Carex

A. Molina, C. Acedo & F. Llamas, Taxonomy and new taxa of the Carex divulsa aggregate in Eurasia (section Phaestoglochin, Cyperaceae) in Bot. J. Linn. Soc. 156. 2008R. D. Meikle, Flora of Cyprus 2. 1985
but modified
1Female spikes pendulous, green, cylindrical, up to 18 cm long; plant very robust
1'Female spikes either absent or not pendulous, much less than 18 cm long
2Spikes ovoid or rounded with male flowers at the top and female flower below (androgynous); stigmas 2
2'Spikes either all male or all female (occasionally the uppermost female partly male at the top); stigmas 3
3Plants with a long, creeping rhizome and dense, brown inflorescence
3'Plants tufted
4Inflorescence dense, lower spikes approximate, often branched, soon becoming brown; culms more than 3 mm wide at base, very sharply trigonous; ligule longer than 3 mm
4'Inflorescence interrupted, lower spikes more or less distant, sometimes approximate, green except when old; culms 2-3 mm wide at base, obtusely trigonous; ligule up to 3 mm long
5Inflorescence with 0-2 basal spikes compound; utricles longer than 4 mm; beak 1.0-1.75 mm long, its apical teeth 0.6-1.0 mm long
5'Inflorescence with 3-4 basal spikes compound; utricles 3.0-3.5 mm long; beak 0.7-1.0 mm long, its apical teeth 0.2-0.5 mm long
6Inflorescence short, of one terminal male spike and one female below; small tufted plants; utricle clearly ribbed, inflated-trigonous, scrabridulous-pubescent
6'Inflorescence of more than 2 spikes; utricle not both clearly ribbed and scabridulous-pubescent
7Female spikes very few-flowered (flowers 1-6); utricles substipitate
7'Female spikes many-flowered; utricles not stipitate
8Utricles beakless, somewhat inflated
8'Utricles with a more or less pronounced, bifid beak
9Male spikes 3-4; utricle hispid-scabridulous, not ribbed
9'Male spikes 1-2; utricle glabrous
10Leaves narrow, inrolled; female spikes approximate; utricle nervose-ribbed
10'Leaves flat; female spikes remote
11Male spikes fulvous or purplish-brown, up to 50 mm long; female spikes 10-30(-50) mm long; culms up to 90 cm long
11'Male spikes dark purple, up to 18 mm long; female spikes 5-15 mm long; culms rarely exceeding 25 cm