104 
NASTUR'TIUM. 
Flowers white; leaves with rather distant, roundish~ 
f leaflets ; fruit 2-# inch long. J 
L Officinalle. Water Cress. 
Flowers yellow. 
gels not twice as long as it is wide; upper leaves 
toothed, rarely deeply cut. J 
amphib'ium. 
~Fruit at least twice as long as wide. 
— much longer than the sepals; fruit very ) 
slender. sylvat'icum. ) 
~Petals not (or scarcely) longer than the sepals; fruit) 
rather short and thick. palus'tre. ) 
NEP’ETA. 
lower lip of corolla almost entire. ! 
Glecho’ma. Ground-Ivy 7 
Leaves longer than wide; flowers pale, middle lobe of~ 
corolla concave and coarsely toothed. | 
Cata'ria. Catmint/ 
GiNAN'THE. 
Upper leaves with few, long, narrow segments. 
oc and swollen leaf-stalks very hollow; upper leaves~ 
shorter than their stalks. ! 
| fistulo’sa Water Dropwort/ 
\ Stem and leaf-stalks nearly solid; leaves longer than~ 
their stalks. | 
rey roundish ; flowers blue-purple, middle lobe of~ 
r 
pimpinelloi'des./ 
Most of the leaves with numerous segments. 
-Leaf-segments wide, wedge-shaped, often 4 inch long ;~ 
| flowers in umbels at the end of the stem. i 
L croca'ta. Water Hemlock. 
Leaf-segments small, usually narrow; umbels me 
at the side of the stem, opposite to a leaf. 
Phellan'drium. Horsebane? 
ONO'NIS. 
Flower-stalks much shorter than the calyx; pods with | 
( only 1-4 seeds. arven'sis. /test-harrow.) 
Flower-stalks as long as the calyx, jointed at the top >) 
pods with 10 or more seeds; (Devon.) J 
reclina'ta. 
