206 
The Juno Section 
the haft. The outer edge is of a grey blue, which gives way to green as it fades into the central 
yellow patch that surrounds the end of the crest. 
Standards, | — i in. long, with canaliculate haft, and a narrow, pointed lanceolate blade, drooping 
until they touch the tube. 
Styles , about in. long, keeled, with a dark blue stripe running along the centre; the rest of 
the surface is a pale bluish white. 
Crests, subquadrate, f in. long, slightly veined with blue. 
Stigma, a prominent oblong, the upper edge obscurely bilobed. 
Filaments , colourless, short. 
Anthers, creamy, longer than the filaments. 
Pollen, cream. 
Capsule, not seen, for the plant has always hitherto proved sterile. 
Seeds, 
Observations. 
There is no real proof that the identification of the plant, that has been in cultivation as a 
variety of I. orchioides for some years, with /. coeru/ca is correct but, as both the description and the 
herbarium specimens correspond and as Mme Olga Fedtschenko identifies them in her paper on the 
Turkestan Irises in the Journal Russe de Botanique for 1909 1 , I have ventured to do so too. 
The plant is obviously distinct from /. orchioides, of which it might, however, be a hybrid. The 
most obvious difference lies in the distinct smooth white horny edge to the leaf. In /. orchioides this 
edge is much less distinct and replaced by a number of fine colourless points or setae, which do not 
occur on /. coerulca. The less obvious difference is that plants growing under the same conditions as 
/. orchioides and its varieties have never yet set any seed, although artificially pollinated and although 
the others seed every year. 
It is possible that there exist other forms of a different colour to that described. In April, 1911, 
I found one in flower in Foster's garden at Shelford, in which the yellow blotch round the end of 
the ridge on the blade of the falls was entirely absent, and which bore flowers of a lavender blue. 
There was no means of knowing the history of this plant, and it is possibly a hybrid raised by Foster 
that has grown to flowering size since his death. There is no mention of any such form among 
his notes. 
t XI. Rosen da chi a na a 
Regel in *Act. Hort. Petr. vm. p. 675, L 8 (1884). 
•Gartenflora XXXV. pp. 409, 617, t. 1227 (1886). 
Foster in Gard. Chron. 1887, I. p. 390. 
1889, I. p. 350. 
•1890, I. p. 577. 
•Bulbous Irises, pp. 41 and 81, figs. 25 and 55 (1892). 
Baker in Bot. Mag. t 7135 (1890). 
Hdk. Irid. p. 46 (1892). 
Synonym. 
var. baldshuanica. 
I. baldshuanica, Fedtsch. in Journ. Russ. Bot. 1909, p. 77. 
[This is a smaller plant than the type and flowers a fortnight or a month later. The flowers 
are sometimes of a pale primrose yellow more or less veined and blotched with brown-purple. 
Other colour varieties are also known. The exact relation of this plant to the type is not 
yet determined. See Observations.] 
Distribution. Turkestan. 
Darwas; Tavildara (? Tschildara), 1883, Nikiforow (K) (BM) (V) (B). 
Sagredascht, 1883, Regel (B). 
Baldschuan; Kalaschoduha, 1883, Regel (£). 
Diagnosis. 
I. Rosenbachiana Juno; acaulis ; segmenta exteriora oblonga, lamina parva ungue nonnunquam 
angustiore ; semitia strophiola albida conspicua. 
Description. 
Rootstock, a bulb, with short fleshy roots. 
Leaves , deep green, with a glossy upper surface, ribbed and somewhat glaucous beneath, deeply 
channelled and somewhat bluntly pointed, 3 — 6 to a tuft, 1 — 2 in. long at flowering time, eventually 
9 in. long by 2 broad. 
Stem , very short, bearing 1 — 3 flowers, in the axils of the leaves. 
1 The value of this identification is somewhat discounted by the fact that Mme Fedtschenko includes among the synonymy 
"and probably I. WillmotHana," which belongs to quite a distinct group. 
* Named after the prefect of Turkestan at the time of its discovery. 
