Alyssum szowitsianum

Fischer & C. A. Meyer

Index Seminum (St. Petersburg) 4: 31. 1837.

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

Annuals; canescent throughout, trichomes appressed, coarse, 8–16-rayed, rays often subequal. Stems often several from base, erect, ascending, or decumbent, (unbranched or few-branched distally), (0.2–) 0.4–1.6 (–2) dm. Cauline leaves subsessile; blade oblanceolate or linear-oblanceolate, (0.5–) 0.7–1.5 (–2) cm × (1–) 2–4 (–6) mm (gradually smaller distally), base attenuate, apex subacute. Fruiting pedicels ascending to suberect, straight, stout, 1–3 (–4) mm, trichomes uniformly stellate. Flowers: sepals oblong, 1.2–1.5 × 0.5–0.6 mm, stellate-pubescent (trichomes with longer rays and appearing simple near apex); petals pale-yellow, spatulate, 1.7–2 × 0.4–0.5 mm, base abruptly narrowed to claw, apex deeply emarginate, glabrous; filaments: median pairs not toothed, slightly expanded basally, lateral pair with basal appendage to 0.5 × 0.1 mm, often apically 2-toothed, 1.4–1.7 mm; anthers ovate, 0.1–0.2 mm. Fruits ovate-oblong, (3–) 3.5–5 × (2.5–) 3–4 mm, apex obtuse; valves uniformly inflated at middle, broadly flattened at margins, densely stellate-pubescent (rays equal); ovules 2 per ovary; style (slender), 0.3–0.5 mm, basally stellate-pubescent. Seeds ovoid, compressed, 1.6–1.9 × 1.2–1.6 mm, margins winglike, 0.1–0.3 mm wide. 2n = 16.


Phenology: Flowering May.
Habitat: Rocky soil
Elevation: 1500-2000 m

Distribution

V7 322-distribution-map.gif

Introduced; Utah, sw Asia

Discussion

Alyssum szowitsianum is known in the flora area only from Salt Lake County.

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 szowitsianum"
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Obtuse (?) +  and Subacute (?) +
Ihsan A. Al-Shehbaz +
Fischer & C. A. Meyer +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
sessile +  and petiolate +
not +  and rosulate +
narrowed +  and attenuate +
appendaged +  and unappendaged +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
dissected +, repand +, sinuate +, crenate +  and dentate +
linear-oblanceolate;oblanceolate +
much smaller +  and reduced +
2mm;4mm +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
not +  and differentiated +
emarginate +  and entire +
incumbent +  and accumbent +
Utah +  and sw Asia +
1500-2000 m +
straight +  and curved +
appendaged +, winged +  and not winged +
connate +  and distinct +
lateral +  and median +
2-toothed +  and not toothed +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
actinomorphic +
latiseptate +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
3.5mm;5mm +
ovate-oblong +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
latiseptate +  and unsegmented +
Rocky soil +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
0.1mm +  and 0.3mm +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
rudimentary +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Flowering May. +
trinucleate +  and 3(-11)-colpate +
Index Seminum (St. Petersburg) +
elongated +
reflexed +  and ascending +
stout +  and slender +
not +  and branched +
subequal +
not +  and mucilaginous +
not +  and winged +
aseriate +  and biseriate +
not +  and mucilaginous +
White (?) +, Black (?) +, Brown (?) +  and Yellow (?) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
compressed +  and ovoid +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
persistent +  and caducous +
distinct +
erect +  and spreading +
stellate-pubescent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
decumbent +, ascending +  and erect +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
stellate-pubescent +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Cruciferae +
Alyssum szowitsianum +
species +
simple +  and sessile +
stellate-pubescent +
flattened +  and inflated +
anastomosing +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
ascending +  and suberect +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +