■(SPEC) 'Ruthenica Nana' aka Iris ruthenica var. nana Nakai

1922, Botanical author Nakai

'Ruthenica Nana' (Takenoshin Nakai, 1922). Section Limniris, Series Ruthenicae. Color Code-S4; Yellow-toned blend-according to 1939 checklist, but plants grown today are shades of purple indicating a probable error; dwarf form with almost stemless flowers and leaves only about 5 cm long and 1 mm. wide; Chugai 1932. Maxim. In Bull. Acad. Sci. St. Petersb. 26:516. 1880;

See below:

• * References

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References:

Gawler in Curtis's Botanical Magazine tab. 1123. 1808, gives the following description; "Plant cespitose; rootstock creeping, in spontaneous specimens toughened and covered by remnants of precedent leaves mixed with filiform threads; Sterile fascicles of several narrow, linear-gramineous, nerved leaves, from four to six inches high, downwards edgewise-equitant and sheathing each other conduplicately; towards diverging distichly; flowering stem extrafoliaceous, about two-inches high; with two or more sheath-like leaflets, terminated by a bivalved, one-flowered, compressed-lanceolate, subspatulate spathe, which envelops the pedicled germen; corolla varying from blue to white, exceeding fragrant, with the scent of violets, and in proportion to the plant large; tube round, short, about the length of the germen, and many times shorter than limb, gradually enlarged into a turbinate faux, cuniculate not solid; inner segments upright-divergent, linear lon-unguiculate, about one-fourth shorter than the others and nearly three times narrower; outer beardless, with recurved reflected laminae; style about the length of the tube, from which it is entirely free; segments of the inner lip of the stigma serrately toothed; filaments adnate to the tube; germen ovary cylindrical, three times shorter than pedicle; capsule as described by Gmelin, turbinate, trigonal, and the seeds roundish and black, but sometimes pressed into different forms by mutual contact; we suspect the stem is considerably elongated during the development of the fruit." "Native of Siberia, Dauria, and their neighboring districts within the Russian empire. Although completely described and excellently delineated in the Flora Sibirica of Gmelin, It has not been taken up-in any general arrangement of vegetables that we have seen, or received a specific name till now. Our present plant was raised from seeds imported by Mr. Loddiges of Hackney, with whom it flowered early in May 1806 and in the present year. Comes very near to the North-American verna, which has however a far longer tube to the corolla. The Banksian Herbarium contains several native specimens of both species."-Gawler. Makino Ic. Pl. Nippon 2: tab. 6. 1907, illustrated; Makino et Nemoto, Fl. Jap. Ed. 2, 1593. 1931. Chugai 1932; Thomson 1932; Hocker 1932; 1938; Wada 1937; 1938; Per. 1940. Fig. 17. Waddick & Zhao, Iris of China, 1992, illustrated in color; Iris nana is a dwarf form with almost stemless flowers and leaves only about 5 cm long and 1 mm. wide; Nakai in Mori, Enum. Pl. Cor. 98 (1922). 2n=40, Dong et al., 1994. [Iris ruthenica var. nana Maxim.].

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-- BobPries - 2010-02-11