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''Rotheca'' is a genus of flowering plants in the family Lamiaceae.〔Raymond M. Harley, Sandy Atkins, Andrey L. Budantsev, Philip D. Cantino, Barry J. Conn, Renée J. Grayer, Madeline M. Harley, Rogier P.J. de Kok, Tatyana V. Krestovskaja, Ramón Morales, Alan J. Paton, and P. Olof Ryding. 2004. "Labiatae" pages 167-275. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). ''The Families and Genera of Vascular Plants'' volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. ISBN 978-3-540-40593-1〕 Estimates of the number of species in the genus vary from about 35 〔David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4〕 to as many as 60.〔 Three of the species are native to tropical Asia, with the rest occurring in Sub-Saharan Africa.〔 The type species for the genus is ''Rotheca serrata''. It had originally been named ''Rotheca ternifolia'', but this name is now considered illegitimate.〔Dorothy A. Steane and David J. Mabberley. 1998. "''Rotheca'' (Lamiaceae) Revived". ''Novon'' 8(2):204-206.〕 ''Rotheca myricoides'' is native to tropical East Africa and is cultivated as an ornamental throughout the tropics.〔George W. Staples and Derral R. Herbst "A Tropical Garden Flora" Bishop Museum Press: Honolulu (2005)〕 ''Rotheca serrata'' is from tropical Asia and has some medicinal use there.〔 In the 20th century, ''Rotheca'' was rarely recognized as separate from ''Clerodendrum''. ''Rotheca'' was revived in 1998 as a result of phylogenetic analysis of DNA sequences. It can easily be distinguished from ''Clerodendrum'' by a combination of morphological characters.〔 == Description == The following description is adapted from the most recent monograph on Lamiaceae.〔 ''Rotheca'' is a genus of shrubs, subshrubs, and perennial herbs, with a few becoming lianas or small trees. They emit an unpleasant odor when damaged. The leaves are opposite or whorled, and sessile or with a short petiole. The calyx is actinomorphic or nearly so, and not accrescent as in some related genera. The corolla is blue, purple, or white, (rarely yellow), and 5-lobed. The abaxial lobe is often larger and different in color. The four stamens are long-exserted. The ovary is unlobed at anthesis, becoming lobed during maturity. The fruit is 4-lobed and resembles a drupe, but eventually separates into four 1-seeded mericarps. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rotheca」の詳細全文を読む スポンサード リンク
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