Disseminule: Fruit (referred to as achene or seed unit)
Description
Achene appendages: Ridges and grooves
Achene Colour: YellowAchene Length: 2 - 4mm
Achene Sculpture: StriateAchene Shape: Lanceolate (Lance shaped)
The production of empty seeds is common in non-domesticated species of the Asteraceae. Empty seeds may have a normal seed coat but an absent or under-developed embryo, or limited storage tissue.
The fruit (3-4 mm) is an indehiscent achene, with a single locule containing a single seed. The achenes are narrowly obovate and compressed, with 5-7 ribs on each face. The tip is formed into a narrow beak, topped by a pappus of 2 equal rows of soft white, simple hairs. The seeds are white, yellowish, grey or brown in colour.
Source: See Web Links KEW Royal Botanic Gardens
