A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
| Ulex europaeus |
| Ulmus glabra |
| Ulmus laevis |
| Ulmus minor |
| Umbilicus gaditanus |
| Umbilicus rupestris |
| Urginea hesperia |
| Urginea maritima |
| Urospermum dalechampii |
| Urospermum picroides |
| Urtica dioica |
| Usnea sp. |