Thelypodium Howellii Ssp. Spectabilis Raceme Slender , Lax, Loosely Flowered Brassicaceae Howell’S Thelypody

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Thelypodium howellii ssp. spectabilis Raceme slender , lax, loosely flowered Brassicaceae Howell’s thelypody Gerald D. Carr Erect herb, stem usually single from the base, 10-80 cm tall, often branched above Gerald D. Carr Gerald D. Carr Flowers with greenish-purple, Julie Kierstead Nelson lanceolate sepals, lavender to purple spatulate petals, Illustrated by Linda Vorobik white-scarious margins, and From: Threatened and Endangered Vascular Plants of Oregon (1982) paired, free filaments R. J. Meinke Biennial, glabrous, glaucous, erect herb. Stem usually single from the base, occasionally several, 10-80 cm tall, often branched above. Leaves: basal leaves oblanceolate to spatulate, usually pinnately toothed, lobed or parted, 2-10 cm long; cauline leaves lanceolate to linear lanceolate, sessile or auriculate, entire, 1-10 cm long. Inflorescence a raceme, slender, loosely flowered, lax. Flower: sepals green to purplish, lanceolate, 5-9 mm long; petals spatulate, lavender to purple, 9-20 mm long, 1.5-3 mm wide; whitescarious margins on sepals and petals; paired filaments free. Fruit a silique, terete, straight to slightly incurved,1.5-8 cm long, 1-2 mm wide. Lookalikes differs from featured plant by best survey times Thelypodium howellii ssp. howellii its slightly smaller flowers and lack of spatulate, J | F | M | A | M | J | J | A | S | O | N | D paired free filaments Thelypodium howellii S. Watson ssp. spectabilis (M. Peck) Al-Shehbaz Howell’s thelypody PLANTS symbol: THHOS2 August 2019 status Federal:LT; Oregon:LE; ORBIC: List 1 Distribution: The Powder River Valley of Baker and Union Cos., Oregon. Also known historically from northern Malheur Co., Oregon. Habitat: Moist (often alkaline) plains and river valleys. Elevation: 900–1100 m Best survey time (in flower): June – August Associated species: Sarcobatus vermiculatus (Greasewood) Leymus cinereus (Basin wildrye) Chenopodium (Goosefoot).

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