Flora of the Nilgiris

Family : Asteraceae
Flora of Nilgiri Biosphere (Northern Nilgiri Biosphere Reserve)

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Parthenium hysterophorus L.

Leaf arrangement

Alternate

Leaf Type

Simple

Leaf Shape

Lanceolate, Oblong

Leaf Apex

Acute

Leaf Base

Decurrent

Leaf Margin

Pinnatifid

Habit : An erect, puberulous well branched herb.

Habitat and Distribution : Very common in wastelands, an aggressive invader. Found in the plains from the coast, upto 1400m, less with increasing altitude. Native of America, now a pantropical weed.

Indigenous Information : This plant has been around since 15-20 years mostly around the cultivated lands. The dried plants are tied to make a broom. The plant is also mulched into the soil during ploughing. Some people are allergic to the plant.

Other relevent information : A known allergen of human beings and cattle, causes asthma, eczema and contact dermatitis. Dried plant used as fuel.

 

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Names:

English : Congress Grass
Irula : Keepa geda/Bhoothkeda

Hindi : Gajar ghas

Flower:

In terminal capitulums in panicles, white. Flowering peaks during November-March.

Fruit :

An achene, compressed,three-angled, puberulous along the sides. Fruiting March onwards.

All from Asteraceae
Flora of Nilgiri Biosphere (Northern Nilgiri Biosphere Reserve)