Abstract
In this study, pollen morphology of 11 taxa of Hosta in China, three Chinese species, five introduced species, and three cultivars, was observed by scanning electron microscopy (SEM) and compared with that of related genera (Hemerocallis, Agave, and Yucca). Pollen grains of Hosta were long-ellipsoidal or ellipsoidal, 20–65 × 52.5–142.5 μm in size, bilaterally symmetrical, and monosulcate on the distal face. Reticulate and rugulate exine ornamentation was observed in different taxa, and the rugulate type can be further divided into rugulate, rugulate–baculate, and rugulate–granulate subtypes. The exine ornamentation may have evolved in the order: reticulate → rugulate → rugulate–baculate → rugulate–granulate. Furthermore, the rugulate exine ornamentation was the predominant ornamental type in Hosta except for one species with the reticulate type; this is markedly different from that of Hemerocallis, Agave and Yucca. Thus, our data support the proposal by Dahlgren and Clifford (The Monocotyledons: a comparative study. Academic Press, London, 1982) that these Hosta species constitute an independent family–Hostaceae.
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References
Bailey LH (1930) Hosta, the plantain lilies. Gentes Herbarium 2:117–142
Chen XC, Xu JM, Liang SY, Tsi ZH, Lang KY, Mao ZM, Xu LR (1980) Liliaceae. In: Flora reipublicae popularis sinicae. Science Press, Beijing, 14(1): 49–52
Chung MG, Jones SB (1989) Pollen morphology of Hosta Tratt. (Funkiaceae) and related genera. Bulletin Torrey Botanical Club 116(1):31–44
Dahlgren RMT, Clifford HT (1982) The Monocotyledons: a comparative study. Academic Press, London
Erdtman G (1952) Pollen morphology and plant taxonomy: angiosperms. Almqvist & Wiksell, Stockholm
Fujita N (1976) The genus Hosta in Japan. Acta Phytotaxonomica Geobotanica 27:66–96
Grenfell D (1998) The gardener,s guide to growing Hostas. Timber Press, Poland
Hensen KJW (1985) A study of the taxonomy of cultivated hostas. The Plantsman 7(1):1–35
Hutchinson J (1934) The families of flowering plants II. MacMillan Co., London
Hutchinson J (1973) The families of flowering plants, 3rd edn. Clarendon Press, Oxford
Hylander N (1954) The genus Hosta in swedish gardens. Acta Horti Bergiani 16:331–420
Krause K (1930) Liliaceae. In: Engler A, Prantl K: Die Natürlichen Pflanzenfamilien 2 auflage Band 15a, pp 227–386
Maekawa F (1940) The genus Hosta. Journal of the Faculty of Science, Imperial University of Tokyo, Section III Botany 5:317–425
Schmid WG (2004) How old are Hostas? How did they evolve? Evolution of Hostas, American Hosta Society 1-2
Takhtajan A (1980) Outline of the classification of flowing plant (Magnoliophyta). The Botanical Review 46(3):225–359
Tang YC, Liang SY (1983) A preliminary survey and comments on future studies of Chinese Liliaceae. Bulletin Botanical Research 3(2):56–72
Wu ZY, Lu AM, Tang YC, Chen ZR, Li DZ (2003) The families and genera of angiosperms in China––a comprehensive analysis. Science Press, Beijing
Yu SX, Kang XJ, Yu XD (2004) Hosta. China Architecture & Building Press, Beijing
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This work is supported by the National Natural Science Foundation of China (grant no. 30470106) and the Beijing Natural Science Foundation of China (grant no. 8102012).
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Liu, JX., Zhao, CH., Liu, XR. et al. Pollen morphology of Hosta Tratt. in China and its taxonomic significance. Plant Syst Evol 294, 99–107 (2011). https://doi.org/10.1007/s00606-011-0448-9
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DOI: https://doi.org/10.1007/s00606-011-0448-9