Silene invisa

C. L. Hitchcock & Maguire

Revis. N. Amer. Silene, 31, plate 4, fig. 25. 1947.

Common names: Short-petalled campion
Endemic
Treatment appears in FNA Volume 5. Treatment on page 187. Mentioned on page 172, 183, 194.

Plants perennial; taproot stout; caudex becoming branched, bearing tufts of leaves. Stems several, erect, unbranched proximal to inflorescence, 10–40 cm, puberulent. Leaves mostly basal, petiolate, blade oblanceolate or spatulate, 1.5–5 cm × 2–6 mm, apex acute, glabrous except for a few cilia on petiole; cauline leaves in 2–4 pairs, reduced distally, blade linear to narrowly lanceolate or oblanceolate, 2–7 cm × 2–6 mm. Inflorescences cymose, 1–3-flowered, open, bracteate; cyme 1, terminal, often with 1 flower at next node; bracts linear-lanceolate, 5–20 mm. Pedicels erect, from 0.5 cm, lengthening to 3 cm in fruit, gray and somewhat retrorse-puberulent with stipitate-glandular hairs. Flowers: calyx prominently 10-veined, veins parallel, green, with pale commissures, broadened in lobes, narrowly campanulate and 7–11 × 3–4 mm in flower, campanulate and 8–12 × 4–5 mm in fruit, tending to broaden proximally, glandular-puberulent, lobes 5, erect, lanceolate, 1–2 mm, apex blunt; petals cream to pink, often tinged with dusky purple, slightly longer than calyx, limb 1–2 mm, unlobed or apex notched; stamens equaling calyx; stigmas 3, equaling calyx. Capsules narrowly ovoid, 10–13 mm, slightly longer than calyx, opening with 6 outwardly curved teeth; carpophore shorter than 1 mm. Seeds brown, reniform, angular, 0.7–1 mm, margins with large, balloonlike papillae, sides rugose. 2n = 48.


Phenology: Flowering summer.
Habitat: Moist openings in coniferous forests on mountain slopes
Elevation: 900-2900 m

Distribution

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Calif.

Discussion

Silene invisa is found in the Cascades and Sierra Nevada. It is a rare species very similar to S. drummondii, from which it can usually be distinguished by its smaller size, glabrous leaves, and the large, inflated papillae of the seeds. Plants with intermediate characters occur in Nevada and Arizona.

Selected References

None.

Lower Taxa

None.

"lengthening" is not a number.

... more about "Silene invisa"
awned +  and not hooded +
notched;blunt;acute +
John K. Morton +
C. L. Hitchcock & Maguire +
dentate +, emarginate to 2-fid +  and entire +
2 cm20 mm <br />0.02 m <br /> - 7 cm70 mm <br />0.07 m <br /> +
linear +  and narrowly lanceolate or oblanceolate +
rarely +  and not succulent +
0.2 cm2 mm <br />0.002 m <br /> - 0.6 cm6 mm <br />0.006 m <br /> +
linear-lanceolate +
reduced +
0.5 cm5 mm <br />0.005 m <br /> - 2 cm20 mm <br />0.02 m <br /> +
scarious +  and herbaceous +
slightly longer +
1 cm10 mm <br />0.01 m <br /> - 1.3 cm13 mm <br />0.013 m <br /> +
1 cm10 mm <br />0.01 m <br /> - ? +
conspicuous +
Short-petalled campion +
dissected +  and variously--shaped +
dish--shaped +
expanded +
900-2900 m +
peripheral +
subsessile +  and sessile +
conspicuous +
glandular-pubescent +
unisexual +  and bisexual +
campanulate +
stalked +  and simple +
Moist openings in coniferous forests on mountain slopes +
stipitate-glandular +
bracteate +, open +, 1-3-flowered +  and cymose +
whorled +  and opposite +
connate +
conspicuous +
unlobed +
1mm +  and 2mm +
purplish +  and green +
glandular-puberulent +
1 - ? +  and 4 - ? +
campanulate +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
balloonlike +
retrorse-puberulent +
0 cm0 mm <br />0 m <br /> - 3 cm30 mm <br />0.03 m <br /> +
tinged with dusky purple +, cream +  and pink +
fugacious +
slightly longer +
Flowering summer. +
Revis. N. Amer. Silene, +
papillate +  and tuberculate +
reniform +
0.07 cm0.7 mm <br />7.0e-4 m <br /> - 0.1 cm1 mm <br />0.001 m <br /> +
2.8 cm28 mm <br />0.028 m <br /> - 4 cm40 mm <br />0.04 m <br /> +
persistent +
1 cm10 mm <br />0.01 m <br /> - 2.8 cm28 mm <br />0.028 m <br /> +
rhizomatous +  and stoloniferous +
fewer +  and 10 +
prostrate +, decumbent +  and sprawling +
puberulent +
10 cm100 mm <br />0.1 m <br /> - 40 cm400 mm <br />0.4 m <br /> +
papillate +
distinct +
4 +, 5 +  and 3 +
filiform +
0.15 cm1.5 mm <br />0.0015 m <br /> - 2 cm20 mm <br />0.02 m <br /> +
Anotites +, Atocion +, Coronaria +, Gastrolychnis +, Lychnis +, Melandrium +, Physolychnis +, Viscaria +  and Wahlbergella +
Silene invisa +
species +
divided +
10-30-veined +
purplish +, whitish +  and green +
inflated +, terete +, cylindric +  and campanulate urceolate or clavate +
membranous +
3 - ? +  and 5 - ? +
0.8 cm8 mm <br />0.008 m <br /> - 1.2 cm12 mm <br />0.012 m <br /> +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> - 0.2 cm2 mm <br />0.002 m <br /> +
0.4 cm4 mm <br />0.004 m <br /> - 0.5 cm5 mm <br />0.005 m <br /> +
stoloniferous +, rhizomatous +  and taprooted +
pubescence of simple hairs or stalked glands +  and glabrous +