Ranunculus humilis
| Ranunculus humilis Persoon, Syn. Pl. 2: 102. 1806, nom. illegit. | BASIONYM: Ranunculus pusillus Poiret 1804. | |
Ranunculus oblongifolius
| Ranunculus oblongifolius Elliott, Sketch Bot. S. Carolina 2: 58. 1821. | | TYPE: GEORGIA: Chatham Co.: 12 mi. from Savannah on the Augusta Road, St. John's Berkley, s.d., Macbride s.n. (holotype: CHARL). |
Ranunculus pusillus var. oblongifolius
| Ranunculus pusillus Poiret, var. oblongifolius (Elliott) Torrey & A. Gray, Fl. N. Amer. 1: 17. 1838. | BASIONYM: Ranunculus oblongifolius Elliott 1821. | |
Ranunculus pusillus var. typicus
| Ranunculus pusillus Poiret, var. typicus L. D. Benson, Amer. Midl. Naturalist 40: 197. 1948, nom. inadmiss. | BASIONYM: Ranunculus pusillus Poiret 1804. | |
Ranunculus biolettii
| Ranunculus biolettii Greene, Pittonia 2: 225. 1892. | | TYPE: CALIFORNIA: Sonoma Co.: Hook's Peak, 1 May 1889, Bioletti s.n. (holotype: NDG). |
Ranunculus pusillus var. angustifolius
| Ranunculus pusillus Poiret, var. angustifolius (Engelmann) L. D. Benson, Bull. Torrey Bot. Club 69: 310. 1942. | BASIONYM: Ranunculus trachyspermus Engelmann, var. angustifolius Engelmann 1845. | |
Ranunculus pusillus var. lindheimeri
| Ranunculus pusillus Poiret, var. lindheimeri (Engelmann) A. Gray, Proc. Amer. Acad. Arts 21: 367. 1886. | BASIONYM: Ranunculus trachyspermus Engelmann, var. lindheimeri Engelmann 1845. | |
Ranunculus pusillus var. muticus
| Ranunculus pusillus Poiret, var. muticus Torrey & A. Gray, Fl. N. Amer. 1: 17. 1838. | | TYPE: NEW YORK: Without data, Torrey s.n. (lectotype: NY). Lectotypified by L. D. Benson, Bull. Torrey Bot. Club 69: 310. 1942. |
Ranunculus tener
| Ranunculus tener C. Mohr, Contr. U.S. Natl. Herb. 6: 513. 1901. | BASIONYM: Ranunculus trachyspermus Engelmann 1845, non Elliott 1821. | |
Ranunculus trachyspermus
| Ranunculus trachyspermus Engelmann, in Engelmann & A. Gray, Boston J. Nat. Hist. 5: 211. 1845, non Elliott 1821. | | TYPE: TEXAS: Harris Co.: Near Houston, |
Ranunculus trachyspermus var. angustifolius
| Ranunculus trachyspermus Engelmann, var. angustifolius Engelmann, in Engelmann & A. Gray, Boston J. Nat. Hist. 5: 211. 1845. | | |
Ranunculus trachyspermus var. lindheimeri
| Ranunculus trachyspermus Engelmann, var. lindheimeri Engelmann, in Engelmann & A. Gray, Boston J. Nat. Hist. 5: 211. 1845. | | TYPE: TEXAS: Harris Co.: Near Houston, 1843, Lindheimer s.n. (holotype: MO; isotype: GH). |