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CCDB → Angiosperms → Compositae → Symphyotrichum → Virgulus patens var. patentissimus (Lindl.) Reveal & Keener

Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
Virgulus patens var. patentissimus (Lindl.) Reveal & Keener	Symphyotrichum patens var. patentissimum (Lindl.) G. L. Nesom	10II	20	IPCN online	Semple, J. C. & J. G. Chmielewski. 1987. Chromosome number determinations in fam. Compositae, tribe Astereae. II. Additional counts. Rhodora 89: 319–325.
Virgulus patens var. patentissimus (Lindl.) Reveal & Keener	Symphyotrichum patens var. patentissimum (Lindl.) G. L. Nesom		20	IPCN online	Semple, J. C. 1984. Cytogeographic studies on North American Asters. I. Range surveys of Virgulus adnatus, V. concolor, V. georgianus, V. grandiflorus, V. novae-angliae, V. oblongifolius, V. patens and V. walteri. Amer. J. Bot. 71: 522–531.
Virgulus patens var. patentissimus (Lindl.) Reveal & Keener	Symphyotrichum patens var. patentissimum (Lindl.) G. L. Nesom		20	IPCN online	Semple, J. C., J. G. Chmielewski & C. Xiang. 1992. Chromosome number determinations in fam. Compositae, tribe Astereae. IV. Additional reports and comments on the cytogeography and status of some species of Aster and Solidago. Rhodora 94: 48–62.
Virgulus patens var. patentissimus (Lindl.) Reveal & Keener	Symphyotrichum patens var. patentissimum (Lindl.) G. L. Nesom		20	IPCN online	Semple, J. C., J. Zhang & C. Xiang. 1993. Chromosome number determinations in fam. Compositae, tribe Astereae. V. Eastern North American taxa. Rhodora 95: 234–253.