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(SPEC) Iris eulefeldi Regel

Eulefeldi 1878?, Botanical author Regel

'Eulefeldi' (Edward August von Regel, 18-); As Iris Eulefeldii Regel, in Act. Hort. Petrop, vol. v. p.833; Gartenflora, vol. xxvii. (1878), p. 324, t. 954. As I. glaucescens Bunge var. Eulefeldi Maxim in Bull. Acad. Petersb. Vol. xxv.; Regel Descript. Pl. Nov. fasc. Vii. P. 212.

John Gilbert Baker makes the following notes on Iris Eulefeldi in :
"Prof. Michael Foster, F.R.S., to whom I am indebted for the following description and remarks, informs me that I. Eulefeldi is a shy flowerer, but that the foliage remains green all summer, not dying down in July and shooting again in August like the Oncocycli and many other Central Asian Irises. It dies down late in Autumn, and does not shoot again until March or April. The colour of the flower is of extraordinary beauty and delicacy, very difficult to describe. As yet Prof. Foster adds, I know no Iris like it, being unlike the Oncocycli, or any of our European dwarf species of the genus. It makes a distant approach to I. Bloudowi, but without capsule and seeds its amount of affinity cannot be determined. Its distinctive features are its rhizome, foliage, spathe-valve, colour of flower, and especially the form of the narrow long cuneate segments of the perianth. Maximovicz makes it a variety of I. scariosa Pallas (I. glaucescens Bunge), but according to Ledebour's description of that plant, I. Eulefedi would appear to be abundantly distinct.
The treatment of I. Eulefeldi is that of iberica, namely keeping it dry, and under glass in summer. It flowered in the Botanical Gardens of Cambridge in May, and in Kew at about the same time, and is a native of mountains near Suiden at an elevation of 5,000 to 6,000 feet.
Descr. Rhizome compact, as in ordinary Pogoniris, The new bud remaining attached to the old part of the rhizome by a broad base about an inch in diameter, not by a narrow prolonged base as in I. Korokovi, Leichtlinii and others of the Oncocycla group. Leaves five to six in a cluster, one foot or more long, and one inch or more broad, more or less falcate, acute, of so remarkably glaucous a grey green colour that the species may thereby be recognized from all others at present in cultivation. Scape about one foot high, with a bract sheathing leaf about halfway up, bearing at the summit two flowers with spathe valves. Spathe-valves two by five-eighths of an inch, pointed, subnavicular, veins obscure, pale green at first, finally colorless and diverging, exposing the ovary. Tube of perianth thick, about twice as long as the ovary, red-purple. Outer segments cuneate-obovate, obtuse, very recurved; veins brown, or purplish on the claw, purple on the limb; beard long, exceeding the claw, hairs white tips blue-purple, papillose. Inner segments erect, connivent, narrowly cuneate-spathulate, veins thickish and red brown on the yellow claw, redder on the blade with blue-purple prolongations of a peculiar hue towards the margin. Anthers narrow; pollen scanty, blue, fine-grained. Style tall, blue-purple.," See also Iris scariosa Willdenow.

Eulefeldii Bot Mag 6902.jpg

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-- Main.RPries - 2010-01-11
Topic attachments
I Attachment Action Size Date Who Comment
Eulefeldii_Bot_Mag_6902.jpgjpg Eulefeldii_Bot_Mag_6902.jpg manage 116 K 20 Nov 2013 - 22:02 BobPries Biodiversity Heritage Library
Topic revision: r4 - 30 Jan 2016, Harloiris
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