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Rutishauser, R. (1999). «Polymerous leaf whorls in vascular plants: Developmental morphology and fuzziness of organ identities». International Journal of Plant Sciences. 160 (6): 81–103. JSTOR10.1086/314221. PMID10572024. doi:10.1086/314221
Elgorriaga, A.; Escapa, I.H.; Rothwell, G.W.; Tomescu, A.M.F.; Cúneo, N.R. (2018). «Origin of Equisetum: Evolution of horsetails (Equisetales) within the major euphyllophyte clade Sphenopsida». American Journal of Botany. 105 (8): 1286–1303. PMID30025163. doi:10.1002/ajb2.1125
Rutishauser, R. (1999). «Polymerous leaf whorls in vascular plants: Developmental morphology and fuzziness of organ identities». International Journal of Plant Sciences. 160 (6): 81–103. JSTOR10.1086/314221. PMID10572024. doi:10.1086/314221
Rutishauser, R. (1999). «Polymerous leaf whorls in vascular plants: Developmental morphology and fuzziness of organ identities». International Journal of Plant Sciences. 160 (6): 81–103. JSTOR10.1086/314221. PMID10572024. doi:10.1086/314221
Elgorriaga, A.; Escapa, I.H.; Rothwell, G.W.; Tomescu, A.M.F.; Cúneo, N.R. (2018). «Origin of Equisetum: Evolution of horsetails (Equisetales) within the major euphyllophyte clade Sphenopsida». American Journal of Botany. 105 (8): 1286–1303. PMID30025163. doi:10.1002/ajb2.1125