Pearson-1990 17 Bamboo October 28- Visited A1 and A2 on Cerro Otto. Of 21 new dead shoots collected from A2, up to 15 inches tall, 18 of them had been parasitized (spiral borings, holes in culm sheaths, and frass). Only eight culms had survived and two of these had parasitized tops. So, of 29 new shoots, 20 had been parasitized. Clump A1 has produced no new shoots in the past 2 years. October 29- Counted leaves again on Cerro Otto. 100 feet east of clump A2 is a culm with two culms that are 35 and 32 mm diameter at 1 meter above ground; biggest I have seen. Note that culms in the center of a large clump are neither bigger nor smaller than those around the periphery. Since most of the new shoots appear around the periphery, the new ones are the same size as old ones. This is not true for brand new clumps in their first few years when each succeeding culm is larger than the one(s) the year before. October 30- On Cerro Otto it appears that the bud complement on culms with a damaged tip contain large central buds. The distance between bamboo clumps A2 and A1 is about 100 m. My analysis of the history of the habitat around A1 is that it was cleared of lenga forest 50 to 75 years ago for grazing and that it was grazed until 2 or 3 years ago, although not heavily. A2 is in second growth lenga; it might have been cleared at the same time as around A1 but was allowed to grow back to lenga. November 1- Llao Llao. At Clump B2 (crossroads) we harvested 5 dead shoots, 4 or more of them parasitized. Then censused the whole clump. There were 11 living yearling culms, 3 of which had parasitized tops. Hence a production of 15 shoots 7 of which had been parasitized. At Clump B1 (back the trail), we harvested 4 dead shoots, all parasitized. The clump had produced only one yearling culm, and it was parasitized at the top. There were 6 new shoots coming up. November 5- Portezuelo, Neuquen. Have finished weighing the rhizomes from the small clump excavated last year Nov. 27. This entire clump consisted of 6 culms with diameters 1m above the ground of: 13.5mm, 9.8, 13.7, 9.9, 11.9, and 8.8. The last was a dead culm and was measured at 8.7 cm above ground level. The rhizomes and rootlets fresh weighed 811 g, of which something like 115g was rootlets. I am a little unsure about whether they had partially dried out by then. A year later, air dried to constant weight, the total weight was 484g of which 108 g was rootlets. These figures are intended to