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■ (Spec) Iris ventricosa Pall.

1773, botanical author Peter(Pyotr) Simon von Pallas

Iris ventricosa Pall.; ( Peter Pallas, 1773, found near River Argun, Asia) Subgenus Limniris, Series Tenuifoliae. Description with image in Reise 3: 712 Table B fig.1. 1773. Synonym inflated Iris, name after the inflated bract below the flower.

Images on Irises of Russia website

See below:
A35FAC7A-832D-4FC7-9F49-E8EC2CF75495.jpgIris-ventricosa-3.jpgIris-ventricosa-4.jpgIris-ventricosa-5.jpgIris-ventricosa-6.jpgIris-ventricosa-7.jpgIris-ventricosa-8.jpgTenuifoliaIn PallasVoyages.jpg


Reise 3: 712 Table B fig.1. 1773
Dyke in The Genus Iris;
Description, taken from Pallas' specimens.
Rootstock ,
Leaves , linear, under ¼ in. broad, 12 in. long, ribbed like those of I. ensata, thick.
Stem , about 6 in. long, bearing two reduced leaves, which closely clasp the stem.
Spathes , shorter and broader than in most specimens of I. Bungei: the valves covered with a network of fine transverse fibres between the longitudinal ribs (see Fig. 3).
Pedicel , short.
Tube , 1 in. or a little more in length.
Falls . The narrow obovate blade is only ¼ or ¼ as long as the slightly panduriform haft.
Standards , lanceolate.
Styles , narrow.
Crests , long, narrow, oblong.


This Iris is apparently as rare in herbarium collections as it seems to be in nature. It is at once recognisable by the curiously netted spathe valves (see Fig. 3, p. 34). It is unknown in cultivation.
Flora Of China
Iris tenuifolia Pallas, Reise Russ. Reich. 3: 714. 1776.
细叶鸢尾 xi ye yuan wei
Rhizomes dark brown, knobbly, woody. Roots tough. Leaves grayish green, linear, twisted, 20--60 cm × 1.5--2 mm, midvein absent, base surrounded by reddish brown, persistent sheaths. Flowering stems not emerging above ground; spathes 3 or 4, lanceolate, 5--10 cm × 8--10 mm, 2- or 3-flowered, apex long acuminate. Flowers pale violet, 4--7 cm in diam.; pedicel slender, 3--4 mm. Perianth tube filiform, 4.5--8 cm; outer segments white tinged yellow at center, veined darker, violet at margin, spatulate, 4.5--6 × ca. 1.5 cm, papillose along midvein; inner segments erect, oblanceolate, ca. 5 cm × 5--9 mm. Stamens ca. 3 cm. Ovary cylindric, 7--12 × ca. 2 mm. Style branches ca. 4 cm × 4--5 mm. Capsule ovoid, 3.2--4.5 × 1.2--1.8 cm, apex shortly beaked. Fl. Apr--May, fr. Aug--Sep. 2 n = 14*.

Grassy slopes, fixed dunes, sandy and gravelly soil; 1300--3700 m. Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Xinjiang, Xizang [Afghanistan, Kazakhstan, Mongolia, Pakistan, Russia].

Chromosome counts

2n=28 Probatova. 2006. Chromosome numbers of plants of the Primorsky Territory, the Amur River basin and Magadan region. Bot. Žhurn. (Moscow & Leningrad) 91(3): 491–509. ----


Inflated Iris Xyridion ventricosum (Pall.) Klatt, Bot. Zeitung (Berlin) 30: 500 (1872). Sclerosiphon ventricosum (Pall.) Rodion., Bot. Zhurn. (Moscow & Leningrad) 91: 1897 (2006). Cryptobasis ventricosa (Pall.) M.B.Crespo, Mart.-Azorín & Mavrodiev, Phytotaxa 232: 61 (2015). ----


none known ----


none recorded ----

Distribution and Cultivation

S. Siberia to N. China


Distribution and Cultivation

Distribution: Region: S. Siberia to N. China


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-- Main.RPries - 2011-03-07
I Attachment Action Size Date Who Comment
A35FAC7A-832D-4FC7-9F49-E8EC2CF75495.jpgjpg A35FAC7A-832D-4FC7-9F49-E8EC2CF75495.jpg manage 63 K 18 Jul 2016 - 15:19 BobPries Flora of China
Iris-ventricosa-3.jpgjpg Iris-ventricosa-3.jpg manage 77 K 18 Jul 2016 - 14:52 BobPries Ken Walker photo
Iris-ventricosa-4.jpgjpg Iris-ventricosa-4.jpg manage 188 K 18 Jul 2016 - 14:39 BobPries Ken Walker photo
Iris-ventricosa-5.jpgjpg Iris-ventricosa-5.jpg manage 177 K 18 Jul 2016 - 14:32 BobPries Ken Walker photo
Iris-ventricosa-6.jpgjpg Iris-ventricosa-6.jpg manage 124 K 18 Jul 2016 - 14:53 BobPries Ken Walker photo
Iris-ventricosa-7.jpgjpg Iris-ventricosa-7.jpg manage 109 K 18 Jul 2016 - 14:53 BobPries Ken Walker photo
Iris-ventricosa-8.jpgjpg Iris-ventricosa-8.jpg manage 106 K 18 Jul 2016 - 14:54 BobPries Ken Walker photo
TenuifoliaIn_PallasVoyages.jpgjpg TenuifoliaIn_PallasVoyages.jpg manage 308 K 21 Jun 2016 - 12:48 BobPries Courtesy of the Biodiversity Heritage Library
Topic revision: r7 - 22 Nov 2016, BobPries
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