@article {ElOualidi:1999p704,
	title = {Utility of rDNA ITS sequences in the systematics of Teucrium section Polium (Lamiaceae)},
	journal = {Plant Syst Evol},
	volume = {215},
	number = {1-4},
	year = {1999},
	month = {Jan},
	pages = {49{\textendash}70},
	abstract = {A phylogenetic study based on sequence data from the complete internal transcribed spacer region (ITS) of nuclear ribosomal DNA for sect. Polium of the genus Teucrium shows both intersectional congruence and intrasectional incongruence with traditional morphological classifications. We attribute this incongruence largely to problems related to the polyploid complex studied. Section Polium includes many poorly differentiated taxa of probable recent origin through hybridization followed by polyploidization. Both on the basis of parsimony and distance (Neighbor-Joining method) analyses, T. dunense and T. thymifolium are the species that diverge most from the sampled taxa. However, unlike T. thymifolium, the morphology of ir: dunense is not much differentiated in relation to the other taxa. Both species are, nonetheless, the only sampled species to occupy isolated, exclusive environments and which may have undergone rapid evolution by a bottleneck effect. Teucrium dunense is found only on dunes along the Spanish and French coasts and ir: thymifolium, a chasmophytic species with limited endemism, is found solely on limestone and dolomite cliffs in the low mountains in south-eastern Spain. A hypothesis is presented to explain the discrepancy between the observed comparatively large amount of ITS sequence divergence and the low morphological differentiation in T. dunense.},
	keywords = {Evolution, Internal Transcribed Spacer Region (Its), Labiatae, Lamiaceae, Nuclear Ribosomal Dna, Nucleotide-Sequences, Phylogenetic Analysis, Phylogeny, Polyploid Complex, Populations, Rbcl, Sect. Polium, Teucrium, Transcribed Spacer Sequences, Trees},
	author = {J El Oualidi and O Verneau and S Puech and JY Dubuisson}
}
@article {Juan:2004p8021,
	title = {Amino acids composition of Teucrium nutlet proteins and their systematic significance},
	journal = {Annals of Botany},
	volume = {94},
	number = {4},
	year = {2004},
	month = {Oct},
	pages = {615{\textendash}21},
	abstract = {BACKGROUND AND AIMS: Plant species are considered as a good source of dietary proteins, although the nutritional quality of proteins depends on their amino acid composition. In this work the protein content and amino acid composition of nutlets of 21 Teucrium taxa (Lamiaceae) from Spain were analysed and their nutritional quality was compared with the minimum values established by the Food and Agriculture Organization of the United Nations (FAO). In addition, the amino acid composition was evaluated as a chemical character to clarify the taxonomic complexity in this genus. METHODS: Amino acid content of nutlets was determined after derivatization with diethyl ethoxymethylenemalonate by high-performance liquid chromatography. Previously, nutlets samples were hydrolysed and incubated in an oven at 110 degrees C for 24 h. KEY RESULTS: The protein content was variable, ranging from 6.4 \% in T. dunense to 43.8 \% in T. algarbiense. According to the FAO values all taxa contain satisfactory amounts of leucine, threonine and valine and are deficient in lysine. The similarity analysis of Teucrium taxa using amino acid composition data did not clearly reflect the infrageneric classification of this genus. CONCLUSIONS: Annual species, such as T. spinosum, T. aristatum and T. resupinatum showed a better balanced amino acid composition. The dendrogram partly matched with the karyological complexity of Teucrium. No correlation between amino acid composition and habitat has been observed, showing that Teucrium nutlet amino acid composition may not be strongly influenced by the environment.},
	keywords = {Amino Acids, Amino Acids: Essential, Evolution: Molecular, Fruit, Nutritive Value, Phylogeny, Plant Proteins, Species Specificity, Teucrium},
	doi = {10.1093/aob/mch181},
	author = {R Juan and J Pastor and F Mill{\'a}n and M Alaiz and J Vioque}
}
