tube, This stouter form has been distinguished by Mr. 
Wright as a variety, var. major, of I. Wilsonii, but the 
venation of the leaves is somewhat different, and it may be 
necessary, when more ample material is available, to treat 
this robust plant as a distinct species. As gathered in a 
wild state and also under cultivation all the specimens of 
Mr. Wilson’s two plants have pale yellow flowers. But it 
has to be remarked that in 1906 Mr. G. Forrest collected, 
on the eastern flank of the Tali range in Western Yunnan, 
an Iris with bright purplish-blue flowers as in J. sibirica, 
but which only differs from /, Wilsonii in other respects in 
having more finely acute leaves and wider perhaps less 
herbaceous spathes. This blue form is met with in moun- 
tain pastures at 10,000 feet above sea-level. 
Descriprion.—J/erb, rhizome short, its apex crowned 
with the fibrous remains of the leaf-sheaths. Leaves at the 
base 1-2 feet long, 3-4 lin. wide, the tip short, slightly 
obliquely incurved, bright green, smooth, unequally veined 
at least in the lower portion, 3-4 of the nerves towards the 
centre more prominent than the others. Stem 8-12 in. high, 
2- or 1-flowered, cylindric, 1-foliate, the leaf about 6 in. 
long and arising below the middle, like the basal leaves 
except as regards its size. Spathes somewhat herbaceous, 
one usually produced in a short blade, 24-4 in. long, 1-2 
lin, wide. Pedicels unequal, the longer reaching 5 in. in 
length. Perianth-tube green, 4-5 lin. long, bluntly 3- 
gonous ; outer serments nearly 2 in. long, with a reflexed, 
oblong- or obovate-elliptic limb 8-10 lin. long, veined with 
purple below the middle, claw somewhat shorter than the 
imb, 3-5 lin. wide, copiously veined with purple towards 
the edge; inner segments oblong-lanceolate, narrowed to a 
slender claw, $-1} in. long, 3-4 lin. wide, yellow. Jila- 
ments 5-6 lin. long ; anthers whitish, rather longer than the 
filaments. Ovary bluntly 3-cornered, in flower 8-9 lin. long ; 
Kile subspathulate-linear, 3-4 lin. wide above, yellow, 
= . the crest wide ovate, erosely toothed ; stigma wide 
tach ar. Capsule triquetrous, oblong, slightly narrowed 
to both ends, 14-12 in. long. Seeds oblique, triquetrous- 
ovoid, truncate at the tip, dark-tawny, 2-24 lin. long. 
Figs. 1 and 2, ant 
except 4, enlaryed,’ 1th; 8, a lobe of the stigma; 4, fruit; 5, seeds :—all, 
