Chromosome numbers in the genusLychnophoraMart. (Lychnophorinae, Vernonieae, Asteraceae)
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چکیده
منابع مشابه
Pantoporate pollen in the Asteraceae (Vernonieae)
Pantoporate pollen, which occurs sporadically in the Monocots and Dicots, has now been found in Asteraceae in two apparently related genera of the tribe Vernonieae, Polydora Fenzl and Oocephala H.Rob. Disposition of pores in Polydora seems more asymmetric than in Oocephala. Based on the known relationships within the Vernonieae, some conjectures are made regarding development of the pantoporate...
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New combinations are provided in Distephanus for two species from Madagascar.
متن کاملCytotaxonomic studies in six species of Vernonia (Asteraceae: Vernonieae)
In this report, we describe a mitotic analysis (Giemsa technique) of six species of the genus Vernonia sensu Baker (Asteraceae, Vernonieae, section Lepidaploa) in order to assess the validity of maintaining this genus (sensu Baker) or dividing it into several lesser genera (sensu Robinson). Specimens of the seven species were collected in “cerrado” and “campo rupestre” areas in the states of Sã...
متن کاملLettowia, a new genus of Vernonieae from East Africa (Asteraceae)
A new genus, Lettowia H. Rob. & Skvarla is named for the single East African species originally described as Vernonia nyassae Oliv. Its pollen is lophate and triporate, with a perforated tectum restricted to the muri. The new genus is placed near Vernoniastrum in the subtribe Erlangeinae.
متن کاملA new species of Camchaya (Asteraceae, Vernonieae) from Thailand
Camchaya thailandica Bunwong, Chantar. & S.C.Keeley, sp. nov. from Phu Phrabat Historical Park, Udon Thani, Thailandis described as a new species. Plant of this new species are similar to Camchaya gracilis (Gagnep.) Bunwong & H.Rob. but differ in having ovate phyllaries without margin spines, 10-ribbed achenes, and broadly ovate leaves. This species is a rare endemic known only from the type co...
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ژورنال
عنوان ژورنال: Caryologia
سال: 2002
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.2002.10797889