Data on spore morphology of Cerosora microphylla (Anogramma microphylla) (Pteridaceae)

  • A. V. Vaganov South-Siberian Botanical Garden
  • I. I. Gureyeva Tomsk State University
  • A. A. Kuznetsov Tomsk State University
  • A. I. Shmakov South-Siberian Botanical Garden
  • R. S. Romanets Tomsk State University
Keywords: Anogramma, Cerosora, Pteridoideae, Pteridaceae, morphology of the spores, scanning electronic microscopy (SEM)


We used the method of scanning electron microscopy (SEM) to study the representatives of the genus Anogramma from South-West Asia and the Himalayas. To confirm the presence of Cerosora microphylla (Hook.) R.M. Tryon in China (hence, the absence of Anogramma microphylla (Hook.) Diels), we revealed the features of external morphology of spores that are not inherent in representatives of the genus Anogramma: absence of an equatorial ridge, roundish-triangular shape of the spores in the proximal-polar and distal-polar positions; absence of roller-like bulges extending upward in the form of ridges along the contour of the distal side of the spore; roller-like folds extending upward in the form of ridges both on the proximal and distal sides of the spore. In addition, one feature revealed for C. microphylla – spherical tubercles between the proximal and distal roller-like folds located along the spore equator – indicates its high species-specificity. 


Christenhusz, M. J. M., Zhang, X.-C., & Schneider, H. (2011). A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa, 19, 7–54.
Gastony, G. J., & Baroutsis, J. G. (1975). Chromosome numbers in the genus Anogramma. American Fern Journal, 65(3), 71–75.
Giacosa, J. R., Morbelli, M., & Giudice, G. (2004). Spore wall ultrastructure in Anogramma species (Pteridaceae) from Argentina. Grana, 43, 231–237.
Liu, H.-M., Wang, L., Zhang, X.-Ch., & Zeng, H. (2008). Advances in the studies of lycophytes and monilophytes with reference to systematic arrangement of families distributed in China. Journal of Systematics and Evolution, 46(6), 808–829.
Schneider, H., He, L., Hennequin, S., & Zhang, X.-C. (2013). Towards a natural classification of Pteridaceae: Inferring the relationships of enigmatic pteridoid fern species occurring in the Sino-Himalaya and Afro-Madagascar. Phytotaxa, 77(4), 49–60.
Schuettpelz, E., & Pryer, K. M. (2008). Fern phylogeny. Biology and evolution of ferns and lycophytes, 395–416.
Schuettpelz, E., Schneider, H., Huiet, L., Windham, M. D., & Pryer, K. M. (2007). A molecular phylogeny of the fern family Pteridaceae: Аssessing overall relationships and the affinities of previously unsampled genera. Molecular Phylogenetics and Evolution, 44, 1172–1185.
Smith, A. R., Kathleen, M. P., Schuettpelz, E., Korall, P., Schneider, H., & Wolf, P. G. (2006). A classification for extant ferns. Taxon, 55, 705–731.
Tryon, R. (1986). Some new names and combination in Pteridaceae. American Fern Journal, 76(4), 1–185.
Tryon, R. M. (1990). Pteridaceae. In: Kramer, K. U., & Green, P. S. (vol. eds.). Pteridophytes and Gymnosperms. In: Kubitzki K. (ed.) The families and genera of vascular plants. Springer, Berlin, 230–256.
Tryon, R. M. (1986). Some new names and combinations in Pteridaceae. American Fern Journal, 76, 184–186.
Tryon, A. F., & Lugardon, B. (1991). The spores of pteridophytes: Surface, wall structure, and diversity based on electron microscopy studies. Springer, Berlin.
Zhang, G., Zhang, X., & Chen, Z. (2005). Phylogeny of cryptogrammoid ferns and related taxa based on rbcL sequences. Nordic Journal of Botany, 23, 485–493.
Zhang, L., Zhou, X.-M., Thi Lu, N., & Zhang, L.-B. (2017). Phylogeny of the fern subfamily Pteridoideae (Pteridaceae; Pteridophyta), with the description of a new genus: Gastoniella. Molecular Phylogenetics and Evolution, 109, 59–72.
Zhang, G. M., Liao, W. B., Ding, M. Y., Lin, Y. X., Wu, Z. H., Zhang, X. C., Dong, S. Y., Prado, J., Gilbert, M. G., Yatskievych, G., Ranker, T. A., Hooper, E. A., Alverson, E. R., Metzgar, J. S., Funston, A. M., Masuyama, S., & Kato, M. (2013). Pteridaceae. In: Wu, Z. Y., Raven, P. H., & Hong, D. Y. (eds.). Flora of China, 2–3 (Pteridophytes). Science Press, Beijing; Missouri Botanical Garden Press, St. Louis, 169–256.