Amaranthus lepturus Blake

Amaranthus lepturus Blake, Jour. Bot. 53: 104. 1915
Plants erect, branched, about 1 meter high, the stems slender, whitish, glabrous; petioles 1.4-2.8 cm. long; leaf-blades rhombic-oval, 2.1-2.7 cm. long, 1.3-1.6 cm. broad, obtuse or retuse and cuspidulate at the apex, broadly cuneate at the base, glabrous; flowers monoecious, spicate, the spikes erect, terminal and axillary, naked above, interrupted and leafy below, 10-41 cm. long, 0.6-1.7 cm. thick; bracts lance-subulate, spreading or recurved, 3.2 mm. long or shorter, longer than the sepals; staminate sepals ovate-lanceolate, acute, scarious, 2 mm. long; stamens 5; sepals of the pistillate flowers 5, oblong-spatulate, 2.5 mm. long, slightly spreading at the apex, retuse or obtuse or acutish, mucronulate, glabrous, or with a few short hairs below, green, scarious-margined ; style-branches 3 or 2 ; utricle much shorter than the calyx, circumscissile near the middle; seed subglobose, 1.2 mm. long, brownish-black, lustrous.
Type locality: On hills, Magdalena Bay, Lower California.
Distribution: Known only from the type locality.

Amaranthus lepturus là loài thực vật có hoa thuộc họ Dền. Loài này được S.F.Blake mô tả khoa học đầu tiên năm 1915.