4 
INDIAN 
is represented by 39 species in Burma, by 10 in the East Himalaya ; 
and all those of Malabar, Ceylon and the Malayan Archipelago 
belong to it. Of the Western Himalayan species the most notable 
is I. tinmens Edgew., the dorsal auricle of the wings of which is pro- 
duced into a slender thread descending deep into the spur of the lip. 
1 he same structure appears in a few other in no way related Indian 
species. Its function is no doubt related to fertilization by insects, 
and should be studied in tiie living plant. /. amplexicaulis 
Edgew., is remarkable in its foliage ; /. Edgeworthii Hk, f. is the only 
species of the genus in India with a remarkably protruded basal lobe 
of the wings, /. glauca H. f. & T., is the only Indian species that 
approaches the European /. Nolitangere L., which extends over 
N orth Asia into-China. This it does in habit, in the broad shallow 
crenation of the leaf, in the ionorcsccnce, and in the disposition of 
the bracts. 
Key to the species. 
Series A. — Capsule short, turgid in the middle, contracted at both 
ends. — Of this series there are maiiy species in Sikkim and 
Burma, and all those of Malabar, Ceylon, and the Malay Penin- 
sula belong to it. 
§ I. hi florescence of solitary or fascicled pedicelled flowers in the 
axils of the leaves; pedicels rarely fascicled on a very 
short peduncle^ minutely bracteate at the base . — There are 
many species of this section in all the other Indian regions 
of the genus. 
Leaves alternate lanceolate serrate, 
capsule oblong tomentose . . i. /. Balsamina L. 
Series B. — Capsule elongate, linear or clavate.^ — Of this series there 
are no species in Malabar, Ceylon or the Malay Peninsula, but 
many in the Eastern Himalaya and Burma. 
I. Pedicels bracteate at the base only ; (never on the pedicel 
above the base) or ebracteate. 
§ 2. Inflof'escence of many long-peduncled erect subcorymbosely 
disposed racemes from the axils of the upper often 
crowded leaves^ usually many-flowered ; pedicels often 
panicled or whorled ; flowers large or medium^sized,— 
In small specimens the inflorescence is reduced to a 
single peduncled few-flowered raceme. After flowering 
tlie rachis of the raceme often elongates between the 
flowers. 
