Tozzia

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Tozzia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Orobanchaceae
Tribe: Rhinantheae
Genus: Tozzia
L.
Species:
T. alpina
Binomial name
Tozzia alpina

Tozzia is a

monotypic genus of flowering plants within the broomrape family Orobanchaceae. It contains a unique species
, Tozzia alpina.

While the plant in its young, vegetative stage is

hemiparasite in its flowering stage. The originality of this species is therefore to combine half and full parasitism.[1][2][3]

The range of Tozzia alpina extends from the Pyrenees and the Alps to the Balkans and the Carpathians.[4]

Description

Vegetative features

Tozzia alpina is a

serrate, with a length of 1 to 3.5 centimeters, a rounded or slightly heart-shaped basis, and a sharp upper end.[3]

Reproductive features

The zygomorphic flowers

The flowering period is from June to August. The hermaphroditic

zygomorph flowers are organized into a raceme inflorescence. The bracts have a 3 to 10 millimeters long, thin, one-sided hairy stalk.[3] The fruit is spherical with a diameter of 2 to 2.5 millimeters. The seeds are almost spherical, smooth and white with a round black spot.[3]

Systematics

The genus name Tozzia was given in 1729 by

taxonomic patronym in honor of Bruno Tozzi, a monk and later abbot of the monastery Vallombrosa at Reggello
in Tuscany, who published in 1703 a work about Tuscan plant species.

The first description of the species Tozzia alpina was made in 1753 by

Carl von Linné
.

Two subspecies have been described:[4]

  • Tozzia alpina L. subsp. alpina, occurring in Spain, France, Switzerland, Germany, Austria, Italy, and former Yugoslavia ;
  • Tozzia alpina subsp. carpathica (Wolł.) Pawlł. (Syn: Tozzia carpathica Wolł.), occurring in Poland, Czech Republic, Slovakia, Romania, Bulgaria, and Ukraine.

Phylogeny

The phylogeny of the genera of Rhinantheae has been explored using molecular characters.[5][6] Tozzia belongs to the core Rhinantheae. Tozzia is closely related to Odontites, Bellardia, and Hedbergia. In turn, these genera share phylogenetic affinities with Euphrasia, and then with Bartsia.

Genus-level cladogram of tribe Rhinantheae.
  Rhinantheae  
         

  Melampyrum  

         

  Rhynchocorys  

         

  Lathraea

  Rhinanthus

  Core Rhinantheae  
         

  Bartsia sensu stricto (Bartsia alpina)

         

  Euphrasia

         

  Hedbergia
  (including Bartsia decurva + B. longiflora)

  Tozzia

  Odontites sensu lato
  (including Bartsiella
  and Bornmuellerantha)

         

 

Bellardia

         

 

Neobartsia

(New World Bartsia)

  Parentucellia

The cladogram has been reconstructed from nuclear and plastid DNA molecular characters (ITS, rps16 intron and trnK region).[5][6]

Ecology

Tozzia alpina is a

hemiparasite with its own assimilation, but still receives nutrients from the host plant
.

It thrives at altitudes of 800 to 2600 meters. In the Allgäu Alps it rises at the Linkerskopf in Bavaria up to an altitude of 2200 meters.[7] It also prefers lime-rich and nutrient-rich, wet-fresh to moist clay soils, with northern exposures.[1]

References

  1. ^
    ISSN 0005-8041
    .
  2. .
  3. ^ .
  4. ^ a b Marhold, Karol (2011). "Tozzia". Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
  5. ^
    S2CID 39873516
    .
  6. ^ .
  7. .
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