24. SIR J. D. HOOKER ON THE SPECIES OF 
flower of some species, and the absence of fruit of others. 
Taking all sources of difficulty into aecount, the following 
summary of their effects is, T hope, approximately correct :— 
Cases of two or more species occurring under one number: 
5 species in 1 case; 4 species in 1 case; 3 species in 
2 cases ; 2 species in 10 cases. 
Cases of single species occurring under two or more numbers : 
1 species under 7 numbers; 2 under 3 numbers; 10 under 
2 numbers. 
ENUMERATION OF SPECIES, WITH OBSERVATIONS, 
No. 4729. “ IMPATIENS LONGICORNU, Wall. Napalia 1821.” 
One sheet with three species. 
On the right T. bicornuta, Wall. See also 4730, 4765. 
On the left T. bicolor, Royle * (I. umbrosa, Edgew.). 
In the middle 7. sulcata, Wall. (I. gigantea, Hdgew.). See 
also 4761. 
No. 4730. “ IuPATIENS racemosa, DC. Napalia 1821." "Three 
sheets with five species. 
Sheet 1. On the left I. tingens, Edgew. t On the right 
I. bicornuta, Wall. See also 4729, 4765. 
Sheet 2. On the upper right hand Z. bicornuta, Wall. On 
the left 7. racemosa, DC. 
On the lower right hand J. racemosa, DC. On the lower 
left I. odorata, D. Don. 
Sheet 3. * No. 4730 B. Sillet, W. G.” T. Balsamina, L., 
with double flowers. See also 4731, 4770. 
No. 4731. *IwPaArrENS BarsAMINA, Linn. H.R.C." With 
double flowers. See also 4730 B, 4770. 
* The name J. bicolor, Royle, placed in the ‘Flora of British India as 
a synonym under Z. umbrosa, Edgew., must I think be retained, though the 
description and plate in the ‘ Botany of the Himalaya’ do not suffice to 
distinguish it from several others. It is the commonest species in the Western 
Himalaya. 
T This being the dominant specimen of those ticketed Z. racemosa, DC., by 
Wallich, I took it for that plant and reduced Z. tingens to a synonym in the 
‘Flora of British India. From information kindly supplied by M. Casimir 
de Candolle, I find that I erred in doing so. 
