Paronychia baldwinii

(Torrey & A. Gray) Fenzl ex Walpers

Repert. Bot. Syst. 1: 262. 1842.

Common names: Baldwin’s nailwort
Endemic
Basionym: Anychia baldwinii Torrey & A. Gray Fl. N. Amer. 1: 172. 1838
Synonyms: Anychiasatrum baldwinii (Torrey & A. Gray) Small Anychiasatrum riparium (Chapman) Small Paronychia baldwinii var. ciliata Chaudhri Paronychia baldwinii subsp. riparia (Chapman) Chaudhri Paronychia riparia
Treatment appears in FNA Volume 5. Treatment on page 34. Mentioned on page 31.

Plants annual, biennial, or perennial, often matted; taproot slender. Stems prostrate to erect, branched, 5–70 cm, mostly retrorsely to spreading-pubescent on 1 side or throughout. Leaves: stipules lanceolate, 2–6 mm, apex acuminate, entire; blade oblong to elliptic or oblanceolate, 3–25 × 1–6 mm, herbaceous, apex acute and briefly cuspidate, glabrous. Cymes terminal, 20–40+-flowered, diffuse, lax, repeatedly forked or dichotomous. Flowers 5-merous, ± short-cylindric, with enlarged hypanthium and calyx cylindric, 1–1.7 mm, glabrous to pubescent with short hairs, often minutely ciliate, sometimes glaucous; sepals greenish or greenish white to brownish, veins absent, ovate to oblong, 0.8–1.3 mm, herbaceous, margins white, 0.05–0.1 mm wide, scarious to papery, apex terminated by minute cusp, hood narrowly rounded, cusp light green to whitish, straight, short-conic, 0.1–0.15 mm, minutely scabrous; staminodes subulate, 0.2–0.3 mm; style 1, cleft in distal 4/5+, 0.2–0.4 mm. Utricles ellipsoid, 1–1.3 mm, papillate distally.


Phenology: Flowering summer–fall.
Habitat: Dunes, woodlands, fields, clearings, roadsides, riverbanks, hummocks, waste places
Elevation: 0-200 m

Distribution

V5 56-distribution-map.gif

Ala., Fla., Ga., N.C., S.C., Va.

Discussion

Chaudhri used duration and pubescence to recognize two subspecies of Paronychia baldwinii, characters that L. H. Shinners (1962c) found to vary independently in this species.

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 baldwinii"
awned +  and hooded +
cuspidate +  and entire +
ascending +  and slightly descending +
acute;acuminate +
Ronald L. Hartman +, John W. Thieret +  and Richard K. Rabeler +
(Torrey & A. Gray) Fenzl ex Walpers +
prominent +
stipulate +  and petiolate +
not +  and connate +
Anychia baldwinii +
often +  and needlelike +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
oblong +  and elliptic or oblanceolate +
succulent +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
cylindric +
Baldwin’s nailwort +
straight +
short-conic +
minute +
dichotomous +  and 20-40+-flowered +
dish--shaped +
expanded +
Ala. +, Fla. +, Ga. +, N.C. +, S.C. +  and Va. +
0-200 m +
peripheral +
connate +  and distinct +
glaucous +, glabrous +  and pubescent +
unisexual +  and bisexual +
short-cylindric +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
sometimes +  and indehiscent +
stalked +  and simple +
Dunes, woodlands, fields, clearings, roadsides, riverbanks, hummocks, waste places +
straight +
rounded +
tapering +  and cup-shaped +
sessile +  and petiolate +
adjacent +  and opposite +
connate +
all +  and distalmost +
fimbriate +  and entire +
scarious +  and papery +
0.05mm +  and 0.1mm +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
fugacious +
4 +  and 5 +
Flowering summer–fall. +
Repert. Bot. Syst. +
compressed +, subglobose +  and ellipsoid +
greenish white +  and brownish +
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 />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (?) +  and 0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +
prostrate;erect +
spreading-pubescent +
terete;angular +
5 cm50 mm <br />0.05 m <br /> (70 cm700 mm <br />0.7 m <br />) +
subterminal +
[50 +  and 2 +
papillate +
silvery +  and white +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
connate +  and distinct +
subcapitate +  and filiform +
0.007 cm0.07 mm <br />7.0e-5 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Anychiasatrum baldwinii +, Anychiasatrum riparium +, Paronychia baldwinii var. ciliata +, Paronychia baldwinii subsp. riparia +  and Paronychia riparia +
Paronychia baldwinii +
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 +
papillate +
ellipsoid +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.13 cm1.3 mm <br />0.0013 m <br /> (?) +
membranous +
8 (?) +  and 10 (?) +
ovate +  and oblong +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
not rhizomatous +  and taprooted +
perennial +, biennial +  and annual +
plant +  and matted +
pubescence of simple hairs or stalked glands +  and glabrous +
9 +, 8 +  and 7 +