y Stem-leaves opposite (or bracts alternate in Veronica) 
veronic: 
Stamens 2 —~-——- — —— 
2 with white limb ) 
}0 Corolla yellow tubular, 2-lipped; capsule 
: vet Pumfo §. Gratiole 
/O Corolla bluish or white, saucer=shaped, 
, { 4-lobed, slightly irregular; capsule 
{ \eecordetie> flattened laterally 
9, Veronica 
g@ Stamens 4, a fifth sterile filament wererkie—y» often 
present, either obvious or represented by 
P) 
a scale or gland on the upper surface of 
\the corolla 
/o Sterile filament elongated, resembling 
,,/the other filaments but usually Platter 35 hairy 
‘iat the apex 
|Z, Leaves expanded at the base, sheathing 
_ /the stem; flowers in a simple raceme, 
Jo few /o. Chionophila 
| 2, Leaves not expanded or sheathing at the 
| /oase; flowers in open panicles or more 
|, (or less contracted into cylindrical 
\spikes, numerous uu. Penstemon 
tN 
/D Sterile filament not prominent, represented 
jad by a scale or gland on the upper surface 
‘ \of the corolla, or wholly wanting 
/¢, Corolla with 4 unequal erect lobes, the 
IP aenaeane lobe deflexed, more or less 
appressed against the tube la, Scrophularia 
i7, Corolla 2-lipped, the upper lip 2-lobed, 
16 the lower 3-lobed, spreading 
/4 Middle lobe of lower lip pouch-like, 
,a/ laterally compressed, enclosing the 
‘’ \ stamens /3 Collinsia 
_— 
/4 Middle lobe of lower lip neither 
/@ pouch-like nor compressed 
ji, Calyx-tube distinctly S-angled; 
_¢ capsule ovoid, not compressed, 
‘-" “the seeds numerous /Yiiimulus 
); Calyx-tube not markedly 5-angled; 
_/capsule obliquely ovate, strongly 
Compressed; seeds 2=4 73, felampyrum 
