This section is from the book "The Botanical Magazine; Or, Flower-Garden Displayed", by William Curtis. Also available from Amazon: The Botanical Magazine; or, Flower-Garden Displayed, Volume I.
Iris sibirica. Siberian Iris.
Cor. 6-petala, inaequalis, petalis alternis geniculato-patentibus. Stigmata petaliformia, cucullato-bilabiata. Thunb. Diss. de Iride.
IRIS sibirica imberbis foliis linearibus, scapo subtrifloro tereti, germinibus trigonis. Lin. Syst. Vegetab. p. 91.
IRIS pratensis angustifolia, non foetida altior. Bauh. Pin. 32.
IRIS bicolor. Miller's Dict. ed. 6, 4to.
The greater blue Flower-de-luce with narrow leaves. Parkins. Parad. p. 185. fig. 2.
This species of Iris is a native of Germany and Siberia, and is distinguished from those usually cultivated in our gardens by the superior height of its stems, and the narrowness of its leaves; from which last character it is often, by mistake, called graminea; but the true graminea is a very different plant.
The Iris sibirica is a hardy perennial, and will thrive in almost any soil or situation; but grows most luxuriantly in a moist one, and flowers in June.
Is propagated most readily, by parting its roots in autumn.