Helianthus subcanescens

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Helianthus subcanescens E.Watson

Asteraceae

Life form: perennial

Exposure: sun  

Moisture: moderately moist bis Moisture: moist

Arrangement: alternate
Leaves: decidious

Shape: ovate

Division: simple

Shape: many-stellate
Fruit: achene

3A / f8da21 

Inflorescence: umbel

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Asteridae
Superordo:
Asteranae
Ordo:
Asterales

Helianthus subcanescens is a perennial.

Naming

Helianthus subcanescens was already described and the name validly published by Asa Gray. It was Elba Emanuel Watson, however, who reclassified it into todays valid botanical systematics in 1929.

Taxonomy

Helianthus subcanescens is a species in the genus Helianthus which contains approximately 74 to 208 species and belongs to the family of the Asteraceae (Aster Family). The type species of the genus is Helianthus annuus.

Characteristics

Growth

The perennials reach heights of 50 to 300 centimetres.

Leaves

Helianthus subcanescens is deciduous. The simple leaves are alternate. They are ovate, entire and petiolate.

Flowers and Fruits

Helianthus subcanescens produces umbels of yellow many-stellate flowers from August to October.

The perennials produce achenes.

Root System

Distribution

Cultivation

The perennials prefer a sunny situation on fresh to moist soil.

Uses

Maintenance and Propagation

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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