1 | Plants perennial; leaves 1-7 cm long, apex acute or acuminate; anthers c. 1.3 mm long |
1' | Plants annual; leaves 0,3-2,5 cm long, apex obtuse; anthers 0.3-0.6 mm long |
2 | Bracts conspicuous, accrescent, reddish-brown and indurated in fruit, enveloping and exceeding the fruiting perianth |
2' | Bracts inconspicuous, not accrescent, scarcely exceeding the fruiting perianth |