Alyssum murale

Waldstein & Kitaibel

Descr. Icon. Pl. Hung. 1: 5. 1799.

Introduced
Treatment appears in FNA Volume 7. Treatment on page 250. Mentioned on page 248.

Perennials; (cespitose, sometimes caudex woody); canescent or not, trichomes stellate, 5–20-rayed. Stems often several from caudex (sterile shoots absent or few), usually erect or ascending, (2.5–) 3–6 (–7) dm. Cauline leaves subsessile; blade narrowly oblanceolate to linear, (0.5–) 0.7–2.5 (–3) cm × 1–5 (–8) mm (gradually smaller distally), base cuneate to attenuate, apex obtuse to subacute, (surfaces often more grayish abaxially than adaxially). (Racemes corymbose, in panicles terminating each stem.) Fruiting pedicels divaricate-ascending, straight or slightly curved distally, slender, (2–) 2.5–6 (–8) mm, trichomes uniformly stellate. Flowers: sepals oblong, 1.2–2 × 0.4–0.7 mm, stellate-pubescent; petals yellow, spatulate, 2.5–3.5 × 0.5–1 mm, base attenuate, apex often obtuse or rounded, glabrous abaxially; filaments: median pairs broadly winged, apically 1-toothed, lateral pair with lanceolate or narrowly oblong basal appendage, apically subacute, 1.5–2.5 mm; anthers oblong, 0.2–0.3 mm. Fruits broadly elliptic to orbicular, 3.5–5 × 2.5–5 mm, apex obtuse to rounded; valves not inflated, flattened and slightly undulate, stellate-pubescent; ovules 1 per ovary; style (slender) 1–2 mm, sparsely pubescent. Seeds suborbicular to broadly ovoid, compressed, 3–3.8 × 2–3.2 mm, margins winged, wing 0.5–0.9 mm wide. 2n = 16, 32.


Phenology: Flowering May–Jul.
Habitat: Waste areas, roadsides
Elevation: 1500-1800 m

Distribution

V7 324-distribution-map.gif

Introduced; Alta., B.C., Ont., Que., Colo., Oreg., Utah, Europe, sw Asia

Discussion

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Alyssum murale"
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Obtuse (?) +  and Rounded (?) +
Ihsan A. Al-Shehbaz +
Waldstein & Kitaibel +
oblong +  and lanceolate +
sessile +  and petiolate +
not +  and rosulate +
attenuate +  and cuneate +
appendaged +  and unappendaged +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
dissected +, repand +, sinuate +, crenate +  and dentate +
narrowly oblanceolate;linear +
much smaller +  and reduced +
1mm;5mm +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
not +  and differentiated +
emarginate +  and entire +
incumbent +  and accumbent +
Alta. +, B.C. +, Ont. +, Que. +, Colo. +, Oreg. +, Utah +, Europe +  and sw Asia +
1500-1800 m +
straight +  and curved +
connate +  and distinct +
lateral +  and median +
subacute +  and 1-toothed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
actinomorphic +
latiseptate +  and sessile +
3.5mm;5mm +
broadly elliptic +  and orbicular +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
latiseptate +  and unsegmented +
Waste areas, roadsides +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
rudimentary +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering May–Jul. +
trinucleate +  and 3(-11)-colpate +
Descr. Icon. Pl. Hung. +
elongated +
reflexed +  and ascending +
stout +  and slender +
not +  and branched +
not +  and mucilaginous +
not +  and winged +
aseriate +  and biseriate +
not +  and mucilaginous +
White (?) +, Black (?) +, Brown (?) +  and Yellow (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
compressed +, suborbicular +  and broadly ovoid +
0.2 cm2 mm <br />0.002 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
persistent +  and caducous +
distinct +
erect +  and spreading +
stellate-pubescent +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
Introduced +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
ascending +  and erect +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Cruciferae +
Alyssum murale +
species +
simple +  and sessile +
stellate-pubescent +
undulate +, flattened +  and not inflated +
anastomosing +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
curved +  and straight +
divaricate-ascending +
not +  and canescent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +
0.5mm;0.9mm +