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SUMMARY:
Route notes describe the march from camp to Lola Pass and a very steep descent, followed by a difficult traverse to a camp on the Chudi Chu with multiple stream crossings. Botanical collections 3634–3643 are listed, including several rhododendrons and primulas with habitat and diagnostic notes.

CONTENT:
20a

Camp to Lola Pass. 2 miles. Continue up R bank for a mile, with a considerable climb over a fir clad ridge, then over boggy open ground. Path then crosses the stream & climbs about 300 ft steeply, gradually easing off & turning more South. The last 300' is fairly steep but the whole route to the Pass is easy.

Descent to camp at m 4. Descent very steep indeed, fairly open for 1/2 mile, then through dense fir & rhodo forest. At m 3 the main stream is crossed to the R bank, & the valley turns South. Follow this down, crossing to L bank at 3 1/2. A poor camp available at m 4.

3634. R. exasperatum. A fine Barbatum Ser. Rhod. Common among R. Thomsonii & Abies. Beautiful rich crimson corolla.

3635. Rhod. lopangense Thomsonii Series. Very common. Seems to have more indumentum on under leaf than R. Thomsonii.

3636. Primula aff. atrodentata. (P. crispa?) This does not appear to be P. atrodentata. It is smaller, a smaller less pronounced eye, colour rather different. Only seen in one place.

3637. Primula vernicosa. Only differs in habitat. First time seen in dense jungle. Smaller flower than usual.

3638. Diapensia yellow. The first time we have seen this yellow one. Common.

3639. Asteropyrum peltatum. Ranunculus sp.

3640. Primula geraldinae sp. nov. Common where found. The mark of this is the farinaceous eye. Only growing on quite inaccessible cliff faces in wet moss. A pretty primula & new to us.

3641. Rhod. sulphureum sp. (small yellow shrub). Fairly common, on cliff faces.

3642. Rhod. forrestii var repens sp. aff repens. Does not appear to be repens, or even serpens. Found to the left (North) of Primula geraldinae 3640.

3643. Rhod. hodgsonii grande.

Camp to Camp on Chudi Chu. 6m. Keep down the L bank through dense rhodo & fir forest. Path very bad indeed, along logs & up & down notched logs, for 2 miles to bridge (1 plank) over main stream to R. bank. Thence path very bad still through dense forest, very steep in places to a very small clearing - room for three tents to camp, where there is a bridge to the L bank again. Path very difficult the whole way. Rough bearing of march 340° M.

SUMMARY:
Notes several rhododendron specimens (1385–1390) and a primula (P. whitei) collected around 12,500 ft, including a reference to an earlier Sanden Mera specimen. Danung will go higher tomorrow to search for more, and Tenduk found a yellow primula; a brief sighting of tragopan is mentioned. The party intends to move on toward Tsari soon.

CONTENT:
57

big cluster of pale pink flowers, each on a long pedicel, a magenta patch at the base, 1385 (Rhod. hodgsonii): an almost equally big one, rather mauve pink when fully open, 1386 (Rhod. preptum): a beautiful deep crimson tree 1387 (Rhod. erosum), which looks like a barbatum series. The most delicate of the lot 1390 (Rhod. sherriffii), a bell shaped flower, with umbels of 3 or 4 flowers, of a very deep carmine colour (P. whitei). We also found the primula which had been found, withered, near here. It was still in full bloom at about 12500 ft, and turned out to be our old friend of Sanden Mera, No 1168. I collected it under No. 1388 (P. whitei).

Very likely there are more flowers higher up, and Danung will go up tomorrow to see what he can find.

I also saw, just a fleeting glimpse, what I think were tragopan, but could not get a shot at them.

There must be a good many about though, as I heard them calling. One could stay here quite a long time, but Tsari is our aim, so I think we should get on there as soon as possible now. Tenduk found the yellow sikkimensis primula again, just a few specimens of it.