Muhlenbergia 4: 67. 1908.
Synonyms: Fritillaria atropurpurea var. pinetorum (Davidson) I. M. Johnston
Treatment appears in FNA Volume 26. Treatment on page 170. Mentioned on page 165, 166, 167.
Bulb scales: large 2–5; small 45–50. Stem 1–4 dm, ± glaucous. Leaves 4–20, in whorls of 2–3 leaves per node proximally, alternate distally, 5–15 cm, often equaling or larger than inflorescence; blade linear, glaucous; distal leaves usually ca. 1/3–1/2 length of proximalmost leaf. Flowers ± erect, occasionally nodding; tepals purplish, clearly mottled greenish yellow, 1.4–1.9 cm, apex not recurved; nectaries obscure, yellow, dotted brown, widely ovate, 2/3 tepal length; style obviously branched to near base, branches longer than 1.5 mm. Capsules angled. 2n = 26.
Phenology: Flowering May–Jun.
Habitat: Shaded or partially shaded granitic slopes
Elevation: 1800–3200 m
Fritillaria pinetorum is easily confused with F. atropurpurea.
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