centaurea {MorphoTools2}

25 Morphological Characters of Three Species of the Centaurea phrygia Complex

Description

The sample data include part of data sets from previously published studies by Koutecky (2007) and Koutecky et al. (2012): 25 morphological characters (see the cited studies for details) of the vegetative (stems and leaves) and reproductive structures (capitula and achenes) of three diploid species of the Centaurea phrygia complex: C. phrygia L. s.str. (abbreviated “ph”), C. pseudophrygia C.A.Mey. (“ps”) and C. stenolepis A.Kern. (“st”). Moreover, a fourth group includes the putative hybrid of the C. pseudophrygia and C. stenolepis (“hybr”). The data represent 8, 12, 7 and 6 populations for each group, respectively, and 20 individuals per population, with one exception in which only 12 individuals were available. All morphological characters are either quantitative (sizes, counts, or ratios) or binary (two characters states or presence/absence). In four characters of achenes (AL, AW, ALW, AP), there are missing data because fruits were not available in all individuals. In two populations of C. stenolepis (LIP, PREL) fruits were completely missing. In total, the data set includes 652 individuals (453 complete) from 33 populations (31 complete).

Usage

data(centaurea)

Format

an object of class morphodata with the following elements:

	ID	IDs of each row of data object.
	Population	population membership of each row of data object.
	Taxon	taxon membership of each row of data object.
	data	data.frame of individuals (rows) and values of morphological characters (columns).

References

Koutecky P. (2007). Morphological and ploidy level variation of Centaurea phrygia agg.(Asteraceae) in the Czech Republic, Slovakia and Ukraine. Folia Geobotanica 42, 77-102.
Koutecky P., Stepanek J., Badurova T. (2012). Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution. Preslia 84, 1-32.