It is a Lamb’s quarters (common goosefoot).

Scientific name: Chenopodium album.

An annual herb 20–150 cm tall with an erect, often grooved, green to reddish stem that branches from the upper nodes. Leaves are alternate and variable: lower leaves are rhomboid-ovate to triangular with 3–5 shallow lobes and coarse teeth; upper leaves become more lanceolate with fewer lobes. Young foliage and the undersides of leaves are coated with a distinctive whitish, mealy (farinose) bloom from bladder-like hairs; the upper surface is dull to slightly glaucous green. Petioles are evident and can be up to half the blade length. Venation is pinnate, midrib prominent. The plant bears dense, terminal and axillary panicles of tiny, greenish, apetalous flowers; each flower has a 5-lobed perianth that encloses a single-seeded utricle. Mature seeds are small (about 1–2 mm), black and shiny, lens-shaped. Root is a slender taproot with fibrous laterals. Typically found in disturbed soils, garden beds, field margins, and cracks in pavement or rock..

Lamb’s quarters is a close relative of quinoa; its young leaves are edible and highly nutritious, but like spinach they contain oxalates. The mealy white coating is formed by tiny bladder hairs that can store salts and help the plant tolerate drought and poor soils..

The leaves have the classic ‘goosefoot’ outline—rhomboid to triangular with shallow lobes and coarse teeth—and are arranged alternately. The visible whitish, powdery coating on new growth and leaf undersides is characteristic of Chenopodium species, especially C. album. The plant is growing in a disturbed, rocky crevice, a common habitat. The absence of halberd-shaped leaf bases argues against Atriplex, and the lack of nightshade-like entire leaves and glossy texture rules out Solanum nigrum. Overall morphology strongly matches lamb’s quarters.