There is a small lie in the name. Sanguinea means blood, and yet the iris in front of you is blue, or blue running toward violet, with only a wine-dark deepening in the falls to argue the case. The botanists felt the strain too: Carl Thunberg first tried to file the plant as Iris orientalis in 1794, found that name already taken, and the species waited until 1813 for the one carried since. The Japanese never bothered with Latin. To them the flower is ayame, one of the three irises of early summer, threaded through a thousand years of poetry and arriving in that uncertain seam where the old poets could never quite agree whether spring had ended or summer begun.
Iris virginica takes the genus name that Linnaeus borrowed from Iris, the Greek goddess who carried messages along the rainbow, a fitting patron for a family that scatters every color through the flower. The species epithet virginica records where botanists first met the plant, in colonial Virginia, though Southern blue flag ranges far beyond, threading wet ground from the Chesapeake down through Florida and west to Texas, and north into the Midwest. In the wild the iris is an obligate wetland plant, at home in marshes, wet meadows, swamps, and the shallow margins of ponds where the roots can sit in standing water for weeks at a time.
Iris brevicaulis is the low, quiet member of a famous clan. One of the five wild species known collectively as the Louisiana irises, the plant carries broad blue to violet flowers on curiously kinked, zigzagging stems, so short that the blooms rarely clear the fan of sword-shaped leaves. Botanists call that back-and-forth habit fractiflex, and the trait gives the plant one of the common names, zigzag iris; the Latin brevicaulis, short-stemmed, records the same feature, while a third name, Lamance iris, honors the American horticulturist Lora La Mance.
Iris cristata is the iris scaled down for the woodland floor, a dwarf native barely six inches high that spreads into low, overlapping fans of bright green blades. In mid to late spring the mats light up with small flowers, an inch and a half to two inches across, in soft lavender-blue to violet, each fall stamped with a white patch and a raised orange or yellow ridge. That ridge is the crest that gives the plant both the Latin name cristata, crested, and the common name crested iris, and the feature sets the species apart from the bearded and beardless irises alike.
Among the wild irises of North America, Iris fulva is the one that broke the color rules. Where the family runs to blues, purples, and yellows, the copper iris opens in warm coppery red to burnt orange, a shade no other native iris offers, carried on slender stems in late spring and early summer with a soft, slightly drooping poise. The Latin fulva, meaning tawny or reddish-brown, records that unusual color, and the common names, copper iris and red iris, say the same thing more plainly.
A small crested iris with the carriage of an orchid and a quietly extraordinary biography. Iris japonica was named by Carl Peter Thunberg in 1794. Thunberg was a protege of Linnaeus and one of the only Western botanists allowed into Japan during the country's closed period, from 1775 to 1778, so much of what he brought back is, in a real sense, the first documented record of Japanese flora in Western science. The species had already reached Europe two years earlier, carried out of China by Thomas Evans of the East India Company in 1792. By the 1820s Pierre-Joseph Redoute, the same artist whose rose paintings turn up on every aunt's tea tray, was painting the plant under the older name Iris fimbriata in his Choix des plus belles Fleurs. A treasure of cultivated gardens for more than two centuries.
The horticulturist Scott Ogden, in Garden Bulbs for the South, sets the scene: the Japanese roof iris, Iris tectorum, is famous in the native country as a flower for planting on sod roofs, just as houseleeks are used on the cottage roofs of France. In gardens the silky green fans of leaves form large patches, a fine subject for the foreground of a shady border, and in April the ruffled, orchid-like blooms appear among the handsome leaves. In the common form these are a rich mottled blue with white crests; even lovelier, Ogden adds, are the white, yellow-crested blooms of the form offered here.
The horticulturist Scott Ogden, in Garden Bulbs for the South, sets the scene: the Japanese roof iris, Iris tectorum, is famous in the native country as a flower for planting on sod roofs, just as houseleeks are used on the cottage roofs of France. In gardens the silky green fans of leaves form large patches, a fine subject for the foreground of a shady border, and in April the ruffled, orchid-like blooms appear among the handsome leaves. This is the common form, in which the flowers open a rich mottled blue, veined and freckled toward the center, with white crests.
Iris verna is one of those plants that feels like a secret, small, fragrant, and impossibly charming once noticed. Native to the pinewoods and sandy slopes of the eastern United States, this understated iris has been a spring companion for centuries, brightening forest floors long before gardeners thought to give the plant a place at home.
