Trifolium sect. Trifolium

Trifolium sect. Trifolium
	Meadow clover ( Trifolium pratense ), the type species of the section
Systematics
Order :	Fabales (Fabales)
Family :	Legumes (Fabaceae)
Subfamily :	Butterflies (Faboideae)
Tribe :	Trifolieae
Genre :	Clover ( trifolium )
Section :	Trifolium sect. Trifolium
Scientific name
	Trifolium sect. Trifolium
	Zohary

Trifolium sect. Trifolium is a section in the genus clover ( Trifolium ). With 74 species in South Africa and Eurasia, it is the second largest section of the genus. It is divided into 17 relatively small but natural groups, which have been described as subsections. The main hallmarks of this section are: Sessile flowers without bracts , often hairy corolla tubes and solitary fruits without seams.

description

Types of the section Trifolium are annual or perennial herbaceous plants . The inflorescences are terminal, or axillary. They are seated or have a short stalk.

The flowers have no bracts or very rarely have a few bract-leaf trudiments. The calyx is 10 to 20 annoying in almost all species. It is hairy or rarely bald. The calyx teeth are unequal or similar. The calyx is usually closed, if open with a hairy ring around the opening. The crown is mostly at least partially fused. The legume remains completely in the calyx tube. It is solitary or two-seeded in very few species.

distribution

The species of the Trifolium section are common in South Africa and Eurasia, but are absent in North America and Africa.

Systematics

The types of the Trifolium section and their assignment according to Zohary and Heller are:

Internal systematics and types of the Trifolium section

Intermedia subsection : Middle clover ( Trifolium medium )

Alpestria subsection : purple clover ( Trifolium rubens )

Stellata subsection : Incarnate clover ( Trifolium incarnatum ) - habitus

Stellata subsection : inflorescences of the star clover ( Trifolium stellatum )

Subsection stenosemium : striped clover ( Trifolium striatum )

Subsection Arvensia : Hare-Clover ( Trifolium arvense ) - inflorescences

Subsection Clypeata : Shield clover ( Trifolium clypeatum )

Trifolium
section
- Trifolium subsection
  
  Trifolium andricum Lassen
  
  Spread clover ( Trifolium diffusum Ehrh. )
  
  Trifolium mazanderanicum Rech.f.
  
  Noric clover ( Trifolium noricum Wulf. )
  
  Pale clover ( Trifolium pallidum Waldst. & Kit. )
  
  Meadow clover ( Trifolium pratense L. )

literature

Michael Zohary, David Heller: The Genus Trifolium . The Israel Academy of Sciences and Humanities , Jerusalem 1984, ISBN 965-208-056-X .

Individual evidence

↑ Per Lassen: Trifolium andricum (Fabaceae), a new species from Greece . In: Annals of the Natural History Museum in Vienna . 98 B Suppl. 1996, p. 301-303 ( PDF file ).
^ Werner Greuter: The flora of Psara (E. Aegean Islands, Greece). An annotated catalog . In: Candollea . tape 31 , no. 2 , 1976, p. 215 .

[Lassen-1] Per Lassen: Trifolium andricum (Fabaceae), a new species from Greece . In: Annals of the Natural History Museum in Vienna . 98 B Suppl. 1996, p. 301-303 ( PDF file ).

[Greuter-2] Werner Greuter: The flora of Psara (E. Aegean Islands, Greece). An annotated catalog . In: Candollea . tape 31 , no. 2 , 1976, p. 215 .