Johnson Grass
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Johnson Grass
ative Photo: Prashant Awale
Common name: Johnson Grass, Aleppo grass, Aleppo milletgrass • Bengali: jowar • Hindi: baru, chinna, bajara, jangli-jowar • Kannada: huchhu jola, impi jola, kaadu galagu hullu, kahijola • Telugu: gaddi janu
Botanical name: Sorghum halepense    Family: Poaceae (Grass family)
Synonyms: Andropogon halepensis

Johnson Grass is an erect, perennial, rhizomatous grass, to 3.5 m tall. It is a principal weed of corn, cotton, and sugarcane, and a weed of many crops throughout the world. Leaf-blades 20-90 cm long; 5-40 mm wide. Leaf-blade margins scaberulous. Inflorescence is a panicle with branches tipped by a raceme. Panicle are open lance-shaped or pyramidal, 10-55 cm long, 3-25 cm wide. Primary panicle branches are whorled at most nodes, moderately divided. Racemes are 1.2-2.5 cm long, bearing few fertile spikelets, bearing 1-5 fertile spikelets on each. Rhachis is fragile at the nodes, ciliate on margins. Rhachis internodes filiform. Rhachis internode tip transverse, cupuliform. Spikelets occur in pairs. Fertile spikelets are stalkless, 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; ciliate. Johnson Grass is native to eastern Europe, but now naturalized throughout the world.

Identification credit: Prashant Awale
Photographed in Mumbai.
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