152 THE BOOK OF THE IRIS 



the same. The flowers are fragrant and are produced 

 in June as in the case of /. plicata. 



VI. Chrysantha. 



109. I. chrysantha, Baker in Bot. Mag., 1901, t. 

 7784. This very fine Iris, while distinctly belonging to 

 the Pogoniris section, is unlike all its associates in 

 having long, narrow leaves and a long stem, with a 

 single cluster of flowers. It is so distinct that I have no 

 hesitation in establishing a sub-section for its reception. 

 The rhizome is quite shortly creeping and small. The 

 leaves are linear, a foot long, firm in texture and glau- 

 cescent, with pale margin. The stem is slender and 

 about as long as the leaves ; spathe-valves lanceolate- 

 acuminate, 4 inches long, pale green, papery. The 

 perianth-tube is cylindrical, nearly an inch long ; the 

 falls oblong, emarginate, 3 in. long, reflexing from near 

 the base and provided in the lower half with a bright 

 yellow beard ; standards erect, obovate-cuneate, as long 

 as the falls and rather broader, very shortly if at all un- 

 guiculate ; ovary distinctly stipitate, clavate, narrowed 

 gradually to both ends, not distinctly ribbed ; style arms 

 convex, an inch broad ; crests large, quadrate, entire. 

 Is probably a native of Persia. Cultivation, so far as 

 known, may be that of the section Oncocyclus. 



The only plant known in cultivation was accidentally 

 introduced to the Cambridge Botanic Garden with 

 species of Oncocyclus, contributed by Mr C. G. Van 

 Tubergen, Junr., and from it the figure in the Botanical 

 Magazine was prepared. So much of the plant was sent 

 for this purpose that the portion left behind died, and 

 the plant is not now in cultivation, but it is hoped that 

 it may be received again. It was planted with the 

 Oncocycli and grew well under treatment with them. 



