Sunflower
The sunflower (Helianthus annuus) is an annual(iga aastane) plant in the family
Asteraceae, with a large flower head (inflorescence(õiekobar, õisik, õitseaeg, õidumine)).
The stem(tüvi) of the flower can grow up to 3 metres tall, with the flower head reaching
30 cm in diameter. The term "sunflower" is also used to refer(nimetama, viitama, üle
andma) to all plants of the genus(perekond, sugu) Helianthus, many of which are
perennial(alaline, aastaringne) plants.
What is usually called the flower is actually a head (formally(ametlikult) composite(liit-,
komposiit- ; korvõieline, komposiit) flower) of numerous flowers (florets)
crowded(täistuubitud, tunglev, rahvarohke) together. The outer flowers are the ray
florets(pähik (õisiku osa) and can be yellow, maroon, orange, or other colors, and are
sterile(steriilne, viljatu). The florets inside the circular head are called disc florets.
Sunflower head displaying florets in spirals of 34 a...
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