Fruits

From top to bottom, left to right:

1. Hedge maple – Acer campestre (Aceraceae (formerly) family)

– Samara fruit example: a dry, indehiscent fruit

– Seen in Columbus, OH

2. Dandelion – Taraxacum officinale (Asteraceae family)

– Achene fruit example: a dry, one-seeded, indehiscent fruit

– Seen in Sunbury, OH

3. Bur oak – Quercus macrocarpa (Fagaceae family)

               – Nut fruit example: one-seeded dry fruit with thick pericarp

– Seen in Sunbury, OH

4. American sweetgum – Liquidambar styraciflua (Altingiaceae family)

– Capsule fruit example: 2 or more carpels, split in many ways

– Seen in Columbus, OH

 

Flowers

From left to right:

1. white clover – Trifolium repens (Fabaceae family)

– each flowerhead has ~20 flowers (capitulum inflorescence), where individual flowers have 5 sepals, 5 petals (1+2+2), androecium with 9 fused stamens and 1 free, and a 2-fused hypogenous gynoecium

– Seen in Sunbury, OH

2. marsh St. John’s wort – Triadenum virginicum (Hypericaceae family)

– Perfect flowers with 5 sepals, 5 pink petals, 5 stamens, and an apocarpous gynoecium

– Seen in Columbus, OH

3. sweet alyssum – Lobularia maritima (Brassicaceae family)

– perfect flowers with 4 sepals, 4 white petals, 6 stamens (4 short, 2 long), and 2-fused carpel hypogenous gynoecium

– Seen in Sunbury, OH