Part 66 - Chubumbu La route notes and alpine plant specimens

1 page

SUMMARY:
Field notes describe the ascent to Chubumbu La with bearings, terrain, and vegetation changes, and map labels for nearby locations. The page records locations and observations for several alpine plants, including Rhododendron, Omphalogramma, and Primula specimens, with altitudinal ranges and morphological notes.

CONTENT:
33a

[Map Labels]
Potsangla
Chianang
Pass
Peak
Lagyong
Sheltangla
Chubumbu La
46°
65°
145°
162°

Rhododendron 3941 marked with label above camp of 6th. Same place for Nomocharis souliei, marked with stone, also small pink Rhododendron 3925, Rhododendron repens 3942 and Omphalogramma 3970.

X - To Chubumbu La 2 miles ascent. Ascent at first easy on either side of the main stream. This stream is followed more or less to the top. Owing to snow, we did not follow the path, which however exists. Path steep for the last mile, over rocky open hillside. The main valley on the South side flows at a bearing of almost 180°. Descent is steep, but a path appears to go off to the West, which may find an easy way down. Bare hill for 1 mile, then fir forest. Last 2 miles ascent from North are at a bearing of 142° approx.
Chubumbu La

3982. Omphalogramma brachysiphon. This must be the same as 3762. But when that was collected, I noticed all flowers had five lobes. Here again, nearly all are 5 lobed, but there are flowers with 6 lobes. Common from 13,000 - 13,500'.
      Chubumbu La

3983. Primula aff. strumosa. (chionogenes? Chubumbu La) I thought at first I had again found P. hilaris, but this is obviously not that. See 3648, 3754. I do not think this is the same, but cannot compare the specimens now. 3648 was already dropping its flowers when collected, the leaves had hardly appeared. This primula keeps its flowers till the leaves are quite well formed.
      (tsariensis x chionogenes? Chubumbu La)

3984. Primula tsariensis X. These are odd specimens, occurring only here and there, but always among plants of 3983. P. tsariensis from Tsari to here seems very constant. Only one or two plants with white flowers have been seen. (This does not include the Bhutan specimens). But this number