The Juno Section 
199 
Diagnosis. 
I. Willmot liana Juno; /. caucasicae haud dissimilis sed folia latiora, planiora, segmenta exteriora 
saturate maculata et venosa. 
Description. 
Rootstock , a stout globose bulb of the usual Juno type. 
Leaves , about eight in number, with a white horny edge, broad, not acutely channelled, some- 
what falcate, of a deep green with a glossy surface. 
Stem, 6 to 8 in. high, bearing usually 4 to 6 flowers but sometimes as many as 9, sessile in 
the axils of the leaves. 
Spat he valves, narrow, not inflated, green, 1^ — 2 in. long. 
Pedicel, very short. 
Ovary, trigonal. 
Tube, 2 in. long, triangular in section, becoming broader in the upper part. 
Falls. The slightly winged haft contracts gradually into the oblong blade. The colour on the 
haft is of a pale reddish shade of purple veined with blue-violet on white along the centre. The 
blade is of some shade of blue with a patch of white marked with blotches and veins of a deeper 
shade. The colour varies considerably and may be a deep lavender, blue-purple, turquoise blue or 
even wholly white. 
Standards, small, depressed, ending in a pointed tooth, flanked by two rounded projections. 
Styles, keeled, narrower than the haft, the wings of which, however, do not curl round the 
styles as in I. persica. 
Crests , small, triangular or subquadrate, erect. 
Stigma, entire, oblong, conspicuous. 
Filaments, whitish, sometimes tinged with mauve. 
Anthers, cream. 
Pollen, cream. 
Capsule, trigonal, oblong, with thin papery walls. 
Seeds, spherical, brown, wrinkled. 
Observations. 
This very distinct Iris is obviously closely allied to /. caucasica. It differs from that species 
in the broader, less acutely channelled leaves, of a darker green, in the less developed lateral 
expansions on the haft of the falls, in the narrow uninflated spathes. The colour, too, is wholly 
different and the blotched markings on the white patch on the blade of the fall are quite characteristic. 
My experience of its cultivation has been that it makes fewer offsets and grows less vigorously 
than the other tall Junos. This may be due to the fact that it is very floriferous and that the 
energies of the plant are therefore exhausted in producing the flowers. But, on the other hand, 
seedlings also grow very slowly. Possibly it needs a heavy soil, and I incline to think from its 
appearance in other gardens that its lack of vigour here may be due to the extremely sandy 
character of the soil. 
t /, CAUCASICA 
Hoffmann, Descr. Plant. Iber. 1806, in Comm. Soc. Phys. Mosc. I. p. 40 (1808). 
Bieberstein, FI. Taur. Cauc. I. p. 33 (1808). 
Maximowicz, Act. Hort. Petr. VI. p. 497 (1870). 
Bull. Acad. P<*tr. xxvi. p. 505 (1880). 
M61. Biol. x. p. 688 (1880). 
Boiss. FI. Or. v. 121 (1884). 
•Foster, Bulbous Irises, pp. 35 and 77 (1892). 
Baker, Hdk. Irid. p. 45 (1892). 
•Sweet, Brit. FI. Garden, vol. III. t. 255 (1828). 
•Regel, Gartenflora, t 800 (1874). 
Synonyms. 
Thelysia caucasica, Pari. FI. It. III. p- 3*7 ( 1 858). 
Costia caucasica, Willk. in BZ. XVIII. p. 132 (i860). 
Neubeckia caucasica, Alef. in BZ. XXI. p. 297 (1863). 
Coresantha caucasica, Klatt in Linnaea XXXIV. p. 575 (1866). 
Xiphion caucasicutn, Baker, in Journ. Bot. IX. p. 109 (1871). 
in Gard. Chron. 1876, I. p. 692. 
in J. L. S. XVI. p. 124 (1877). 
Juno caucasica, Klatt in BZ. XXX. p. 49« (1872). 
