Leucaena leucocephala
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Key to the varieties of Leucaena leucocephala, from Hughes (1998):
| 1. Habit upright, arborescent, to 20 m; leaves ≥19 cm long, ≥12 cm wide, pinnular rachis ≥8 cm long, |
| leaflets (11-)16-21 mm long; capitula >18 mm in diameter at anthesis, with ≥120 flowers per captiulum; |
| pods 12-19 cm long, 18-21 mm wide | L. leucocephala subsp. glabrata |
| 1. Habit shrubby, branchy, generally ≤10 m; leaves ≤20 cm long, ≤12 cm wide, pinnular rachis ≤8 cm |
| long, leaflets 9-13 mm long; capitula 12-17 mm in diameter at anthesis, with ≤125 flowers per capitulum; |
| pods 9-13 cm long, 13-18 mm wide |
| 2. Young shoots, leaves, and unripe pods with dense whitish velutinous pubescence, ripe pods sparsely |
| pubescent | L. leucocephala subsp. leucocephala |
| 2. Shoots, leaves, and pods glabrous | L. leucocephala subsp. ixtahuacana |