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It is a tuberous-rooted herbaceous perennial growing to 15 cm (6 in), with large (2–3 cm (1–1 in)), yellow, cup-shaped flowers held above a collar of 3 leaf-like bracts, appearing in late winter and early spring. The six sepals are bright yellow and petaloid, and the petals are of tubular nectaries. [2]
They have the typical inflorescences of the family, in which what may appear to be a single flower is actually a composite flower head composed of many individual flowers or florets. Small tightly packed florets make up the central disc, which is surrounded by florets with longer petals (ligules), making up the rays of the complete flower head.
In addition, the Japanese call the golden yellow color (variously #FFA400, #FFBF00, #F8B500) between orange and yellow yamabuki color (山吹色 yamabuki-iro), from the name of the plant. Qing Dynasty poet Chen Hao ( 陳淏 ) celebrated the beauty of Kerria japonica in his agricultural treatise the Flower Mirror [ ja ; zh ] ( 花鏡 ).
Inflorescence of Zantedeschia aethiopica, showing the white spathe surrounding the central, yellow spadix. Inflorescence: Takes the form of a solitary pseudanthium (false flower), with a showy white or yellow spathe (a specialised petal like bract) shaped like a funnel with a yellow, central, finger-like spadix, which carries the true flowers ...
[20] [8] Both fall and spring blooming crocuses are cultivated for their flowers. [110] Among the first flowers to bloom in spring, their flowering time can vary from fall to the late winter blooming C. tommasinianus; the earliest fall blooming species, C. scharojanii, may flower during the last weeks of July. [111]
It is a low perennial shrub 60 to 80 cm (23.5 to 31.5 in) high and 1.5 m (4.9 ft) across. The foliage is grey and the large flowers are 7–9 cm in diameter and golden yellow in colour. [47] It grows best in full sun and fair drainage. Cuttings strike readily, as does seed, although seedlings may differ from the parent. [36]
The inflorescence bears 6–20 flat star shaped flowers on ascending stems , 3–3.5 cm (1 + 1 ⁄ 4 – 1 + 1 ⁄ 2 in), associated with membranaceous leaflets , 2.5–3 cm (1– 1 + 1 ⁄ 4 in), in an open branching umbrella shaped terminal cluster, described as a corymbose raceme. [3]
Most of the species of Erica are small shrubs from 20–150 centimetres (8–59 inches) high, though some are taller; the tallest are E. arborea (tree heath) and E. scoparia (besom heath), both of which can reach up to 7 metres (23 feet) tall. All are evergreen, with minute, needle-like leaves2–15 millimetres (1 ⁄ 8 – 5 ⁄ 8 in) long.