284 THE FLORA 
COHORT VI. 
FLORIDE4, OR THE FLOWERING ENDOGENS. 
Orper CXXXV. ALISMACEA. Alismads. 
Herbs growing in water, with the leaves parallel-veined, and with the 
jlowers regular and not on a spadix; the perianth consisting of 
sepals and petals, 8 of each, the former always green ; 
ovaries free, 8 or more, separating into as many 1-seeded achenia. 
Analysis of the Genera. 
§ Both the calyx and corolla greenish. Lvs. 
rush-like (Avrow-grasses)..... db 
§ Corolla colored, white. Leaves mostly 
with a lamina....a 
a Fis. . Sta. 6. Carpels whorled. 
Water Plantain. Avisma. 1 
= Fis. %. Stamens 9-24. Carpels ina 
head, chinodore. Ecurnoporvs. 
a Fis. 9. Sta. many. Carpels ina 
head. <Arrow-head. Saaittaria, 2 
b Lvs. radical. Anthers ovate. Carpels 
1 seeded. Trigloch. TRIGLOCHIN. 
b Leaves cauline. Antherslinear. Car- 
pels 1-2-seeded. SouEUCHZERIA. 
1. ALISMA. Water Plantain. 
Flowers perfect. Stamens 6. Ova- 
ries and styles numerous, collected into 
a whorl, becoming in fruit many dis- 
tinct, flattened achenia.—2 Stemless 
herbs, the leaves all radical. Flowers 
in a panicle. 
A. planta’go. A common, smooth, handsome 
inhabitant of ponds and ditches. Leaves 
oval or ovate, abruptly acuminate, 7-9- 
Fig, 648. Sagittaria sagittifolia (com- 
mon form), leaf and flowers. 4. One 
of the pistils enlarged. 5. The pistil of 
Alisma cut open, showing the seed and 
eurved embryo, 
