Thursday, September 29, 2022

Erigeron acomanus

 


Family:

ASTERACEAE


Scientific Name with Author:

Erigeron acomanus Spellenberg and Knight


Synonyms:

NONE


Common Name: 

Acoma fleabane 


Description:

Taprooted perennial, mat-forming, 10-70 cm in diameter; leaves mostly basal, spreading or ascending, 8-30 in rosettes at ends of caudex branches, oblanceolate to narrowly obovate or spatulate, 8-23 mm long, 2-7 mm wide, round or obtuse at the tip, moderately puberulent on both surfaces; flowering stems erect, 4.5-15 cm tall, bearing 4-10 reduced leaves; heads solitary, pendulous in bud, erect in flower and fruit; involucre 5 mm high; phyllaries 25-38, lanceolatate, 2.5-4 mm long, purplish on the margins; ray flowers 16-30, white, 4.5-9 mm long; disk corollas 2.5-3 mm long, yellowish; achenes somewhat flattened, lightly hirsute; pappus of fine barbellate bristles. Flowers in July.


Why this planet called as Endangered Species:

A very narrow endemic, but current land uses do not significantly threaten its habitats. May occasionally be impacted by mining operations.




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