Tuesday, 19 March 2024

Erigeron acris 飛蓬、狼尾巴棵

Common name: Blue Fleabane
Scientific name: Erigeron acris 飛蓬、狼尾巴棵
Genus: Erigeron 飛蓬屬
Family: Asteraceae or Compositae 菊科, aster , daisy, composite or sunflower family

Remarks*: 

Origin: native

Date: 9th Aug

046 A slender, erect, branched annual or biennial, can reach up to 60cm. 1-several flower heads per inflorescence.

049 Stem roughly hairy, reddish.

047 Stem leaves numerous, lanceolate, entire and hairy.

049_1 Stem 4-squared, roughly hairy and reddish

057 Underside of the leaf.

056 Flower heads.

053

053_1 Flower bud.

052_1 Lateral view of flower head showing the involucral bracts. Note the red tip of each involucral bracts

050 Flower head 12-18mm across.

062

062_1 Ligules of ray florets purplish mauve. Note there are more than 1 row of ray florets (see there are clearly 2 row of ray florets on the top of the flower heads) (vs 1 row of ray florets in Aster 紫菀屬.) and the ligules are slightly notched. Disc florets with 5 yellow petals.

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