Rumex transitorius

Rechinger f.

Repert. Spec. Nov. Regni Veg. 40: 296. 1936.

Common names: Pacific willow dock
Endemic
Synonyms: Rumex salicifolius var. transitorius (Rechinger f.) J. C. Hickman
Treatment appears in FNA Volume 5. Treatment on page 512. Mentioned on page 493.

Plants perennial, glabrous, with vertical rootstock. Stems ascending, ascending-decumbent, or erect, simple or producing axillary shoots below 1st-order inflorescence or at proximal nodes, 25–70 cm. Leaf-blades linear-lanceolate or lanceolate, 6–15 (–17) × 2–4 cm, usually ca. 3.5–6 times as long as wide, widest near middle or nearly so, thin or rarely subcoriaceous, base cuneate, margins entire, undulate or slightly crisped, apex acute. Inflorescences terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, dense or occasionally interrupted near base, usually broadly paniculate (branches simple or with few 2d-order branches). Pedicels articulated in proximal 1/3, filiform, 3–7 mm, equaling or 1.5–2 times as long as inner tepals, articulation indistinctly swollen. Flowers 10–20 (–25) in whorls; inner tepals, broadly ovate to ovatelanceolate, occasionally almost triangular, (2.5–) 3–3.5 × 2–2.5 mm, base truncate or rounded, margins entire or indistinctly erose, apex obtuse or subacute; tubercles 3 (occasionally 1 in var. monotylos Rechinger f., then very large, subequal or only slightly narrower than inner tepal), distinctly unequal (1 larger tubercle subequal or slightly narrower than inner tepal), usually smooth. Achenes dark reddish-brown, 1.8–2.4 × 1–1.5 mm. 2n = 20.


Phenology: Flowering late spring–early summer.
Habitat: Coastal dunes and marshes, shores of rivers and streams, wet meadows
Elevation: 0-2000 m

Distribution

V5 1049-distribution-map.gif

B.C., Alaska, Calif., Oreg., Wash.

Discussion

J. T. Kartesz (1987, vol. 1) reported Rumex transitorius from Washoe County, Nevada; the morphological characters mentioned in his description suggest another taxon of the R. salicifolius aggregate. Records from Idaho also need confirmation.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.No values specified.

... more about "Rumex transitorius"
unwinged +  and weakly winged +
dark reddish-brown +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
1mm;1.5mm +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
Rechinger f. +
leafy +  and regular +
not articulated +
rounded +, truncate +  and cuneate +
subcoriaceous +
crisped;undulate;flat;crisped;undulate;flat +
foliaceous +  and perfoliate +
scale-like +
tuberculate +
just below the soil surface or and above the soil surface +  and spreading +
Pacific willow dock +
B.C. +, Alaska +, Calif. +, Oreg. +  and Wash. +
0-2000 m +
free +  and distinct +
unisexual +, bisexual +  and , +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Coastal dunes and marshes, shores of rivers and streams, wet meadows +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
always distinctly wider and longer +
triangular +, broadly ovate +  and ovatelanceolate +
2mm +  and 2.5mm +
nonmembranous +
15 cm150 mm <br />0.15 m <br /> (17 cm170 mm <br />0.17 m <br />) +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
deciduous +
cauline +  and basal +
erose +  and entire +
pubescent +  and glabrous +
crisped +, undulate +  and entire +
smaller +
narrower +
swollen +
partly +  and foliaceous +
deciduous +  and persistent +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
accrescent +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering late spring–early summer. +
(2-)3(-4)-carpellate +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
Repert. Spec. Nov. Regni Veg. +
slender;stout +
producing axillary shoots +  and simple +
decumbent +  and procumbent +
erect +, ascending-decumbent +  and ascending +
1/5 +  and 1/3 +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Rumex salicifolius var. transitorius +
Rumex transitorius +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +