SYNOPSIS OF THE GENERA. 
Crass 21. Monogctia. 
(Stamens and Pistils in separate flowers on the same 
plant.) 
Orpger I. Monanpria.—1 Stamen. 
1. Eupnor'sta, [Page 1132.] Involucre of one piece, five 
cleft, surrounded with five alternating glands. Head of 
numerous barren flowers, (10 to 20 or more each a single, 
stamens without calyx or corolla), surrounding the fertile 
one (a single pistil, without calyx or corolla, elevated upon 
a pedical). Style three cleft. Fruit hanging out of the 
involucrum, three celled, each cell bursting elastically at 
the back, containing one, rarely two, suspended seeds. 
2. Carui'rricHE, [Page 1144.] Flowers generally monecious. 
Perianth of two petaloid pieces, barren flower a single 
stamen, with a filiform filament. Anthers one celled, two 
valved, fertile flower with its ovary four angled, four 
celled, two styles. Capsule four celled, four seeded, inde- 
hiscent. Seed peltate. Radicle very long, curved, supe- 
rior. Cotyledons very short—Small aquatic plants. 
3. ZANNICHE'LLIA, [Page 1146.] Flowers solitary, barren 
flowers a single naked stamen, inserted at the outside of 
the base of the perianth of the ferlile flower, which is 
campanulate, surrounding two to six ovaries. Stigma 
peltate. Fruit dry, single seeded, compressed, gibbous, 
crenated externally.—Slender spreading water plants. 
4, Zostr'rs, [Page 1147.] Stamens aud pistils inserted in two 
rows upon one side of a spadix. Spatha foliaceous. 
Stamens sessile, anthers alternating with the ovaries. 
Ovary ovate. Style bifid. Fruit a one seeded nut— 
Slender spreading water plants, with grass-like leaves. 
(For Chara, see CLass CRYPTOUAMIA). 
OrveErR II. Dr1anpria.—2 Stamens. 
(See Callitriche in ORDER 1. Carex in ORDER 3.) 
OrvER III. Trianpria.—3 Stamens. 
* Flowers in spherical heads. 
5. Sparca'nium, [Page 1148] Flowers in naked globose 
