SYNOPSIS OF NATURAL ORDERS. 137 
solitary pendulous ovule in each carpel. Fruit of nuts or 
drupes; seeds with a straight or curved embryo, large radicle, 
and no endosperm. (Triglochin, 1 sp.; Potamogeton (Pond- 
weed), 4 sp.; Ruppia, 1 sp.; Zannichelha, 1 sp.; Zostera 
(Sea-wrack), 2 sp.) 
Sub-class IJ. GuuMACER. 
11. Restiacem.—Grass- or rush-like plants; leai-sheaths 
split to the base. Flowers unisexual. Perianth 0 or of 6 
leaflets. Stamens 3 (sometimes 1 or 2); anthers 1-celled, 
versatile. Ovary 1-celled, with 2 or 3 stigmas, or of 2-15 
free carpels; ovule solitary and pendulous in each cell. 
Fruit a nut, or a 1- or more-celled capsule; seed with small 
embryo at the base of mealy endosperm: (Leptocarpus, 1 sp. ; 
Hypolena, 1 sp.; Gaimardia, 3 sp. ; Sporadanthus, 1 sp.) 
12. Cyppracnas.—Grass- or rush-like plants; culms solid ; 
leaf-sheaths entire. Perianth 0, or of bristles or scales. 
Stamens 1-6; anthers 2-celled, basifixed. Ovary 1-celled; 
style 1; stigmas 1-3, filiform; ovule erect. Seed with em- 
bryo in the base of floury endosperm, (P. 149.) 
13. Graminrz=.—Grasses; culms hollow, jointed; leaf- 
sheaths split to the base. Perianth 0, or of 2 minute scales. 
Stamens 3; anthers 2-celled, versatile. Ovary 1-celled ; 
stigmas 2, feathery; ovule erect. Seed with embryo at one 
side of the base of floury endosperm. (P. 150.) 
