Flora of North America species comparison

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Androsace filiformis

filiform rock jasmine, slender rock jasmine, slender stem fairy candelabra, slender-stem Androsace, slender-stem rock-jasmine
Habit 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).

Androsace filiformis
Phenology Flowering early-mid summer.
Habitat Wet meadows
Elevation 100-3000 m (300-9800 ft)
Distribution
from FNA
CA; CO; ID; MT; OR; UT; WA; WY; Europe; e Asia (Russian Far East)
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 262.
Parent taxa Primulaceae > Androsace
Sibling taxa
A. chamaejasme, A. elongata, A. occidentalis, A. septentrionalis
Synonyms A. capillaris
Name authority Retzius: Observ. Bot. 2: 10. 1781 ,
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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