Dissection 2, 3, & 4: Watermelon berry, Highbush cranberry, and Blueberry

Watermelon berries (Streptopus amplexifolius) https://www.thinglink.com/card/1209572586724261895

Grows in very wet, dense undergrowth, usually with ferns and skunk cabbage.

Alternate, oblong-lanceolate leaves

Leaves are sessile

Parallel venation

Fruits (berries) hang from axils/peduncles

Axile placentation

3 carpels


Highbush cranberry  (Viburnum trilobum) https://www.thinglink.com/card/1209580316885254151

Widely spread but grows abundantly in understory of mixed spruce/birch forests.

Opposite leaves, three-lobed

Serrated margins

Palmate venation

Corymb inflorescence

Fruit: drupe, flat seed

Apical placentation

Alaska Blueberry (Vaccinium ovalifolium) https://www.thinglink.com/card/1209580855794597895

Prefers acidic soil, abundant in previously logged or burned areas.

Leaves: ovate, alternating, simple

Axile placentation

5 carpels

True berry



One comment

  1. Great, for Watermelon berries (Streptopus amplexifolius) you nicely illustrated the single locule with intruded parietal placentation, commonly we find axile placentation with multiple locules (as in Tulip), but Streptopus is different.

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