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Davidson's fritillary, pine fritillary, pine woods fritillary

Butte County fritillary

Bulb scales

large 2–5; small 45–50.

large 2–5; small 10–60.

Stem

1–4 dm, ± glaucous.

2–8 dm.

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.

in 1–2 whorls of 3–5 leaves per node proximally, alternate distally, 5–10 cm, usually shorter than inflorescence;

blade linear to narrowly lanceolate, ± glaucous;

distal leaves usually ± equaling 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.

nodding;

tepals pale greenish yellow to red, narrowly elliptic, 1–1.7 cm, apex usually flared to slightly recurved;

nectaries green, gold, or yellow, lanceolate, less than 1/3 tepal length;

style obviously branched for less than 1/2 its length, branches barely recurved, longer than 1.5 mm.

Capsules

angled.

angled.

2n

= 26.

= 24, 34, 36.

Fritillaria pinetorum

Fritillaria eastwoodiae

Phenology Flowering May–Jun. Flowering Apr–May.
Habitat Shaded or partially shaded granitic slopes Dry benches and slopes, sometimes on serpentine, in chaparral or beneath conifers
Elevation 1800–3200 m (5900–10500 ft) 500–1500 m (1600–4900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[BONAP county map]
Discussion

Fritillaria pinetorum is easily confused with F. atropurpurea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

This species is highly variable and shows evidence of either being of hybrid origin between Fritillaria recurva and F. micrantha, or, if it is of separate origin, appearing to hybridize easily with those two species. In the northern part of its range, F. eastwoodiae intergrades with F. recurva, whereas in the southern part of its range it intergrades with F. micrantha. Occasional individuals throughout the range display traits of both F. recurva and F. micrantha.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 170. FNA vol. 26, p. 169.
Parent taxa Liliaceae > Fritillaria Liliaceae > Fritillaria
Sibling taxa
F. affinis, F. agrestis, F. atropurpurea, F. biflora, F. brandegeei, F. camschatcensis, F. eastwoodiae, F. falcata, F. gentneri, F. glauca, F. liliacea, F. micrantha, F. ojaiensis, F. pluriflora, F. pudica, F. purdyi, F. recurva, F. striata, F. viridea
F. affinis, F. agrestis, F. atropurpurea, F. biflora, F. brandegeei, F. camschatcensis, F. falcata, F. gentneri, F. glauca, F. liliacea, F. micrantha, F. ojaiensis, F. pinetorum, F. pluriflora, F. pudica, F. purdyi, F. recurva, F. striata, F. viridea
Synonyms F. atropurpurea var. pinetorum F. phaeanthera
Name authority Davidson: Muhlenbergia 4: 67. (1908) R. M. MacFarlane: Madroño 25: 95. (1978)
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