Androsace filiformis

Retzius

Observ. Bot. 2: 10. 1781 ,.

Common names: Filiform rock jasmine
Synonyms: Androsace capillaris Greene
Treatment appears in FNA Volume 8. Treatment on page 262. Mentioned on page 260.

Plants annual, slender, not mat-forming. Leaves in single rosette; petiole present; blade ovate to deltate, 5–25 × 2–6 mm, base abruptly narrowing to winged petiole, margins without hairs, surfaces glabrous or slightly glandular, glands not stipitate. Scapes (often multiple), 5–25, 3–12 cm, glabrescent. Inflorescences 5–20-flowered; involucral-bracts lanceolate, relatively narrow. Pedicels erect to arcuate, filiform, unequal, 1–6 cm. Flowers: calyx campanulate to hemispheric, without prominent ridges, ca. 2 mm, lobes erect, triangular, apex acute; corolla-tube shorter than calyx, limb ca. 2 mm diam. Capsules slightly shorter than calyx, 2–4 mm. 2n = 20 (Asia).


Phenology: Flowering early-mid summer.
Habitat: Wet meadows
Elevation: 100-3000 m

Distribution

V8 535-distribution-map.gif

Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo., Europe, e Asia (Russian Far East)

Discussion

Androsace filiformis grows in wetlands and is easily identified by the tiny flowers and delicate, filiform inflorescence that give the plants a graceful appearance. No other North American Androsace occurs in wetlands. Androsace filiformis occurs widely across Europe and Asia (including the Russian Far East) and in the western continental United States, with a notable gap in Alaska and Canada.

Selected References

None.

Lower Taxa

None.
... more about "Androsace filiformis"
not connivent +
emarginate;entire +
Sylvia Kelso +
Retzius +
multiple +  and single +
cuneate +  and attenuate +
narrowing +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
crenulate +  and denticulate +
ovate;deltate +
2mm;6mm +
1 (?) +  and 10 (?) +
puberulent +, pilose +  and glabrous +
campanulate +  and hemispheric +
2 cm20 mm <br />0.02 m <br /> (?) +
globose +  and subglobose +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Filiform rock jasmine +
Calif. +, Colo. +, Idaho +, Mont. +, Oreg. +, Utah +, Wash. +, Wyo. +, Europe +  and e Asia (Russian Far East) +
100-3000 m +
operculate +  and capsular +
not stipitate +
Wet meadows +
grayish white +
nectariferous +
involucrate +  and 2-20-flowered +
2 cm20 mm <br />0.02 m <br /> (?) +
triangular +
dentate +  and entire +
tenuinucellate +  and bitegmic +
elongating +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering early-mid summer. +
Observ. Bot. +
glabrescent +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
reticulate to almost +
trigonous +  and 4-angled to somewhat +
connate +  and distinct +
inflated +
Androsace capillaris +
Androsace filiformis +
Androsace +
species +
inflated +
stoloniferous +  and rhizomatous +
plant +  and not mat-forming +