Eastern Mojave Vegetation
Edited by Tom Schweich
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Eastern Mojave Vegetation
| Oregon Route 31 |
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Edited by Tom Schweich |
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Oregon Route 31 is a state highway in the U.S. state of Oregon that runs between the Central Oregon cities of La Pine and Lakeview. OR 31 traverses most of the Fremont Highway No. 19 of the Oregon state highway system,[2] named after John C. Frémont. The entire length of OR 31 is part of the Outback Scenic Byway, though the byway extends further south beyond the end of OR 31, to the California border. | ||||||||
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Junction: US Highway 97, just south of La Pine. | ||||||||
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Fort Rock Junction | |||||||||
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Locations: McCarty Butte. |
Ericameria nauseosa.
Coll. No. 3539, 30 September 2025, characters observed: Perennial shrub, 40 cm.; Stem, proximal, dull white, tomentose, resinous, almost to the involucres; Leaves, cauline, alternate, sessile, blade 20-37 mm. × (barely) 1 mm. wide, reduced distally, sulcate (not flat), linear, entire, tomentose; Heads, discoid; Involucre, 10 mm. × 4 mm. wide, obconic, glabrous; Phyllaries, unequal, 4±-series, outer << rest of involucre, inner 7-9 mm. × 1.8-1.2 mm. wide, glabrous, mid-vein, ±raised, visible along length, margins, flat, scarious, tips, acute; Receptacle, epaleate; Flowers of 1 kind; Disk flowers, #5±, tube 8-9 mm. + lobes 1 mm., yellow, throat expanding gradually, few short hairs proximally, otherwise glabrous; Pappus, many, well-developed bristles, 7 mm., ±equal; Anther, base rounded; Style, filiform, 2-branched, brush-like appendages, style 8.63 mm. + stigma 1.75 mm. + appendage 1.3 mm. (n=4); Stigma, > style appendages; Cypsela, 4-6 mm. × 0.6 mm. wide, compressed front-to-back, brown, hairy. Corolla lobes short for var. oreophila, but otherwise that seems to be the best fit.
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Silver Lake | |||||||||
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Picture Rock Pass Summit, 4,830 feet (1470 m.) | |||||||||
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Locations: Summer Lake. |
Summer Lake.
About 10 km north of the present (Summer Lake) lake margin, the Ana River has eroded into fine-grained lacustrine sediments and has exposed as much as 16 m of vertical section. The nature of these sediments and their paleomagnetic signal strongly suggest that the zone of anomalous directions represents actual geomagnetic field behavior that corresponds with the record from Mono Lake (Negrini, Davis, and Verosub, 1984). | ||||||||
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Hunter Hill Summit, elevation 4,205 feet (1,282 m.) | |||||||||
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Junction:NF 29 “Government Harvey Road”
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Junction: US Highway 395, just north of US Highway 395.
Date and time this article was prepared:
4/4/2026 7:57:57 PM
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