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The flowers are bright yellow, 7–10 cm (2.8–3.9 in) across, with the typical iris form. The fruit is a dry capsule 4–7 cm (1.6–2.8 in) long, containing numerous pale brown seeds. I. pseudacorus grows best in very wet conditions, and is common in wetlands, where it tolerates submersion, low pH , and anoxic soils.
Iris chrysophylla, the yellowleaf iris, is a wildflower which ranges from midwestern and southern Oregon west of the Cascades and south to the crest of the Siskiyou Mountains in northern California. The yellowleaf iris grows up to 5,500 feet (1,700 m) elevation, most commonly in open, coniferous forests.
It is one of two iris species native to Britain, the other being the yellow iris (Iris pseudacorus). It has tufts of dark green leaves. [1] Its flowers are usually of a dull, leaden-blue colour, or dull buff-yellow tinged with blue. The petals have delicate veining. It blooms between June and July, but the flowers only last a day or so. [3]
"Japanese iris" is also a catch-all term for the Japanese iris proper (hanashÅbu), the blood iris (I. sanguinea, ayame) and the rabbit-ear iris (I. laevigata, kakitsubata). I. unguicularis is a late-winter-flowering species from Algeria, with sky-blue flowers with a yellow streak in the centre of each petal, produced from Winter to Spring.
The reticulata group of irises is characterised by a fibrous net surrounding the bulb. They are small plants to 15 centimetres (5.9 in), with tubular, sharply-pointed, ribbed leaves, and flowers of yellow, blue or purple with an orange blaze on the falls, appearing in early spring.
Like many irises, Iris tenax has large and showy flowers. The flowers bloom in mid to late spring and are usually lavender-blue to purple, but blooms in white, yellow, pink, and orchid shades are known to sometimes occur. The leaves are very slender for an iris, seldom over 5 mm broad; the plant is often mistaken for a type of grass when not in ...
In 1788, Curtis's Botanical Magazine, table 61, described Iris orientalis using the name Iris ochroleuca. [12] This was the start of the confusion between the two irises. [3] [7] [20] Because Iris ochroleuce was published later (by Carl Linnaeus in 1771 [14]), it is deemed unacceptable under the International Rules of Nomenclature. [10]
It is different in form to Iris pseudacorus, another yellow flowering iris found in Turkey. [2] It has a thick rhizome, covered with the fibrous remains of the bases of the previous seasons leaves. [3] It has grey-green, tough and erect leaves. [3] [4] They can grow up to between 30 and 80 cm (12 and 31 in) long, [2] and between 1 and 2 cm wide.