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journalAt: Canadian Journal of Botany, 63, 10 By: Basinger J. F., Christophel D. C.
journalAt: Plant Systematics and Evolution, 189, 1–2 By: Herendeen P. S., Crepet W. L., Nixon K. C.
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journalAt: American Journal of Botany, 88, 3 By: Schönenberger J., Friis E. M.
journalAt: Journal of the Botanical Research Institute of Texas, 12, 2 By: Poinar G. O., Chambers K. L.