The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links
Dodecatheon conjugens

Bonneville shooting star, desert shootingstar, slim-pod shooting star

Ellis' shootingstar

Habit Plants 5–30(–40) cm; scape usually glabrous, sometimes glandular-puberulent proximally. Plants 10–30(–40) cm; scape glabrous.
Caudices

not obvious at anthesis;

roots whitish;

bulblets absent.

not obvious at anthesis;

roots white;

bulblets absent.

Leaves

3–13(–18) × 0.7–2.5(–4) cm;

petiole slender (at least proximally);

blade narrowly oblanceolate to spatulate or obovate, base usually not decurrent onto stem, usually abruptly tapering to petiole, margins entire, surfaces glabrous or glandular-puberulent.

4–20(–23) × 1.5–4(–6) cm;

petiole usually slender (at least basally);

blade broadly elliptic to ovate, base slightly decurrent onto stem, abruptly tapering to petiole, margins sinuate to dentate, surfaces glabrous.

Inflorescences

1–7(–10)-flowered;

bracts lanceolate to broadly lanceolate, 3–10 mm, glandular-puberulent.

1–6-flowered;

bracts narrowly lanceolate, 3–8(–10) mm, glabrous.

Pedicels

1–5 cm, glabrous or glandular-puberulent.

1.5–4.5(–5.5) cm, glabrous.

Flowers

calyx light green to yellowish, sometimes finely purple-speckled or -dotted, 5–12 mm, glabrous or glandular-puberulent, tube 2–6 mm, lobes 5, 3–7 mm;

corolla tube yellowish with purplish red, thin, wavy ring, lobes 5, usually magenta, sometimes white, 7–25(–35) mm;

filaments usually distinct, yellowish or dark maroon, 0.5–1.5 mm, rarely partially connate and tube 0.5–1.5 × 1.5–5 mm;

anthers 5–9 mm;

pollen sacs usually maroon or yellow, sometimes yellowish and speckled maroon, rarely with reddish purple to purple speckles, connective usually maroon, sometimes yellowish or light blue to whitish, transversely rugose;

stigma not enlarged compared to style.

calyx light green, 4–6 mm, glabrous, tube 2–3 mm, lobes 5, 2.5–4 mm;

corolla tube yellow with red, thin, wavy ring, lobes 5, usually white, rarely lavender, 13–20 mm;

filaments distinct, whitish yellow to yellow, 0.6–1 mm;

anthers 6.5–8 mm;

pollen sacs purplish to reddish purple or yellow, often streaked with red, connective yellow basally, smooth;

stigma not enlarged compared to style.

Capsules

tan, often striped with purple, usually operculate, rarely valvate, cylindric-ovoid, 8–17(–22) × 4–6(–8) mm, glabrous;

walls thin, pliable.

tan to light brown, valvate, narrowly ovoid, 9–13 × 3–5 mm, glabrous;

walls thin, pliable.

Seeds

without membrane along edges.

without membrane along edges.

2n

= 44.

Dodecatheon conjugens

Dodecatheon ellisiae

Phenology Flowering late spring–summer.
Habitat Moist, usually shady slopes in oak and conifer woodlands
Elevation 2400-3100 m (7900-10200 ft)
Distribution
from FNA
CA; ID; MT; NV; OR; WA; WY; AB; BC; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM; Mexico (Chihuahua)
[WildflowerSearch map]
Discussion

Varieties 2 (2 in the flora).

Both Dodecatheon conjugens and D. poeticum occur in proximity in the Columbia River gorge. Some specimens here assigned to var. conjugens may have scattered, minute glands on the pedicels that might indicate past hybridization with D. poeticum (e.g., G. N. Jones 6286, ORE; R. R. Halse 3790, OSC, WTU). Dodecatheon poeticum is densely glandular not only on the pedicels, but also on the calyx and scape. The type of minute glandular puberulence seen on var. conjugens found along the Columbia River west of The Dalles is somewhat similar to that seen on var. viscidum in western Montana and Canada. Some plants referred here to D. conjugens have slightly connate filaments that may indicate some intergradation with D. pulchellum var. pulchellum. This suggestion is supported by the tendency in the same plants to have narrower leaves.

Some newly emerged flowers tend to have connectives that are less rugose than normal. This is particularly true of some populations in southern Alberta and, to a lesser degree, in Saskatchewan.

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

Dodecatheon ellisiae occurs in two disjunct locations. In north-central New Mexico, it is found in the mountains of Bernalillo, Sandoval, and Torrance counties. In southeastern Arizona, it is known from the mountains of southern Apache (White Mountains), southern Graham (Pinaleno Mountains), Greenlee, and northeastern Santa Rita (Santa Catalina Mountains) counties. On the Graham Mountains in Arizona, the corolla lobes may be lavender. Plants in Arizona and Chihuahua have yellow stamens with some red speckling. It is not known if this is significant taxonomically; it does suggest a shift in pollinators.

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

Key
1. Leaf blades, scapes, and pedicels glabrous.
var. conjugens
1. Leaf blades, scapes proximally, and pedicels usually glandular-puberulent.
var. viscidum
Source FNA vol. 8, p. 271. FNA vol. 8, p. 279.
Parent taxa Primulaceae > Dodecatheon Primulaceae > Dodecatheon
Sibling taxa
D. alpinum, D. amethystinum, D. austrofrigidum, D. clevelandii, D. dentatum, D. ellisiae, D. frenchii, D. frigidum, D. hendersonii, D. jeffreyi, D. meadia, D. poeticum, D. pulchellum, D. redolens, D. subalpinum, D. utahense
D. alpinum, D. amethystinum, D. austrofrigidum, D. clevelandii, D. conjugens, D. dentatum, D. frenchii, D. frigidum, D. hendersonii, D. jeffreyi, D. meadia, D. poeticum, D. pulchellum, D. redolens, D. subalpinum, D. utahense
Subordinate taxa
D. conjugens var. conjugens, D. conjugens var. viscidum
Synonyms Primula conjugens D. dentatum subsp. ellisiae, D. dentatum var. ellisiae, Primula standleyana
Name authority Greene: Erythea 3: 40. (1895) Standley: Proc. Biol. Soc. Wash. 26: 195. 1913 ,
Web links