The Pogoniris Section 
137 
I. The Jiavissima group. 
I. Jiavissima and /. Bloudowti (with the possible addition of the imperfectly known I. mandshurica) 
form a small group of yellow-flowered Irises, which may be looked upon as the connecting link between 
the Pogoniris and Regelia Sections. They have hitherto been included among the Pogoniris 1 , but they 
undoubtedly possess certain characteristics which show affinity to the Regelia species. These are the 
stoloniferous character of the rhizome, the small creamy white aril on the seeds, the capsule tapering at 
either end and dehiscing below the apex, which remains undivided, and the curious way in which the 
withering flower twists up spirally (cf. Fig. 15, p. 138). 
+ 1 /. FLAVISSIMA 
Pallas, Iter III. p. 715 0773 )- 
[Pallas there refers to *Gmelin, FI. sib. I. p. 31, t. v. fig. 2 (1747).] 
Jacq. Collect. IV. p. 98 (1790). 
•Ic. Plant. Rar. II. t. 220 (1786-93). 
•Tratt. Auswahl, no. 86 (1821). 
Bess. Enum. Phan. Volh. p. 40 (1822). 
Ledeb. FI. Alt. IV. p. 332 (1833). 
Baker in Gard. Chron. 1876, II. p. 710. 
in J. L. S. XVI. p. 144 (1877). 
Hdk. Irid. p. 29 (1892). 
Maxim, in B. A. P. XXVI. p. 530 (1880). 
Synonyms. 
/. arenaria , *Waldst. und Kit. PI. Rar. Hung. I. p. 57, t. 57 (1802). 
•Red. Lil. t. 296 (1809). 
•Lindley in Bot. Reg. t. 549 (1821). 
•G£el, Sert. Bot. vol. I. (1830). 
•Reichb. leones, t. CCCXXX. fig. 757 (1847). 
Baker in Gard. Chron. 1876, II. p. 710. 
in J. L. S. xvi. p. 144 (1877). 
Hdk. Irid. p. 29 (1892). 
Maxim, in B. A. P. XXVI. p. 530 (1880). 
Nyman, Consp. p. 701 (1882). 
I. dahurica , Herbert ex Klatt in B. Z. XXX. p. 514 (1872). 
I. nova, Ind. Hort Bot. Pest. (1788). 
DISTRIBUTION. Moravia, Hungary and North-Eastern Asia, from the Altai district to Mongolia. 
Moravia. Nikolsburg, 1858, Makowsky (V). 
Hungary. No locality, 18 — , Kitaibel (V) (BM). 
Pesth, 1815, Kitaibel (B). 
18—, Kovits (V). 
18 — , Richter (V). 
18 — , Schifler (E). 
1830, Martins (E). 
1876, Pornten (E). 
18 — , Gyorgy (BM). 
Stadtwaldchen, 18 — . Perthini (K). 
18 — , Lang (B). 
Isl. Csepel, 1870, Tauscher (K). 
1871, Tauscher (V). 
1872, Tauscher (B). 
Rakos, 1878, Lajos (V). 
1838. Lang (K). 
Gran, 1866, Hb. Pittoni (V). 
Nagy-Koros, 1895, Hollos (B). 
Dubova, 1870, Janka (B). . . 
Asia. [N.B. It is extremely difficult to separate herbarium specimens of I. Jiavissima from others 
of I. Bloudowii (see also p. 139). The latter would appear to have a stouter and more 
compact rhizome. The spathes too are broader, more navicular and more conspicuously 
veined, the short transverse veins between the main longitudinal lines being especially 
noticeable.] 
Dahuria, "I. lutea biflorae affinis," 17—, Pallas (BM). 
Lake Baikal, "/. pumila," 17—, Pallas (BM). 
Jenisseisk; Steppes, 1873 (BM). 
Irkutsk, 18—, Hb. Besser (K). 
N. Mongolia; Changai, 1877, Potanin (K). 
1 Except by Spach, who formed a separate section Psammiris (=Sand Iris) for /. arenaria (a synonym of I. Jiavissima) * 
