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(SPEC) Iris fosteriana Ait. & Bak.

Iris fosteriana 1887, Aitchison & Baker

Iris fosteriana Ait. & Baker (J. E. T. Aitchison and John Gilbert Baker, 1887, Transcaspia & N. W. Afghanistan); Subgenus Scorpiris, Juno; Color Class-Y3; Aitchison & Baker in Trans. Linn. Soc. Ser. 2: 3, 114. 1887;

John Gibert Baker in Curtis's Botanical Magazine 118: tab. 7215. 1892, offers the following description along with the color illustration;
  • "This new species of bulbous Iris belongs to the same group as I. orchioides (Bot. Mag., tab. 7111)[actually I. bucharica], and I. sindjarensis (Bot. Mag., tab. 7145)[now I. aucheri]. From a horticultural point of view it differs from all its allies in the diversity in color of the different parts of the flower. It was discovered in 1884 by Surgeon-Major Aitchison, F.R.S., whilst acting as naturalist to the Afghanistan Delimitation Commission, growing plentifully at Badghis in dry soil on the low hills at an elevation of three thousand feet above sea-level. These spring-flowering bulbous Irises of Central Asia are difficult to cultivate in our comparatively damp sunless climate, but here, as in so many other cases, Professor Foster, after whom the species was named, has surmounted the difficulty, and our drawing was made from specimens which he sent from Cambridge this present spring.
    Descr. Bulb oblong-cylindrical, about an inch in diameter, with brown membranous outer tunics produced above its neck and many fleshy root fibers. Leaves four to six, contemporary with the flowers, crowded, falcate, lanceolate-acuminate, firm in texture, pale green, channelled down the face, strongly ribbed and furnished with a pale thickened horny border. Peduncle very short, bearing usually one, rarely two clusters of flowers. Spathes ventricose, about two inches long; valves subscariose and pale green at the flowering time. Perianth-tube reaching to the top of the spathe or slightly exserted; outer segments bright yellow, with a spreading obovate blade streaked with black, shorter than the ascending claw; inner segments shorter, pendulous, bright lilac, obovate-unguiculate. Styles above an inch long; crests large, oblique, ovate. Anther about as long as the filament."
    References: Krel. 1892; Grull. 1907; Van T. 1909;

Synonym; caucasica var. bicolor, Rgl.; Kuschakewiczi, B. Fedtsch.; Narbuti, O. Fedtsch. 2n=18 Zakharyeva & Makushenko 1969;

Chromosome counts; 2n=18 Gustafsson & Wendelbo 1975.

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Fosteriana-Taggart sampled.jpgFosteriana Bot Mag 7215.jpgFosterianaFlowerPhotoSite.jpgIris-fosteriana-Tony Hall.jpgirisfosteriana01.jpg

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-- Main.RPries - 2010-01-11
Topic attachments
I Attachment Action Size Date Who Comment
Fosteriana-Taggart_sampled.jpgjpg Fosteriana-Taggart_sampled.jpg manage 277 K 16 Jan 2015 - 15:35 BobPries Peter Taggart photo sampled
Fosteriana_Bot_Mag_7215.jpgjpg Fosteriana_Bot_Mag_7215.jpg manage 89 K 20 Nov 2013 - 19:32 BobPries Biodiversity Heritage Library
Iris-fosteriana-Tony_Hall.jpgjpg Iris-fosteriana-Tony_Hall.jpg manage 202 K 14 Jan 2015 - 19:31 BobPries Peter Taggart photo
irisfosteriana01.jpgjpg irisfosteriana01.jpg manage 61 K 07 Oct 2014 - 03:02 Main.TLaurin Photo by Kirsten
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Topic revision: r10 - 31 Jan 2016, Harloiris
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