Argentina field notes, v1530
Page 177
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Transcription
Pearson - 1991 obviously parasitized, but only 1" tall. These two new shoots in B2 were the only new shoots we saw anywhere (including B1). A small "clump" of 4 slender culms growing a half meter out from B2 had only small rhizomes, no connection to B2. A couple of big coihue roots ran close to it. The dead shoots in B2 added up to 17 killed by parasites and 2 not obviously parasitized. There were 14 live yearlings over 1 m, some of which may have had dead tips. Hence, of 33 new shoots produced last year, at least 17 were killed by parasites. At B1 there were 12 new culms and shoots produced: 8 of them were live, over 1m, and 4 of those had dead tips; there was 1 short dead shoot (parasitized); and 3 parasitized shoots less than 1m but green at the base. Hence: 12 shoots produced last year, 8 of them parasitized. Took a quick look at the auxiliary clumps back the side road. The flowered clump that we noticed last year is still standing, with no seedlings nearby. The smallest clumps seem to be 5 or more years old. One flowering branch was mostly dead but included completely dead and dry flowered branches, at least one small new green flowering branch, and some branches with various combinations of green leaves and dried flower heads. Nov. 2. Rio Castano Overo. No signs of bloom yet, and no new shoots up yet. Found 2 examples of a marked yearling culm producing a new culm the next year. November 9.- Bariloche. Tested overnight an Abrothrix and an Auliscomys caught in desert habitat 13 km S Epuyen. Put in each of their cages a bud-shoot about 6 inches long, woody at the base but looking failry crisp at the tip; not yet above ground. The Abrothrix did not touch his; the Auliscomys ate a couple of inches of the more tender tip part but stopped when he came to the fibrous part. November 12.- Puerto Blest. Visited clump D2, two new shoots above ground. Then D1, part of which had bloomed last year. Most of last year's blooming culms still had some green on them and at lest a few green new blooms. No seedlings visible, no seeds in the seed heads. We excavated rhizomes at about 4 places and found no mixing of rhizomes of flowering and non- flowering culms, as though they were separte plants. The flowering rhizome systems had no live, fresh-looking buds or underground shoots, and no yearling culms. The youngest flowering culm was 4 years old when it flowered last year (cohort '86-87). There were 2 of them of that age. The non-flowering plant was not all that vigorous, however: no dead shoots and only 2 yearlings; some live-looking underground buds and shoots, however. No new shoots up yet at this clump. About 30 ft. away from D1, toward the road, are the canes of a very death clump, dead at least 10 years, and, 20 ft. from it, dead canes of a rather indistinct clump, also long-dead. Between these and D1, near where