Drymaria leptophylla var. leptophylla

Synonyms: Drymaria tenella A. Gray
Treatment appears in FNA Volume 5. Treatment on page 13.

Plants annual, herbaceous, glabrous, not glaucous. Stems erect, sparingly branched, 8–25 cm. Leaves mostly opposite; stipules ± deciduous, divided into 2 filiform segments, 0.3–1 mm; petiole absent or nearly so; blade linear to narrowly oblong, 0.5–2.5 cm × 0.2–1.2 mm, base attenuate, apex rounded to apiculate. Inflorescences terminal, open, (5–) 15–75-flowered cymes. Pedicels shorter to longer than subtending bracts at maturity. Flowers: sepals with 3 prominent veins arcing outward at midsection and confluent apically, lanceolate to ovate (herbaceous portion lanceolate), 1.8–3.5 mm, unequal, with outer 2 often shorter (± 0.5 mm) than inner, apex acute to acuminate (herbaceous portion similar), hood oblique to apex, at least weakly developed on outer 2 sepals, glabrous or sessile-glandular; petals 2-fid for 1/2 or less their length, 1.3–2.6 mm, 1/2–1 times as long as sepals, lobes 1-veined, vein unbranched, linear, trunk absent, base gradually tapered, apex rounded. Seeds tan, snail-shell-shaped, lateral thickenings absent, 0.6–0.7 mm; tubercles minute, rounded. 2n = 36.


Phenology: Flowering late summer–early fall.
Habitat: Rocky or gravelly flats or slopes, disturbed areas in pine or oak woodland
Elevation: 1700-2400 m

Distribution

V5 12-distribution-map.gif

Ariz., Colo., N.Mex., Tex., Mexico (Baja California), Mexico (Chihuahua), Mexico (San Luis Potosí), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

not +  and hooded +
rounded;acute;acuminate +
Ronald L. Hartman +
(Chamisso & Schlechtendal) Fenzl ex Rohrbach +
tapered;attenuate +
Arenaria leptophylla +
emarginate +  and entire +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
linear +  and narrowly oblong +
not succulent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
reduced +
ellipsoid;globose +
with oblong or expanded , sessile or short-clawed trunk +  and tapering +
(5-)15-75-flowered +
dish--shaped +
expanded +
Ariz. +, Colo. +, N.Mex. +, Tex. +, Mexico (Baja California) +, Mexico (Chihuahua) +, Mexico (San Luis Potosí) +  and Mexico (Sonora) +
1700-2400 m +
peripheral +
connate +  and distinct +
unisexual +  and bisexual +
stalked +  and simple +
Rocky or gravelly flats or slopes, disturbed areas in pine or oak woodland +
sessile-glandular +  and glabrous +
dish or cupshaped +
axillary +  and terminal +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
stipulate +, sessile +  and petiolate +
connate +
membranous +
white +  and purple +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
erect;spreading or reflexed +
shorter to longer +
fugacious +
Flowering late summer–early fall. +
tuberculate +
snail-shell--shaped +
not +  and hooded +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
persistent +
distinct +
1/2 +  and 2 +
lanceolate;ovate +
unequal +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
[30 +, 2 +  and 3 +
papillate +
white +  and tan +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
distinct +  and connate +
2 +  and 3 +
filiform +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Drymaria tenella +
Drymaria leptophylla var. leptophylla +
Drymaria leptophylla +
variety +
divided +
short-clawed +  and oblong +
expanded +
spreading +  and recurved +
not rhizomatous +  and taprooted +
not glaucous +  and glabrous +