Drymaria effusa var. effusa

Treatment appears in FNA Volume 5. Treatment on page 12.

Plants annual, herbaceous, minutely glandular-puberulent or glabrate, not glaucous. Stems mostly erect, usually unbranched at base, 0.8–25 cm. Leaves sometimes appearing whorled proximally, opposite distally; stipules ± deciduous, simple, subulate, 0.5–1.2 mm; petiole absent or nearly so; blade orbiculate or spatulate (basal leaves) or linear to oblong (cauline leaves), 0.5–2.5 cm × 0.2–1.2 mm, base briefly obtuse or attenuate, apex rounded to apiculate. Inflorescences terminal, congested or open, 7–50+-flowered cymes. Pedicels shorter to longer than subtending bracts at maturity. Flowers: sepals with 3 prominent veins arcing outward at midsection and confluent apically, broadly ovate to elliptic (herbaceous portion narrowly elliptic to ovate), 1.5–2.3 mm, unequal, outer 2 shorter (± 0.5 mm) than inner, apex acute or obtuse (herbaceous portion acute to acuminate), hood oblique to apex, on outer 2 or all 5 sepals formed in part by scarious margins, glabrous or glandular; petals 2-fid for ca. 1/2+ their length, 1.5–4 mm, 11/4–11/2 times as long as sepals, lobes 1-veined, vein unbranched, linear, trunk absent, base gradually tapered, apex rounded. Seeds brown, snail-shell to teardrop-shaped, 0.6–0.7 mm; tubercles minute, rounded.


Phenology: Flowering late summer–early fall.
Habitat: Rocky or gravelly flats or slopes, disturbed areas in pine or oak woodland
Elevation: 1400-1900 m

Distribution

V5 7-distribution-map.gif

Ariz., n Mexico (Sinaloa), n 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;obtuse;acute;rounded;apiculate +
Ronald L. Hartman +
A. Gray +
tapered;attenuate;obtuse +
emarginate +  and entire +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
spatulate or linear +  and 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 +
7-50+-flowered +
dish--shaped +
expanded +
Ariz. +, n Mexico (Sinaloa) +  and n Mexico (Sonora) +
1400-1900 m +
peripheral +
connate +  and distinct +
unisexual +  and bisexual +
stalked +  and simple +
Rocky or gravelly flats or slopes, disturbed areas in pine or oak woodland +
dish or cupshaped +
open +  and congested +
axillary +  and terminal +
stipulate +, sessile +  and petiolate +
opposite +  and whorled +
connate +
membranous +
white +  and purple +
swollen +
5 +, all +  and 2 +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
erect;spreading or reflexed +
shorter to longer +
fugacious +
11/4-11/2 times as long as sepals +
Flowering late summer–early fall. +
Smithsonian Contr. Knowl. +
tuberculate +
snail-shell +  and teardrop-shaped +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
not +  and hooded +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
persistent +
distinct +
glandular +  and glabrous +
broadly ovate;elliptic +
unequal +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (25 cm250 mm <br />0.25 m <br />) +
[30 +, 2 +  and 3 +
papillate +
white +  and tan +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 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 effusa var. effusa +
Drymaria effusa +
variety +
divided +
short-clawed +  and oblong +
expanded +
spreading +  and recurved +
not rhizomatous +  and taprooted +
not glaucous +, glabrate +  and glandular-puberulent +