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SUMMARY:
Notes a plan for Tsongpen Tenduk to visit the Pelada camp to collect items including primula seed, mentions a north-trending valley with seasonal yak herders’ huts, and describes rainy halts at Marulhang on the Rinchen Chu with exploratory walks over passes. Observations include Primula alpicola (luna), Meconopsis bella, and other alpine species, though little new was found.

CONTENT:
Geranium
large flowered geranium 3356, of which we only saw two specimens.
Tsongpen Tenduk will go over to our camp on Pelada of 6th-10th June tomorrow & pick up a few things there, including, I hope, seed of the new primula.
The valley goes away north for a good long way apparently, & I intend to follow it up for a day or two. No houses here, but a few huts, occupied for a short time later, by the yak herdsmen. No others are allowed here except for a very few days while passing to other grazing ground.

3rd July. Halt. Marulhang, Rinchen Chu. Rained all day. Purbo & I went up a side valley to the East, over a pass & into another N-S valley beyond. Then north & over another pass, back by a side valley coming down 1/2 m above camp. We saw a good deal of the primula 3353 (P. alpicola luna), & a good deal of Meconopsis bella 3361 (entire leaf form), but little else of interest which was new. Anemone rupicola 3358, P. sapphirina, pusilla & Hopeana are everywhere at the right height. A pretty beastly day.

4th July. Halt. Marulhang, Rinchen Chu. Rained very hard all day & all last night. Purbo & I went upstream & worked in some side valleys, but not high, and found nothing but a primula of the Sikkimensis section No 3370 (P. alpicola luna). It appears to be somewhat like P. 3353, in leaf shape, but it has nothing of farina; the corolla is rather smaller and not such a green-

SUMMARY:
Tsongpen Tenduk returned with notable primula collections, especially P. tsarongensis v. alba (3366) and P. sonchifolia (3367), regarded as the best finds so far, amid persistent heavy rain causing drying difficulties. A route note records travel to Omta Tso (4 miles) along the Rinchen Chu/Maru Chu at approximately 14,500 ft with poor weather conditions.

CONTENT:
MB section 5-11 - Tang Chu

yellow. Tsongpen Tenduk came back today with a good
haul of things, but no seeds. Far away the best, were two
P. tsarongensis v. alba 3366, P. sonchifolia 3367
primulas, or two forms of one primula, 3366 + 3367, both
magnificent flowers, though unfortunately Petiolarids. I measured
one of the specimens of 3367 at 1 3/4", full, across. 3366 was in
masses, by the hundred yards: 3367 in rather a small
patch, but closely packed. These are the best things collected
so far. (P. flagellaris 3368) A few P. tenella were brought, & they certainly seem
very near the Chanderi primula, but the scape is much shorter,
leaves smaller, & only one specimen was seen with two
flowers. I will be interested to hear the Professor's remarks on
the Chanderi primula. A most cheering evening to an
otherwise foul day of pouring rain + strong wind. Everything
is pretty sodden, & flowers take a horrible long time to dry. The
drying paper seems as wet as ever only an hour or two after
changing.

13700 ft To via Maru Chu (Rinchen Chu)
5th July, Omta Tso. 4 miles. BP. 187.6. Temp. 47° Time 5.0 pm. Ht. 14500 app.
Rained all night, very hard all day. Path keeps up R bank of
Rinchen Chu (known here as Maru Chu) to m 1 1/2, where there are two
huts, then crosses by a bridge to L bank, climbs up to an open
P.