Needle Spikerush: Eleocharis acicularis (Synonyms: Eleocharis acicularis var. acicularis, Eleocharis acicularis var. gracilescens, Eleocharis acicularis var. occidentalis, Eleocharis acicularis var. porcata, Eleocharis acicularis var. submersa, Scirpus acicularis)
Delicate Spikerush: Eleocharis bella (Suksdorf collections at Bingen. Not collected since the early 1900s?)
Engelmann's Spikerush: Eleocharis engelmannii (Suksdorf collections at Bingen. Not collected since the early 1900s?)
Confusing Spikerush, Creeping Spikerush, Pale Spikerush: Eleocharis macrostachya (Synonyms: Eleocharis perlonga, Eleocharis xyridiformis)
Blunt Spikerush, Ovate Spikerush, Ovoid Spikerush: Eleocharis obtusa (Synonyms: Eleocharis obtusa var. ellipsoidales, Eleocharis obtusa var. gigantea, Eleocharis obtusa var. jejuna, Eleocharis obtusa var. obtusa, Eleocharis obtusa var. peasei, Eleocharis ovata, Scirpus ovatus, Scirpus ovatus var. heuseri, Scirpus obtusus)
Ovate Spikerush, Ovoid Spikerush: Eleocharis ovata (Synonyms: Eleocharis obtusa var. ovata, Scirpus ovatus, Scirpus ovatus var. heuseri)
Common Spikerush, Creeping Spikerush: Eleocharis palustris (Synonyms: Eleocharis macrostachya, Eleocharis mamilata, Eleocharis palustris var. major, Eleocharis palustris var. palustris, Eleocharis smallii, Eleocharis uniglumis, Scirpus palustris)
Few-flowered Spikerush, Few-flowered Spike-rush: Eleocharis quinqueflora (Synonyms: Eleocharis fernaldii, Eleocharis pauciflora, Eleocharis pauciflora var. fernaldii, Eleocharis pauciflora var. pauciflora, Eleocharis pauciflora var. suksdorfiana, Eleocharis quinqueflora ssp. fernaldii, Scirpus pauciflorus) ?
Beaked Spikerush, Suksdorf's Spikerush: Eleocharis suksdorfiana (Collected at South Prairie.)