Parrya rydbergii

Botschantzev

Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 178. 1955.

Basionym: Parrya platycarpa Rydberg Bull. Torrey Bot. Club 39: 326. 1912,
Synonyms: Neuroloma rydbergii (Botschantzev) Botschantzev Parrya nudicaulis subsp. rydbergii (Botschantzev) Hultén Parrya nudicaulis var. rydbergii (Botschantzev) N. H. Holmgren
Treatment appears in FNA Volume 7. Treatment on page 513. Mentioned on page 512, 514.

Plants densely cespitose, caudex branched; densely glandular or, rarely, eglandular. Stems (0.3–) 0.5–1.5 (–2.6) dm. Leaves: petiole (0.5–) 1.5–5 (–7) cm, to 5 mm wide at base; blade obovate to spatulate or broadly oblanceolate to lanceolate, (1–) 2–5 (–8) cm × (7–) 13–26mm, base cuneate or attenuate, margins incised to coarsely dentate, apex acute. Racemes 3–15-flowered. Fruiting pedicels (proximalmost) 4–15 (–20) mm. Flowers: sepals oblong, 5.5–9 × 1.5–2.5 mm; petals lavender to purple, (15–) 16–20 (–23) × 7–9 mm, claw 8–12 mm, apex emarginate; median filaments 4–6 mm; anthers 1.5–2 mm. Fruits narrowly oblong to linear-lanceolate, (2–) 3–5 cm × 5–7 mm; valves densely glandular; ovules 10–16 per ovary; style 0.5–1.5 mm. Seeds 4–5 × 3.5–4.5 mm; wing 1–2 mm wide.


Phenology: Flowering late Jun–Jul.
Habitat: Barren rock slides, alpine tundra, finely divided limestone rubble, calcareous talus, shale slopes, alpine rocky slopes, crevices among boulders
Elevation: 2900-3700 m

Discussion

Parrya rydbergii, which is restricted to Uinta and Emmons mountains in Utah (Daggett, Duchesne, Summit, and Uintah counties) and Beartooth and Big Sheep mountains in Wyoming (Park and Sublette counties), was treated by E. Hultén (1971) as a subspecies of P. nudicaulis and reduced by R. C. Rollins (1993) to synonymy of that species. It is geographically disjunct from P. nudicaulis and can be easily distinguished from that nearest relative.

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

... more about "Parrya rydbergii"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ihsan A. Al-Shehbaz +
Botschantzev +
attenuate +  and cuneate +
Parrya platycarpa +
appendaged +  and unappendaged +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
not auriculate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
dentate +, subentire +  and entire +
obovate;spatulate or broadly oblanceolate +
much smaller +  and reduced +
1.3 cm13 mm <br />0.013 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
urceolate +, campanulate +  and tubular +
eglandular +  and branched +
well-developed +
distinct +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
differentiated +
emarginate +  and entire +
Utah +  and Wyo. +
2900-3700 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
not basally +  and dilated +
actinomorphic +
, +, latiseptate +, stipitate +  and sessile +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
indehiscent +  and dehiscent +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
narrowly oblong +  and linear-lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Barren rock slides, alpine tundra, finely divided limestone rubble, calcareous talus, shale slopes, alpine rocky slopes, crevices among boulders +
connate +  and distinct +
decurrent +
dentate to pinnately lobed +  and entire +
incised;coarsely dentate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
semiannular +  and annular +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
2 cm20 mm <br />0.02 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
lavender +  and purple +
16mm;20mm +
rudimentary +
obovate +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering late Jun–Jul. +
trinucleate +  and 3(-11)-colpate +
Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. +
3-15-flowered +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
divaricate-ascending +  and ascending +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
flattened +
mucilaginous +
aseriate +, biseriate +  and uniseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flattened +, suborbicular +  and broadly ovate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
persistent +  and caducous +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
procumbent +  and decumbent +
2-lobed +, cylindric +  and conical +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Neuroloma rydbergii +, Parrya nudicaulis subsp. rydbergii +  and Parrya nudicaulis var. rydbergii +
Parrya rydbergii +
species +
scale-like +  and forked +
glandular +  and eglandular +
pubescent +  and glabrous +
anastomosing +
eglandular +, glandular +  and scapose +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
plant +  and cespitose +
aquatics +  and terrestrial +
glabrous +  and pubescent +
1mm;2mm +