Tas. 7661. 
JRIS Detavayt. 
Native of Yunnan. 
Nat. Ord. Intpea.—Tribe Moran. 
Genus Ins, Linn.; (Benth. & Hook. f. Gen. Plant. vol. iii. p. 686 ) 
In1s (Apogon) Delavayi; rhizomate repente elongato, foliis 2-23 ped. longis 
3-3 poll. latis strictis erectis lincaribus acuminatis costatis glauco-viridi- 
bus, pedunculo 3-4 pedale valido erecto fistuloso foliis 1-2 minoribus 
angustioribus instructo superne furcato paucifloro, spathis 23-3 poll. 
longis, foliaceis lanceolatis acuminatis carinatis apicibus scariosis, pedi- 
cellis bracteis subsequilongis, perianthii 2-2} poll. expans. tubo ad 4 
poll. longo, segmentis exterioribus reflexis, limbo oblongo obtuso 
saturate violaceo basin versus albo striolato, ungue limbo wquilongo nudo 
viridi late alato alis violaceis albo-punctatis, interioribus erectis oblongo- 
lanceolatis subacutis, stigmatibus oblongis apice 2-lobis violaceis lobis 
orbicularibus crenulatis, antheris aureis, capsula 2 poll. longa trigona. 
I. Delavayi, Micheli in Rev. Hortic. 1895, p. 399, fig. 128, 129; Jard. du 
Crest, p. 189. 
As pointed out by its author, Mr. Micheli, Iris Delavayi 
is closely allied to J. sibirica, which has a very wide range, 
from Central and Southern Europe to Eastern Siberia and 
Japan. No further evidence of this is necessary than a 
reference to the figure of the latter plant at tab. 50 of this 
work. The differences indicated by Mr. Micheli are, that in 
I. Delavayi the peduncle is longer than the leaves, the 
spathes are foliaceous, not scarious, the flowers are longer 
pedicelled, the tube of the perianth is longer, and the 
capsule larger and triquetrous. Of which characters, 
however, that of the longer pedicels does not hold good. 
It is also very near the Japanese J. levigata, Fisch & Mey. 
(I. Kampferi, Sieb.), to which J. sibirica, var. sanguinea, 
Ker (J. sibirica, var. orientalis, Baker in Journ. Linn. Soc. 
Bot. vol. xvi. (1878) p. 139), tab. 1€04 of this work is re- 
ferable, in which the spathes are herbaceous, and perianth 
tube long. 
I, Delavayi is a native of marshes in the Yunnan pro- 
vince of China. It was introduced into the Jardin des 
Plantes in 1889 by seeds sent by the Abbé Delavay. 
The specimens figured here are of plants raised from 
Jone Ist, 1899. 
* 
