212 DR, M. T. MASTERS ON A NEW SPECIES OF 
Abies Hookeriana, Murray, Ed. N. Phil. Journal, April 1855 (cone), 
and Syn. of various Conifers, 1863 (leaf) ; Pinetum Britannicum, pt. iv. 
figs. 9, 12, & 13. 
Abies Pattonii, Gordon, Pinetum, 1858. 
Abies Williamsonii, Newberry, 1857 (non hort. ). 
Tsuga Pattoniana, Engelmann. 
Pinus ($Tsuga) Hookeriana, M*Nab, Proc. R. I. Acad. 1875. 
2. Tsuga Pattoniana,—Abies Patton, Jeffrey MSS. 1851. From Mount- 
Baker. 
Abies Pattoniana, 4. Murray, 1863 (leaf). 
Pinus (§Tsuga) Pattoniana, M*Nab, Proc. R. I. Acad. 1875, leaf (non 
Parlatore). 
Abies Parryana, Hort. Edin. (leaf). 
Abies Hanburyana, Hort. Edin. (leaf). 
It is greatly to be desired that cones of the Mount-Baker tree 
be obtained, as our knowledge of Tsuga Pattoniana from the leaf 
only is very unsatisfactory ; and we trust that American botanists 
may soon find cones which will answer to Jeffrey's description. 
On a new Species of Gossypium from East Tropical Africa. 
By Dr. MaxwzEuL T. MasrEYs, F.R.S., F.L.S. 
[Read December 15, 1881.] 
Tue discovery of any species of Cotton in a truly wild condition 
is a matter of very considerable interest historically, and in rela- 
tion to the probable origin of the very numerous cultivated 
varieties *. 
Excluding plants which have probably escaped from culti- 
vation, or which have descended from cultivated species, we now 
know with greater or less probability of the existence of wild 
species of Gossypium in Asia, Africa, Oceania, and Australia, 
thus :—In Sindh, G. Stocksii, Mast., occurs, which is probably the 
prototype of the cultivated Indian varieties referred to G. herba- 
ceum. In Oceania two species are considered wild— G. sandvi- 
cense, Parl., and G. taitense, Parl. In Australia the very distinct 
G. Sturtii occurs, which, however, perhaps is not a true Gossypium. 
In tropical Africa, e.g. in Nubia, Angola, and Benguela, G. ano- 
* Fora résumé of what was known on this subject up to the date of publica- 
tion, see Alphonse de Candolle, * Géographie Botanique; t. ii. p. 973. 
