Some morphological markers of Teucrium section Polium (Lamiaceae) from Morocco. Diagnostic values at different levels of integration
DOI:
https://doi.org/10.24310/abm.v18i.8989Keywords:
Teucrium section polium, morphological marker, taxonomic value, integration level polytypical species, unidimensional species, biosystematicAbstract
The section polium of the genus Teucrium (Lamiaceae) is composed of groups of taxa that set problems of determination. This difficulty is the direct consequence, for a great number of taxa, of a lack of stable characters at the level of the species. This paper presents some morphological markers at different integration levels, the taxonomic value of which was tested in a biosystematic study we carried out, based on multiple characters.
Among these diagnostic characters we quote the proximal lobes and the trichomes of the throat of the corolla at the level of the subsection ; the leaves crenellated from the base, the shape of the calyx at the level of the group of species ; the simple and bifide trichomes at once, the presence of adventive roots at the level of polytypical species ; and some other characters at the level of non-dimensional species (or reduced-areas species) such as the plagiotropism of secondary and tertiary axes of inflorescence, the flower architecture, the presence more or less marked of proximal lobes and the seed surface.
Downloads
Metrics
References
BENTHAM, G. -1832/1836- Labiatarum genera et species or A description of the genera and species of plants of the order Labiatae. Ridgway & sons, London, 783p.
BRADSHAW, A.D. -1965- Evolutionary significance of phenotypic plasticity in plants. Adv. Genet., 13: 115-155.
BRIQUET, J. -1891- Les Labie?es des Alpes maritimes Georg., Gene?ve, 587pp.
COHEN, E. -1956- Contribution a? l'e?tude des Teucrium marocains de la section polium. Tray. Inst. Sci. Che?rifien. Se?r. Bot., 9, 88p.
EL OUALIDI, J. - 1987- Approche de l'e?tude biosyste?matique des Teucrium de la section polium (Lamiaceae) du Maroc. Contribution a la «Flore pratique du Maroc». DEA Sciences de l'evolution et e?cologie, USTL, 91p.
EL OUALIDI, J. -1991- Biosyste?matique et taxinomie des Teucrium de la section polium (Lamiaceae) dans le bassin me?diterrane?en occidental. Diffe?rents aspects de la variation au Maroc, en France et en Espagne. These Doct., USTL, Montpellier II, 220p.
FENNANE, M., J. MATHEZ, A. OUYAHYA & C. RAYNAUD -1986- Elements pour la Flore pratique du Maroc, fasc. 1. M. FENNANE & J. MATHEZ ed. Naturalia Monsp. se?r. Bol., 50:5- 52
MAYNARD SMITH, J. -1989- Evolutionary genetics. Oxford University Press, Cambridge, 325p.
MAYR, E. -1963- Animal species and evolution. Harvard Univ. Press, Cambridge, Massachussets, 453p.
NAVARRO, T. -1988- Estudios biosistema?ticos en el ge?nero Teucrium (Seccio?n polium subseccio?n polium) en la Peni?nsula Ibe?rica (Lamiaceae). Tesis Doctoral Univ. de Granada, Fac. de Ciencias, 2: 173+171p.
PUECH, S. -1976- Recherches de biosyste?matique sur les Teucrium (Labie?es) de la section polium du bassin me?diterrane?en occidental (Espagne et France). These Doct. Sci., U.S.T.L., Montpellier, 138p.
PUECH, S. -1980- Les Teucrium de la sect. polium aux iles Baleares (Majorque). Bull. Soc. Bol. Fr., 127, Lett. Bot., (1): 41-52.
PUECH, S. -1984- Les Teucrium (Labie?es) de la sect. polium du bassin me?diterrane?en occidental (France et pe?ninsule ibe?rique). Naturalia Monsp., A5, 71p.
PUECH, S. -1990- Contribution a l' etude de biosyste?matique des Teucrium de la section polium (Labiatae) de Tunisie III. Bull. Soc. Bot., 137, Lett. Bol., (1) : 63-76.
SAUVAGE, Ch. & J. VINDT -1955- Synopsis du genre Teucrium Sect. polium au Maroc. Bull. Soc. Sc. Nat. Phy. du Maroc, 35: 283-293.
SAUVAGE, Ch. & J. VINDT -1965- Synopsis du genre Teucrium Sect. polium au Maroc (suite et fin). Naturalia Monsp., 16: 195-200.
SLATKIN, M.K. -1987- Gene flow and the geographic structure of natural populations. Science, 236: 787-792.
STACE, C.A. -1988- Plant taxonomy and biosystematics. Edward Arnold 2nd.ed 264p.
STEARNS, S.C. -1989- The evolutionary significance of phenotypic plasticity. Phenotypic sources of variation among organisms can be described by developmental switches and reaction norms. Bio Science, 39(7): 436-445.
Downloads
Published
How to Cite
Issue
Section
License
Those authors who publish in this journal accept the following terms:
a. The authors will retain their copyrights and guarantee the journal the right of first publication of their work, which will be simultaneously subject to the Creative Commons Attribution-Non-commercial 4.0 license whose full text can be found at <http: // creative commons .org / licenses / by-nc / 4.0> that allows third parties to share the work as long as its author and its first publication are indicated, and as long as it is not for commercial purposes.
b. Authors may adopt other non-exclusive licensing agreements for the distribution of the version of the published paper (e.g., deposit it in an institutional telematic file or publish it in a monographic volume) provided that the initial publication in this journal be indicated.
c. Authors are allowed and recommended to disseminate their work through the Internet (e.g., in institutional telematic archives or on their websites) before and during the submission process, which can produce interesting exchanges and increase citations of the published work. (See The effect of open access)
1.png)
