Weed Families

Question 1

Grass-like; triangular stems; 3-ranked leaves

Answer 1

Cyperaceae = sedge

Question 2

Opposite leaves; swollen leaf nodes; 5 notched petals

Answer 2

Caryophyllaceae = pink

Question 3

Flowers usually small, inconspicuous and green; plants often salt/ drought tolerant; stems have some sort of colored stripe

Answer 3

Chenopodiaceae = goosefoot

Question 4

Often red-pigmented; flowers subtended by persistent bracts, also inconspicuous

Answer 4

Amaranthaceae = pigweed

Question 5

Ocrea (clear membrane around nodes); seeds triangular or flattened; stems often red-pigmented

Answer 5

Polygonaceae = buckwheat

Question 6

Leaves usually have palmate venation; flowers 5-petaled; fruit often resembles a button; large leaves

Answer 6

Malvaceae = mallow

Question 7

Cross-shaped flower with 4 sepals, 4 petals. And 4+2 stamens (4 tall, 2 short), fruit a silicle or silique, often have basal rosette of leaves

Answer 7

Brassicaceae = mustard

Question 8

Large, diverse family; usually 5 sepals, 5 petals, numerous stamens; leaves often toothed and compound

Answer 8

Rosaceae = rose

Question 9

Trifoliate or otherwise compound leaves, often with large stipules; roots are nodulated; flowers conspicuous and often yellow or pink

Answer 9

Fabaceae = legume

Question 10

Stems round or flat, jointed, and usually hollow between nodes; leaves narrow and with parallel venation

Answer 10

Poaceae (Gramineae) = grass