Specimen List - The William & Lynda Steere Herbarium

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Taxon	Collector	Date	Country	State/Province	Locality	Type Status
Potamogeton nodosus Poir.	C. D. Riggs s.n.	29 Jun 1955	United States of America	Oklahoma	Johnston Co. fish hatchery, 1…	—
Potamogeton pectinatus L.	C. D. Riggs s.n.	29 Jun 1955	United States of America	Oklahoma	Johnston Co. fish hatchery, 1…	—
Callitriche heterophylla Pursh	C. D. Riggs s.n.	01 May 1955	United States of America	Oklahoma	Adair Co. Tiner Creek	—
Ranunculus aquatilis var. diffusus With.	C. D. Riggs s.n.	22 Jun 1955	United States of America	Oklahoma	Johnston Co. near Reagan	—