Minuartia drummondii

(Shinners) McNeill

Notes Roy. Bot. Gard. Edinburgh 24: 147. 1962.

Common names: Drummond’s stitchwort
Endemic
Basionym: Arenaria drummondii Shinners Field & Lab. 17: 89. 1949,
Treatment appears in FNA Volume 5. Treatment on page 124. Mentioned on page 116, 117, 125.

Plants annual. Taproots filiform. Stems erect to ascending, green, 5–20 cm, stipitate-glandular, often densely so, internodes of all stems 1–3 times as long as leaves. Leaves overlapping proximally, perfoliate proximally, with ± loose, scarious to herbaceous sheath 0.5–1 mm; blade green, flat, 1-veined, oblanceolate to cuneate (proximal) to oblong-lanceolate to ovate (remaining cauline), 5–30 (–35) × 2–4 mm, flexuous, margins not thickened, ± scarious, smooth, apex green to purple, obtuse to abruptly pointed, dull, glabrous; axillary leaves absent. Inflorescences 7–12-flowered, open cymes, or rarely solitary, terminal; bracts ± lanceolate, herbaceous, sometimes scarious-margined proximally. Pedicels reflexed in fruit, 0.5–2.5 cm, stipitate-glandular. Flowers: hypanthium disc-shaped; sepals obscurely veined, ovate to broadly elliptic (herbaceous portion ovate to broadly elliptic), 3–6 mm, to 7 mm in fruit, apex green or purple, acute to acuminate, not hooded, stipitate-glandular; petals obovate to oblanceolate, 2–2.5 times as long as sepals, apex rounded, broadly notched. Capsules sessile, broadly ellipsoid, 6–7.5 mm, equaling or longer than sepals. Seeds dark-brown to blackish, orbiculate with radicle prolonged into beak, only slightly compressed, 0.7–0.8 mm, echinate with rounded tubercles.


Phenology: Flowering late winter–early summer.
Habitat: Open grassy woodlands, sandy soils
Elevation: 0-500 m

Discussion

Minuartia drummondii is easily recognized by the proportionally large corollas (petals to three times as long as sepals) and pedicels reflexing in fruit.

Selected References

None.

Lower Taxa

None.
... more about "Minuartia drummondii"
purple +  and green +
stipitate-glandular +  and glabrous +
notched;rounded;acute;acuminate +
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
(Shinners) McNeill +
Arenaria drummondii +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
flexuous +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblanceolate +  and cuneate +
herbaceous +  and succulent +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
scarious-margined +
lanceolate +
reduced +
scarious +  and herbaceous +
ellipsoid +
0.6 cm6 mm <br />0.006 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Drummond’s stitchwort +
axillary +  and terminal +
dish--shaped +
expanded +
Ark. +, La. +, Okla. +  and Tex. +
0-500 m +
straight +  and curved +
central +  and peripheral +
axillary +  and terminal +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Open grassy woodlands, sandy soils +
disc--shaped +  and dish +
disc--shaped +
1-3 times as long as leaves +
overlapping +
connate +
scarious +  and herbaceous +
not thickened +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
stipitate-glandular +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
lilac +, pink +  and white +
fugacious +
2-2.5 times as long as sepals +
obovate +  and oblanceolate +
Flowering late winter–early summer. +
Notes Roy. Bot. Gard. Edinburgh +
prolonged +
dark-brown;blackish +
muriculate-papillate +  and tuberculate +
compressed +  and orbiculate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
distinct +
ovate;broadly elliptic +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
branched +  and simple +
erect;ascending +
stipitate-glandular +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
[30 +  and 3 +
papillate +
distinct +
filiform +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Alsinanthe +, Alsinopsis +, Lidia +, Minuopsis +, Porsildia +, Sabulina +, Tryphane +  and Wierzbickia +
Minuartia drummondii +
Minuartia +
species +
divided +
10 +  and 8 +
erect +  and recurved +
rhizomatous +  and taprooted +
pubescence of simple hairs or stalked glands +  and glabrous +
23 +, 15 +, 14 +, 13 +, 12 +, 10 +, 9 +  and 7 +