Friday, October 15, 2010

Lab 4 - Basal Asterids: Ericaceae

ERICACEAE - Heath Family

  One member of the Ericaeae is Gaultheria shallon (Salal) - the shrub that covers much of the understory within Pacific Spirit Park.

An inflorescence of Arbutus flowers. The urn-shaped "urceolate" flower is character shared by many members of Ericaceae.

Each individual has 5 fused sepals...

and 5 corolla lobes. The fruit type is actually a capsule that is enclosed in fleshy calyx? (I was sure it's the corolla that turns fleshy and not calyx...)

Transverse section through one of the flowers. The stamens are not attached to the corolla (not epipetalous).

A fruit (berry-like drupe) from an Arbutus branch.

Fruits of Gaultheria procumbens (Wintergreen).

The cross section through the above fruit.

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