Dodecatheon subalpinum

Eastwood

Leafl. W. Bot. 2: 37. 1937 ,.

Common names: Sierran shootingstar
Endemic
Synonyms: Primula subalpina (Eastwood) Mast & Reveal
Treatment appears in FNA Volume 8. Treatment on page 274. Mentioned on page 268, 269, 270, 271.

Plants 7–15 (–25) cm; scape glabrous. Caudices not obvious at anthesis; roots reddish, bulblets usually present. Leaves (2.5–) 3–8 (–10) × 0.5–1.5 (–1.8) cm; petiole usually not winged; blade oblanceolate to narrowly spatulate, base usually slightly decurrent onto stem, gradually tapering to petiole, margins entire, sometimes slightly undulate, surfaces glabrous. Inflorescences 1–5 (–8) -flowered; bracts linear to narrowly lanceolate, 2–6 mm, glabrous. Pedicels 1–2 (–3.5) cm, glabrous. Flowers: calyx green, 3.5–6 mm, glabrous, tube 2–3 mm, lobes 5, 2.5–4.5 mm; corolla-tube usually yellow, sometimes white with dark maroon, thick, wavy ring, lobes 5, usually magenta, sometimes white, 5–9 (–12) mm; filaments connate, tube dark maroon, 2–3.5 × 1–1.5 mm; anthers 3–4 mm; pollen-sacs yellow, streaked with purple, connective dark maroon, transversely rugose, (infrequently seemingly longitudinally wrinkled); stigma not enlarged compared to style. Capsules tan, valvate, cylindric-ovoid, 6–10 (–13) × 3–4.5 mm, glabrous; walls thin, pliable. Seeds without membrane along edges. 2n = 66.


Phenology: Flowering summer.
Habitat: Moist slopes, mainly shady places in conifer woodlands or in meadows and along stream banks
Elevation: 2100-4000 m

Discussion

Dodecatheon subalpinum is known from the high western slopes of the central and southern Sierra Nevada from Tuolumne County to Tulare County. This high-elevation ecotype might be considered a variety of D. hendersonii, for which the epithet yosemitanum H. Mason is available.

Selected References

None.

Lower Taxa

None.

"reddish" is not a number. "maroon" is not a number. "purple" is not a number.

... more about "Dodecatheon subalpinum"
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
acute;mostly acute;rounded +
James L. Reveal +
Eastwood +
whitish +  and yellowish +
tapering +  and decurrent +
crenulate +  and denticulate +
oblanceolate;narrowly spatulate +
linear +  and narrowly lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not keeled +  and tubular +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric-ovoid +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
not obvious +
minute +
Sierran shootingstar +
white with dark maroon +  and yellow +
short-tubular +
2100-4000 m +
operculate +  and capsular +
Moist slopes, mainly shady places in conifer woodlands or in meadows and along stream banks +
nectariferous +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
white +  and magenta +
usually longer +
reflexed +  and spreading +
undulate +
membranous +
tenuinucellate +  and bitegmic +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
white;pink or violet or magenta +
Flowering summer. +
streaked with purple +  and yellow +
Leafl. W. Bot. +
dark-brown +  and black +
alveolate +
globose +  and ovoid or quadrate +
toothlike +
connate +  and distinct +
nearly +  and erect +
inflated +
not enlarged +
Primula subalpina +
Dodecatheon subalpinum +
Dodecatheon +
species +
dark maroon +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1mm;1.5mm +
perennial +  and annual +
stoloniferous +  and rhizomatous +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +