Scientific name: Guizotia abyssinica Cass.

Bangla/local name: ‘Guzi Teel’








Taxonomic Position according to Cronquist (1981)

Kingdom        : Plantae

Division          : Magnoliophyta

Class               : Magnoliopsida

Subclass          : Asteridae

Order              : Asterales

Family             : Asterceae

Genus              : Guizotia

Species            : G. abyssinica

Botanical Description of Ramtilla

Habit: Annual herb, pubescent


Root: Tap roots.

Stem: Erect or prostate

Leaf: Simple sessile

Flower: Inflorescence head or capitulate


Involucre bract: The head or capitulum are surrounded by a whorl of bracts called the involecre thus producing a flower cluster resembling a single flower.

Fruit: Cypsela

niger seeds


Chromosome: 2n=30

Economic Importance: Edible oil, used as cosmetic also.

Table 1. Niger Variety Developed by Oil Seed Research Center, BARI, Joydebpur, Bangladesh

Sl. No.Name of VarietyDeveloped byYear of ReleaseGrowing SeasonYield
1SovaOil Seed Research Center1988Rabi1.05-1.15 t/ha

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