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33b. Chorizanthe brevicornu Torrey var. spathulata (Small ex Rydberg) C. L. Hitchcock in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 2: 103. 1964.
Great Basin brittle spineflower
Chorizanthe spathulata Small ex Rydberg, Bull. Torrey Bot. Club 39: 309. 1912; C. brevicornu subsp. spathulata (Small ex Rydberg) Munz
Plants 0.5-2(-3) × 0.5-2 dm. Leaf blades broadly oblanceolate to broadly spatulate, 1-2 × 0.5-1 cm, apex round. Involucres obscurely ribbed at maturity. 2n = 38.
Flowering Apr-Jul. Sandy to gravelly places, mixed grassland, saltbush, blackbrush, and sagebrush communities, pinyon and/or juniper woodlands; 700-2900(-3100) m; Calif., Idaho, Nev., Oreg.
Variety spathulata is known only from the cold deserts of the Intermountain West.
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