Floral microcharacters in Lessingianthus (Vernonieae, Asteraceae) and their taxonomic implications

Angulo, Maria Betiana; Dematteis, Massimiliano

doi:10.1007/s00606-014-1019-7

Cited by 19 publications

(33 citation statements)

References 26 publications

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“…Type I trichomes agrees morphologically with type I reported from Lessingianthus (Angulo and Dematteis 2014) and Chrysolaena (Via do Pico et al 2016). This trichome type was also found on the style branches and phyllaries of some species of Lepidaploa (Table 2, 3).…”

Section: Key To Species Ofsupporting

confidence: 88%

“…Type III trichomes, observed in some species of Lepidaploa on the corolla lobes and phyllaries, is common in Vernonieae and have previously been found on the corolla and bracts of the inflorescence of some species of Vernonia studied by Narayana (1979), on the corolla of Lessingianthus (Angulo and Dematteis 2014) and Chrysolaena (Via do Pico et al 2016), and on the leaves of species of Chronopappus DC., Eremanthus Less., Lychnophora Mart., Lychnophoriopsis Sch. Bip., Paralychnophora MacLeish and Piptolepis Sch.…”

Section: Key To Species Ofmentioning

confidence: 70%

“…As such, the cluster analysis clearly corroborates the importance of microcharacters to separate Lepidaploa species groups. The taxonomic importance of microcharacters for Lessingianthus was shown by Angulo and Dematteis (2014) and Angulo et al (2015). Although there are some fused terminals in the phenogram (UPGMA), the species present in these terminals are distinguished in the key by means of trichome types on the phyllaries and corolla, and crystal types on the cypsela and carpopodium.…”

Section: Cluster Analysismentioning

confidence: 99%

“…The well-developed stylar basal node has been considered as the main microcharacter that distinguish Lepidaploa from Chrysolaena and Lessingianthus (Robinson 1999), but it is quite variable and cannot be used as a diagnostic microcharacter for the genus. Angulo and Dematteis (2014) and Via do Pico et al (2016) showed that some species of Lessingianthus and Chrysolaena have a basal stylar node, although it is poorly developed. In Lepidaploa most species have a well-developed basal stylar node; however, in L. balansae and L. pseudomuricata, a poorly developed node was observed, made up from several rows of thick-walled cells such as those found in Chrysolaena and Lessingianthus.…”

Section: Taxonomic Implicationsmentioning

confidence: 99%

“…Cassini (1813aCassini ( , b, c, 1814Cassini ( , 1816aCassini ( , b, 1817Cassini ( , 1818aCassini ( , b, 1819a was a pioneer in studies of floral microcharacters in Asteraceae and he used them to circumscribe several tribes. These kinds of characters have since been repeatedly used as a taxonomic tool in Asteraceae (Robinson 1988a, b, 1990, Isawumi 1999, Meric 2009, Redonda-Martínez et al 2012, Wagner et al 2013, Angulo and Dematteis 2014, Angulo et al 2015, Via do Pico et al 2016, Redonda-Martínez 2017.…”

Section: Introductionmentioning

confidence: 99%

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The taxonomic utility of micromorphology in Lepidaploa (Vernonieae: Asteraceae)

Marques

Angulo

Nakajima

et al. 2018

Nordic Journal of Botany

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Lepidaploa belongs to tribe Vernonieae, one of the most complex tribes of Asteraceae, and the relationships within Lepidaploa and among related genera are poorly understood. Microcharacters may be of taxonomic value and may be used in the identification of taxa at different ranks. To evaluate the reliability of microcharacters as taxonomic markers in this group, we analysed the micromorphology of phyllaries, florets and cypselae in detail in 23 species of Lepidaploa .The species were studied using stereo, light, and scanning electron microscopy. Eight trichome types (eglandular and glandular) were observed on phyllaries, florets and cypselae, in addition to crystals, idioblasts and other microstructures. The results demonstrates that the ocurrence of different combinations of trichome types and crystals, presence of a stylar basal node, idioblasts and glandular apical anther appendages are highly useful to differentiate between related species of Lepidaploa and a diagnostic key using these characters is presented. However, these characters are not of much use to distinguish between closely related genera of Vernonieae since most characters appear homeoplasic and are found in representatives of different genera.

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Section: Key To Species Ofsupporting

confidence: 88%

Section: Key To Species Ofmentioning

confidence: 70%