Iris humilis Georgi (1775: 196)

Alexeeva, Nina B., 2018, A taxonomic revision of Iris section Psammiris (Iridaceae) in Russia, Phytotaxa 340 (3), pp. 201-216 : 207

3. Iris humilis Georgi (1775: 196) .

Lectotype (designated by Alexeeva & Mironova 2007: 924):— RUSSIA. Iris pumila , ad Baikal, 1772 (MW 0021793 [digital image!], herb. Trinius) ( Fig. 5 , fragments numbered 1 & 2); isolectotype: BM 000832585!

= I. flavissima Pallas (1776: 715) .

Lectotype (designated by Alexeeva & Mironova 2007: 217):— RUSSIA. Siberia : Iris lutea biflorae affinis Dahuria (BM 000832584!).

= I. arenaria Waldstein & Kitaibel (1802: 57 , tab. 57).

Lectotype (designated here):— HUNGARY. Carpathians : [icon in] Waldstein & Kitaibel (1802, tab. 57).

= I. pineticola Klokov (1950: 407) .

Holotype:—UKRANIA. Kharkov, Horoshevo: RSS Ucr., dit. Charcoviensis, in pineto prope pag. Choroshevo, 5–6 May 1855, B.M. Czernjajev (KW).

Description: — Rhizome short and form loose clumps. Leaves 25 × 0.3–0.7 cm, dove-green and ensiform. Flower scape 15 cm height and surrounded by brown fibrous remnants of many old leaves. Bracts membranous. Flowers pale yellow, with purple-veined patterns on the falls, giving a blush to the flowers. Perianth tube short, more or less equal to the ovary. Capsule elliptic, tapering at both ends, with a beak; seeds 3.8 × 2.5 mm, light brown.

Phenology: —Flowering in May, fruiting in late June.

Distribution: —It is widely distributed both in Russia and abroad. In Russia, it occurs in East and West Siberia. It is also found in the southern European Russia. Its range also extends into Central Europe: Austria, Czech Republic, Hungary, Romania; Middle and Central Asia: Kazakhstan, Kyrgyzstan, China and Mongolia.

Habit and ecology: — Iris humilis grows on the steppe (mainly sandy), often rocky slopes, in forest glades and coastal meadows, among shrubs.

Figures

FIGURE 5. Lectotype of Iris humilis from Trinius’s collection (MW 0021793, fragments numbered 1 & 2).