Sedge Master

Sedge Key

Glossary

S. baldwinii

S. ciliata

S. distans

S. georgiana

S. "hirtella"

S. lacustris

S. reticularis

S. triglomerata

S. verticillata

 

 

 

 

 

 

 Scleria

1. Achene ribbed (like a pumpkin), the base concave, pitted, or glandular between the basal corners...2

1. Achene smooth, warty, or reticulate but not ribbed, the base free of pits or glands...3

2. Achene base concave but not glandular...S. baldwinii

2. Achene base with 2 glandular pits on each face...S. georgiana

3. Achene surface smooth...6 (note 3 choices for question 6)

3. Achene surface pitted, reticulate, or warty...4

4. Achene warty; hypogynium absent...S. verticillata (hypogynium = a lobed or unlobed base on the achene of many Scleria species) 

4. Achene reticulate; hypogynium present...5

5. Hypogynium not lobed or scarcely lobed, the hypogynium warty...S. ciliata

5. Hypogynium strongly lobed, the hypogynium smooth..S. reticularis

6A. Leaves 3-6 mm wide; culms 40-100 cm tall; spikelets 3-9 mm long,  in terminal and lateral ascending fascicles...S. triglomerata (achene a little 3-angled)

6B. Leaves 1.5-4 mm wide; culms 15-65 cm tall; spikelets 4-5 mm long, in nodding clusters...S. distans (often mis-named S. hirtella)

 

6C. Leaves > 9 mm wide...Scleria lacustris