HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 
3 
SPECIES, 
HABITAT. 
COLLECTOR AND DATE. 
*R. Johnstoneanum, Watt 
*R. lasiopodum, Hutchinson . 
rine eee 
Lindley 
Ludwigianum, Hosseus . 
. Lyi, Léveillé 3 
Maddeni, "Hook: aa 
manipurense, Balf. f. et 
a 
megacalyx, Balf. f. et 
War 
missionavum, Léveillé 
phen Booth 
chypodum, Balf. f. et 
be ye 
es 
=e) 
; paleaue! peated nson . 
R. polyandrum, Hutchinson 
é ig hens gol ed Hetchan: 
* 
rhabdotum, Balfz:t: et. 
diesinhe m, Hutchins 
-rufosquamosum, Hutchih. 
; sb ctelassin Hutchinson 
. Smilesiit, Hutchinson 
. Surasianum, Balf, f. et 
Craib 
. Valentinianum, G. Forrest 
. Veittchianum, Hook, f. 
. supranubium, Hutchinson | W 
Manipur, Assam (6000— 
7500 
W. Yunnan (8000—g000 
Kweichow (alt. ?). 
Sikkim, Bhutan, and 
Manipur (6000— 10,000 
Siam (6600 1%); 
K 
ipur, gO “(8000— 
10,000 ft.). 
N.E. Burma (7000-8000 
ft. 
WwW, Yunnan (g000 ft.). 
Bhutan pte atid it:): 
W. Yunnan (9000—10,000 
t.). 
S.E. Yunnan Sore $b.) 
ee (8500 ft.). 
Szec 
Bhutan (8000 ft.). 
W. Yunnan (9000 ft.). 
S. Yunnan (4800 ft.). 
W. Yunnan (6000-8000 
(10,000— 
I it.). 
N. Siam (4500 ft.). 
W. Yunnan (11,000 ft.). 
Central = Lower Burma 
am (5000-7000 
G. Watt (1882). 
G. Forrest (1913). 
J. Cavalerie (1902). 
J. D. Hooker ? (1848). 
C. C. Hosseus (1905). 
F Sees (1912). 
J. D. Hooker (1848). 
G. Watt (1882), 
Kingdon Ward (1914). 
E. E. Maire (1911). 
T. J. Booth (1850 ?). 
G. Forrest (1913). 
A. Henry (1896-8). 
R. E. Cooper (1914). 
Coll. ? 
E. Cooper (1915). 
Forrest (r913). 
Henry (1896-8). 
Forrest (1912). 
H. Smiles (1893). 
Forrest (1906). 
F, G. Kerr (1914). 
Forrest 2 ida 
Lobb (1856), 
a 
GROUPING OF THE SPECIES. 
The thirty-nine species fall into three fairly natural groups 
as follows :— 
Subseries I.—Eumaddenia, w 
with numerous (15-2 5) stamens, 
numerous (10-12) ovary cells, a fairly large calyx, medium- 
ed leaves very densely covered with ferruginous scales, and 
siz 
with the petiole grooved on the upper surface. 
According to 
the prevailing views on the phylogeny of Gamopetalae in general 
this should, I think, be regarded as the more ancient group of 
this particular series. 
Its headquarters seems to be in Bhutan, 
where there are four species represented, and there is one species 
in Sikkim, one in Manipur, and one common to North-East 
ie and Western Yunnan. 
* Described for the first time in the present paper, 
