Spring Weeds 3
:
Page 1
(
Aliens in red
)
Fabaceae (Pea)
Medicago lupulina
Black Medick
Lamiaceae
Glechoma hederacea
Creeping Charlie
(Ground Ivy): opposite leaves, square stems
Grossulariaceae
Ribes missouriense
Missouri Gooseberry
: Leaves alternate, hairless. Thorns usually red. Berries green and smooth, but turn black when ripe. Ridged stem?
Asteraceae
Taraxacum officinale
Dandelion
: sepals become pappus (calyx),
fused ray petals
form tube at base, fused stamen filaments enclose style,
milky sap
, inferior ovary
Asteraceae
Senecio glabellus
Butterweed
Cruciferae
Barbarea vulgaris
Yellow Rocket
Cruciferae
Capsella bursa-pastoris
Shepherd's Purse
Cruciferae
Thlaspi arvense
Field Penny-cress
Cruciferae
Lepidium campestre
Pepper Cress
Fabaceae (Pea)
Medicago lupulina
Black Medick
Fabaceae
Trifolium pratense
Red Clover
Fabaceae
Trifolium hybridum
Alsike Clover