. 



6. R. serrulata, Natt. Low ; stem simple, 4-angleil, smooth ; leaves 

 imootli above ; calyx glandular-bristly ; cyme leafy, 1 -6-flo\vcreil. — Open flat 

 pine barrens, near the coast, Florida, Georgia, and westward. July and August. 

 — Stem 2' -C liigli Leaves and flowers smaller than in the pi-cceding. 



■f- -t- Flowers yellow. 



7. R. lutea, Walt. Stem at length much branched, 4-anglcd, bristly ; 

 leaves smoot!ii>li, bristly serrulate, the lower ones obovate and obtuse, the upper 

 lanceolate and acute ; cymes numerous ; calyx short and smooth ; flowers 

 small. — Pine-biUTcn swamps, Florida to North Carolina, and westward. July 

 and August. — Stem 1° high. Petals more persistent than those of the other 

 species. 



Ordeu 52. LYTIIRACE^. (Loosr.sTniFE Family.) 



Chiefly herbs, witli opposite or whorleJ and entire loaves, williout stip- 

 ules. Flowers mostly axillary. — Calyx tubular, persistent, t - 7-toothed, 

 free from the 2 -4H'elk'.d ovary. Petals as many as the tcetli of the calyx 

 and inserted into its throat, deciduous, sometimes Avanting. Stamens as 

 many as tlie petals, or 2-4 times as many, inserted below tlic petals. 

 Anthers short, introrse. Style solitary. Capsule enclosed in the calyx, 

 1-4-celled, few or many-seeded. Placenta; central. Seeds anatropous, 

 without albumen. — Sinuses of the calyx often appcndaged. Stigma capi- 

 tate, or rarely 2-Iobed. 



Synopsis. 



» Calyx regular. 

 L IIYPOBUYCIITA. Calyx hemispherical. Petals none. Stigma 2-lol)ca. Capsule S-celleA 



2. AMMANNIA. Calyx cauipanulate. Stigma capitate. Capsule 4-celleJ. 



3. LYTIIIIL'M. Cal.\x cjliodrical, striate. Capsule oblong, 2K;ellpa. 



4. NF.S.y.A. Calyx short, even. Capsule globose, 3- 5-celled. Suiuiens 10. 



* * Calyx gibbous at the bafc. 

 6. CUPIIEA. Calyx tubular, 12-ribbed. Stamens mostly 12. Capsule early ruptured. 



1. HYPOBRYCHIA, M. A. Curtis. 



Calyx hemispherical or campanulate, 4-lobcd. Petals none. Stamens 2-4. 

 Style very sliort : stigma 2-Iobcd. Capsule globose, 2-cellcd. — A submerged 

 aquatic herb, witli long filiform stems, opposite crowded pellucid linear leaves, 

 and minute sessile axillary flowers. 



1. H. Nuttallii, Torr. & Gray. — Ponds and still water, "West Florida to 

 North Carolina, and westward. June -Aug. — Stems I*' -2° long. Leaves 1' 

 long, acute. Flowers not larger than a pin's head. 

 V 12 



