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Bulletin of Botanical Research ›› 1987, Vol. 7 ›› Issue (4): 1-10.

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Tsui Hung-pin   

  1. Institute of Botany, Academia Sinica, Beijing
  • Online:1987-12-15 Published:2016-06-13

Abstract: This paper discusses some problems on trib. Laureae as follows:1. The trib. Laureae, represented dy Laurus, differs from the trib. Cinnamomeae Baill. in the involucral bracts decussate. It is most probable that the pseudo-umbel is a shortened, metamorphic flowering shoot. Its leaves transform into involucral bracts at the base of the pseudo-umbel. The spiral arrangment of involucral bracts precedes that of decussate type. 2. In Fl. R. P. S. 31:242. 1982, the systematic position of Actinodaphne being included in trib. Litseeae Mex is inappro-priate. For its alternate involucral bracts Actinodaphne should belong to the trib. Cinnamomeae Baill. 3. The type-specimen Exped. Pl. Qing-Zang 74-2728, para-types Exped. Pl. Qing-Zang "budian" 75-1618, Yü 17296 and Yü 20204 of Litsea monantha Yang et P. H. Huang had been cited by Li (1985) and paratypes Yü 17296, 20204 by D. G. Long(1984) under Dodecadenia grandiflora Nees. I have examined the type-specimen Exped. Pl. Qing-Zang 74-2728 (♂) and paratype Exped. Pl. Qing-Zang "budian" 75-1618 (♀). They have unis-exual flowers separately, so I transfer Litsea monantha Yang et P. H. Huang to Actinodaphne. 4. There are many important characters common to Iteada-phne Blume and Lindera Thunb. (see tab. 1.). The author agree with the opinion of A. J. G. H. Kostermans that Iteadaphne Blume should be reduced to Lindera Thunb. as a subgenus, Lindera subgen. Iteadaphne (Bl.) Kosterm. 5. The diagnostic character of genus parasassafras enumerated by Long are so vague that there is no clear distinction between Parasassafras and Actinodaphne. I reduce Parasassafras to Actinodaphne here. 6. H. W. Li established a new monotypic genus Sinosassafras based on S. flavinervia (Allen) H. W. Li (Lindera flavinervia Allen). The specimen Yü 18160 is type of Lindera flavinervia Allen and Yü 17245 is its paratype. They are kept in the Herbarium of the Arnold Arboretum. I had an opportunity to examine the duplicate specimens of these numbers in Kun-ming Institute of Botany. Unfortunately the involucral bracts of these specimens had fallen, and whether they are alternate or decussate is uncertain. I had also examined another specimen of Lindera flavinervia Allen, C. W. Wang 72183, which was collected in Chen-Kang Hsien, Province Yunnan, the same locality of the paratype of Lindera flavinervia Allen. The invol-ucral bracts of the specimen C. W. Wang 72183 are evidently decussate. I consider that the involucral bracts of Lindera flavin-ervia Allen are decussate, and therefore Sinosassafras H. W. Li should be reduced to Lindera Thunb. 7. The monotypical genus of Umbellularia Nutt. is the mem-bers of trib. Cinnamomeae Baill. However, it is very alike to the members of trib. Laureae with its pseudo-umbel and 2 almost opposite outer involucral bracts.