The Regelia Section 
127 
Distribution. Bokhara. 
Darwas; near R. Pandsch, 1883, A. Regel (K) (BM) (B) (V). 
Baldshuan, 1883, A. Regel (B) 1 . 
Tian Pass, 1906, Roshewitz (B). 
No locality (Turkestan), 1889, Grombizewski (K). 
Diagnosis. 
/. darwasica Regelia ; /. Korolkowi et /. stoloniferae affinis sed rhizonia compactum, segmenta omnia 
acuminata, interiora plerumque barbata. 
Description. 
Rootstock, a somewhat slender rhizome, resembling that of /. Korolkozui. 
Leaves, linear, very glaucous, of a somewhat dark bluish green, about 12 — 15 in. long by £ in. wide, 
often flushed with purple at the base. 
Stem, about 1 2 in. long, bearing 2 — 3 flowers and a narrow clasping leaf. 
Spathe valves, 3 — 3^ in. long, quite green or slightly flushed with purple, sharply keeled, very pointed, 
reaching above the top of the tube. 
Pedicel , short, ^ in. 
Ovary, about 1 in. long, sharply trigonal, with slightly concave sides. 
Tube, slightly over 1 in. long, rounded trigonal, green with faint purple stripes in the line of the 
standards. 
Falls. The blade is linear lanceolate or oblong with a pointed extremity, the haft being cuneate, 
widening gradually to the blade. The groundwork is of a greenish brown colour, with conspicuous veins 
of brownish red or purple. The beard is of whitish hairs tipped with blue. 2^ in. long by £ in. wide. 
Standards. The pointed oblong blade narrows gradually to a canaliculate haft, which usually bears 
a line of hairs. This beard is, however, not always present, not even in all the standards of the same 
flower. The colouring is similar to that of the falls. 
Styles, light yellowish green, faintly flushed with brown purple at the edges. 
Crests, small, triangular. 
Stigma, entire or very obscurely bilobed. 
Filaments, short. 
Anthers, much longer than the filaments, often more than twice as long. 
Pollen, bluish. 
Capsule, an ellipse pointed at either end and dehiscing below the top as in /. Korolkowi. 
Seeds, globose or pyriform with conspicuous pale aril as in all Regelia Irises. 
Observations. 
This Iris is closely allied to I. Korolkowi and to /. stolonifera, but it is easily distinguished from 
them, at least in the living state, by the narrow, conspicuously pointed segments of the flowers. In the 
dry state, as herbarium specimens, it is almost impossible to separate these species unless a flower 
has been dissected and the segments fully displayed. 
My supposition that /. Suwarowi is really synonymous with /. darwasica is confirmed by a note of 
Mme Fedtschenko in Journ. Russ. Bot. 1909, no. 5, p. 76, n. 1, to the effect that in the Herbarium 
of the St Petersburg Botanic Garden there is a specimen called /. Suwarowi by Regel from the locality 
from which he obtained his original specimen of I. darwasica (East Bokhara ; Mt Ala-Kisrak in the 
Kulab district). 
The cultivation of this Iris is the same as that of the other members of the section (see p. 123). 
I. FA LC I FOLIA 
(Fig. 14, p. 128) 
Bunge, PI. Lehm. in M6m. Sav. Etr. Pdtersb. VII. p. 505 (1847). 
Baker in Gard. Chron. 1876, I. p. 788. 
in J. L. S. XVI. p. 147 (1877). 
Hdk. Irid. p. 30 (1892). 
Maxim, in B. A. P. xxvi. p. 506 (1880). 
Boiss. FI. Or. V. p. 133 (1884). 
Synonyms. 
/. filifolia, Bunge, l.c. p. 506, non Boissier. 
[N.B. Specimens determined by Bunge from Lehmann's collection (K) (B) show that l. filifolia is 
only a small form of I. falcifolia .] 
1 These specimens were distributed from St Petersburg with the determination stolonifera var. stolonibus nullis." They 
are, however, most probably /. danvasica, for the rhizome of this species is more compact than that of /- stolonifera, as Regel 
himself acknowledged, when he pointed out that I. Suwarowi differed from I. stolonifera “rhizomate estolonifero, Act. HorL 
Pet. ix. p. 619 (1884). 
