600 
PHARMACEUTICAL BOTANY 
to pure white or from red to purple to blue (Veronica). Stamens 
five, fertile, equal in length in a few Verbascum (mullein) species 
or unequal in other Verbascum species to stamens four with a long 
sterile staminode (Pentstemon, beard-tongue) to four didyna- 
peor 
be 
fic. 457.—Culver’s Root or Tall 
Speedwell (Veronica virginica). Note the minal 
rhizome and roots and portions of the 
stem bearing whorls of lanceolate, 
serrate leaves and terminal spikes of 
usually white, often pink or blue flowers. 
(Reproduced from U.S. Dept. Agric. Misc. 
Publ. 77.) 
OrriciaL Druc 
Digitalis 
Digitalis Pulverata 
Leptandra 
(Culver’s Root) 
UnorriciAL Druc 
Verbasci Flores 
Euphrasia 
(Eye-bright) 
Verbasci Folia 
Balmony 
Part Usep 
Leaf 
Standardized 
powd. leaf 
Rhizome and 
roots 
Corollas with 
stamens 
Plant 
Leaves 
Leaves 
8 
mous stamens with a short petal- 
oid staminode (Scrophularia, 
figwort) to four didynamous 
stamens with a minute often 
nectariferous staminode (Linaria, 
toadflax), to frequently four 
didynamous stamens only, the 
two lateral or two anterior 
stamens stronger and_ longer 
(Antirrhinum, snapdragon), to two 
_ perfect stamens and two minute 
staminodes (Calceolaria), to two 
stamens alone developed (Veron- 
ica, speedwell). Pistil bicarpel- 
late, ovary two-celled with 
central placentation; style ter- 
with bilobed stigma; 
ovules numerous, small. Fruit 
a two-celled and usually many- 
seeded capsule. Seeds richly 
albuminous, anatropous or 
amphitropous. 
BorTANIcAL OrIGIN HABITAT 
Digitalis purpurea Europe 
United States 
and Canada 
Veronica virginica 
Verbascum 
phlomoides 
Verbascum 
thapsiforme 
Europe and Asia 
Euphrasia officinalis Europe 
Verbascum Thapsus Europe and Asia 
Chelone glabra North America 
