Paronychia congesta

Correll

Brittonia 18: 307. 1967.

Common names: Rio Grande nailwort
EndemicConservation concern
Treatment appears in FNA Volume 5. Treatment on page 36. Mentioned on page 32.
Revision as of 09:38, 30 July 2020 by imported>Volume Importer
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Plants perennial; caudex woody, branched. Stems erect, 6–10 cm, evenly puberulent with spreading hairs. Leaves: stipules lanceolate, 4–7 mm, apex acuminate, entire; blade linear or needlelike, 4–7 × ca. 0.5 mm, leathery, apex spinulose, puberulous. Cymes terminal, 7–28+-flowered, branched, mostly congested in clusters 5–15 mm wide. Flowers 5-merous, extended-urecolate, with prominent hypanthial bulge and calyx tapering somewhat distally, 2.8–3.1 mm, moderately pubescent with straight, spreading to appressed hairs generally throughout; sepals green to redbrown, veins absent or midrib and lateral pair of veins evident in fruit, lanceolate to oblong, 1.3–1.5 mm, leathery to rigid, margins translucent, less than 0.05 mm wide, scarious, apex terminated by awn, hood prominent, narrowly rounded, awn widely divergent, 0.5–0.7 mm, broadly conic in proximal 1/2–2/3 with yellowish, ± glabrous spine; staminodes subulate, ca. 0.5 mm; style 1, 2-lobed in distal 1/3–3/5, 0.5–0.7 mm. Utricles ± ovoid, 0.8–0.9 mm, ± smooth, glabrous.


Phenology: Flowering spring–summer.
Habitat: Thorn scrubland openings
Elevation: 200-300 m

Discussion

Of conservation concern.

Paronychia congesta is known only from two collections in Jim Hogg County.

Selected References

None.

Lower Taxa

None.

"/10" is not declared as a valid unit of measurement for this property. "/10" is not declared as a valid unit of measurement for this property.

... more about "Paronychia congesta"
awned +  and hooded +
spinulose +  and entire +
ascending +  and slightly descending +
puberulous +
acuminate +
Ronald L. Hartman +, John W. Thieret +  and Richard K. Rabeler +
Correll +
prominent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
stipulate +  and petiolate +
not +  and connate +
often +  and needlelike +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
needlelike +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (?) +
reduced +
tapering +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
Rio Grande nailwort +
branched +  and 7-28+-flowered +
5mm;15mm +
dish--shaped +
expanded +
200-300 m +
peripheral +
connate +  and distinct +
unisexual +  and bisexual +
sometimes +  and indehiscent +
stalked +  and simple +
Thorn scrubland openings +
straight +
spreading +  and appressed +
rounded +
tapering +  and cup-shaped +
sessile +  and petiolate +
adjacent +  and opposite +
connate +
all +  and distalmost +
translucent +  and white +
fimbriate +  and entire +
0mm +  and 0.05mm +
lanceolate +  and oblong +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
leathery +  and rigid +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
fugacious +
4 +  and 5 +
Flowering spring–summer. +
compressed +, subglobose +  and ellipsoid +
green +  and redbrown +
persistent +
subulate;linear-oblong lanceolate spatulate or ovate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Endemic +  and Conservation concern +
0.5 cm5 mm <br />0.005 m <br /> (?) +
branched +  and simple +
puberulent +
terete;angular +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subterminal +
[50 +  and 2 +
papillate +
silvery +  and white +
lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
connate +  and distinct +
2-lobed +
0.007 cm0.07 mm <br />7.0e-5 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Anychia +, Anychiastrum +, Gastronychia +, Gibbesia +, Nyachia +, Odontonychia +  and Siphonychia +
Paronychia congesta +
Paronychia +
species +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
divided +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (?) +  and 0.09 cm0.9 mm <br />9.0e-4 m <br /> (?) +
membranous +
8 (?) +  and 10 (?) +
not rhizomatous +  and taprooted +
pubescence of simple hairs or stalked glands +  and glabrous +
9 +, 8 +  and 7 +