Acta Phytotaxonomica et Geobotanica
Online ISSN : 2189-7042
Print ISSN : 1346-7565
ISSN-L : 1346-7565
Morphological Variation in the Species of Cephalanthera (Orchidaceae) in Japan
Hiroshi HayakawaJun YamazakiAkihiro KonumaJun Yokoyama
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2016 Volume 67 Issue 3 Pages 199-203


We report four examples of morphological variation in the species of Cephalanthera (Orchidaceae) in Japan. We recognized a new peloric form, C. subaphylla Miyabe & Kudo f. conformis Hiros. Hayak. The new form has a tepal-like lip morphology. We also report variegation mutants of C. erecta (Thunb.) Blume var. erecta, which are albino-like in appearance. The above-ground parts of the mutants were withered at the immature seed stage during the end of June. We also observed variegated individuals of C. falcata (Thunb.) Blume f. falcata and C. falcata f. albescens S. Kobay. Finally, we discovered individuals of C. falcata f. falcata with a malformed flower at the top of an inflorescence with normal flowers in other parts of the same inflorescence from two localities.

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© 2016 The Japanese Society for Plant Systematics
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