Systematics value of micromorphological and palynological characters in Stenocephalum Sch.Bip. (Vernonieae, Asteraceae)

María Betiana ANGULO; Laura CHALUP; Massimiliano DEMATTEIS

Article Details

Systematics value of micromorphological and palynological characters in Stenocephalum Sch.Bip. (Vernonieae, Asteraceae)

Authors:

María Betiana ANGULO | Laura CHALUP | Massimiliano DEMATTEIS

Publisher:

TUBITAK

Journal:

Turkish Journal of Botany 2018 Vol.42 Issue 4, pp.478-490

Document Type:

Article

Publication Date:

7/2018

Document Language:

English

Document ID (Org No.):

2000815073

Frequency:

Bimonthly

eISSN:

1303-6106

pISSN:

1300-008X

Abstract:

 

Micromorphological and palynological characters of all Stenocephalum
 Sch.Bip. species (Vernonieae, Asteraceae) were analyzed to evaluate 
their reliability as taxonomic markers at generic level and discussed in
 relation to other genera of the subtribe Lepidaploinae. Characters such
 as pubescence of corollas and cypselae showed glandular and 
nonglandular trichomes allowing differentiation among related species. 
Apical appendages without glandular trichomes, caudate anthers, and 
carpopodium structure are
common characteristics among Stenocephalum species. With the exceptions of S. megapotamicum and S. tragiaefolium,
 almost all species of the genus showed style bases without basal nodes 
for the first time. Crystals on the fruits wall were also observed for 
the first time in almost all the Stenocephalum species, with the exception of S. hystrix.
 However, the crystals would not constitute diagnostic features,
since they vary widely among species. All the species showed type C 
pollen and the genus is considered stenopalynous. However, highly 
significant differences in palynological features among the species of 
the genus were observed. The different combinations of the 
micromorphological and palynological features of Stenocephalum 
here analyzed are valuable within genera to differentiate related 
species from one another. The value of all these characters could be 
increased if they are combined with other morphological or traditional 
data.

Article Details

Systematics value of micromorphological and palynological characters in Stenocephalum Sch.Bip. (Vernonieae, Asteraceae)

Authors: María Betiana ANGULO | Laura CHALUP | Massimiliano DEMATTEIS

Publisher: TUBITAK

Journal: Turkish Journal of Botany 2018 Vol.42 Issue 4, pp.478-490

Document Type: Article

Publication Date: 7/2018

Document Language: English

Document ID (Org No.): 2000815073

Frequency: Bimonthly

eISSN: 1303-6106

pISSN: 1300-008X

Issues

Authors:

María Betiana ANGULO | Laura CHALUP | Massimiliano DEMATTEIS

Publisher:

TUBITAK

Journal:

Turkish Journal of Botany 2018 Vol.42 Issue 4, pp.478-490

Document Type:

Article

Publication Date:

7/2018

Document Language:

English

Document ID (Org No.):

2000815073

Frequency:

Bimonthly

eISSN:

1303-6106

pISSN:

1300-008X