Lomatium Ochocense Apiaceae Ochoco Lomatium

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Lomatium ochocense Apiaceae Ochoco lomatium Gerald D. Carr Gerald D. Carr Richard Helliwell leaf coarsely dissected tuberous taproot Photo of Helliwell 2313, unmounted specimen, UC Berkeley Herbarium inflorescence of many umbels of small, yellow flowers Plant from a tuberous taproot. Leaves thick, bluish-green, divided twice, but secondary divisions may be obscure. Inflorescence is many umbels of small, yellow flowers on stout flowering stems up to 7mm thick and 15-20 cm tall; um- bel has few connate bractlets at the base, concentrated on one side of the stem. Fruits are generally smooth and winged, 8-9 mm long and 4-5 mm wide. Richard Helliwell Lookalikes differs from featured plant by Lomatium cous its deeper green, more carrot-like leaf and its strongly leafy flower bracts. Lomatium leptocarpum its finely-dissected leaves with many small ultimate segments, and nearly linear fruits. Lomatium farinosum its more finely divided leaves with long, linear ultimate best survey times segments. J | F | M | A | M | J | J | A | S | O | N | D Lomatium ochocense Helliwell & Constance in ed. Ochoco lomatium PLANTS symbol: LOOC2 August 2019 status ORBIC: List 1 Photo of Helliwell 2313, unmounted specimen in UC Berkeley Herbarium Distribution: Found in the Ochoco Mountains, near the North Fork Crooked River, in Crook County, Oregon. Habitat: Dry, rocky, shallow soils. Elevation: 1300–1500 m Best survey time (in flower): April to June Associated species: Poa secunda (Sandberg bluegrass) Artemisia rigida (Stiff sagebrush, Scabland sagebrush) Danthonia unispicata (Onespike danthonia, Few flowered wild oatgrass) Lomatium cous (Cous) Achnatherum hendersonii (Henderson's ricegrass).

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