HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 13 
us by a good road to Langhep, a stone resting-house (10,475 ft.) 
on a very narrow flat. I had abundance of occupation in 
gathering rhododendron seeds, of which I procured twenty-four 
kinds on this and the following day. These occurred in the 
following order in ascending, commencing at 6000 feet.—1, R. 
Dathousiae ; 2, R. vaccinioides ; 3, R. camelliaeflorum ; 4, R. ar- 
boreum. Above 8000 feet.—5, R. argenteum ; 6, R. Falconeri ; 
7, R. barbatum,; 8, R. Campbelliae; 9, R. Edgeworthii ; to, 
R. niveum; 11, R. Thomsoni ; 12, R. cinnabarinum; 13, R. 
glaucum. Above 10,500 feet.—14, R. lanatum ; 15, R. virgatum ; 
16, R. campylocarpum ; 17, R. ciliatum; 18, R. Hodgsoni ; 
19, R. campanulatum. Above 12,000 feet.—20, R. lepidotum ; 
21, R. fulgens ; 22, R. Wighttanum ; 23, R. anthopogon; 24, 
R. setosum. 
We may assume that all the earlier cultivated plants of 
R. Dalhousiae in this country were grown from seeds collected 
by Hooker on the Choongtam Mountain at 5000-6000 ft., and on 
his ascent to the Chola Pass between 6000 and 8000 ft. 
Regarding the epiphytic habit of some species, Hooker says 
(Journ. Hort. Soc. Lond. vii. 72 (1852): “Much undue im- 
rtance has been given to the fact of some kinds growing 
habitually epiphytically (R. Dalhousiae,- R. camelliaeflorum, 
R. pendulum), and it has been supposed that much difficulty 
must attend their cultivation. Having occasionally seen all 
these species growing on rocks, and the two latter sometimes 
becoming erect, and that always in exposed but very moist 
localities, I have been induced to attribute their predilection 
for the branches of trees to their weak habit and want of light 
elsewhere. Being plants of the forest region, and unable to 
contend against the vigorous undergrowth that prevails there, 
the offspring of such seeds as fall to the ground are choked, 
whilst the perennially humid atmosphere supports such as 
sprout on the mossy limbs of trees, where they receive the 
stimulus of light. R. Dalhousiae, for instance, which is never 
found on the ground in the woods of Darjiling, grows in thou- 
sands on the clay and mould banks of the roads which are cut 
through the forest, the young plants coming up in profusion 
as soon as the cuttings are made: these, however, seldom attain 
any size, from the too great exposure of the soil, which in the 
dry season rapidly parches during a short day’s heat. In Dr 
Campbell’s garden at Darjiling there is a perpendicular bank, 
15 feet high, exposed to the west, and partly sheltered from the 
south-west by a house. R. Dalhousiae has annually appeared 
on this, the seeds being imported by winds or birds from the 
neighbouring forest. The seedlings, however, perished till 
within the last two years, since which time abundance of Lyco- 
