Achyronychia cooperi

Torrey & A. Gray

Proc. Amer. Acad. Arts 7: 331. 1868.

Illustrated
Treatment appears in FNA Volume 5. Treatment on page 47.

Stems 3–17 cm, mostly glabrous. Leaves pairs unequal; stipules 0.1–0.4 mm; blade 3–20 mm. Inflorescences 20–60+-flowered. Flowers: perianth 2.5–3 mm; hypanthium green, becoming brown and hard, 10-ribbed distally; sepals erect to spreading, concave, central portion green, fleshy, white, scarious portion forming an ovate to orbiculate apex, 1–1.3+ mm wide, becoming deciduous with age; staminodes ca. 0.5 mm. Seeds 0.9–1.1 mm.


Phenology: Flowering spring.
Habitat: Dry, sandy areas, sand dunes, desert washes
Elevation: 50-700 m

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Achyronychia cooperi"
not awned +  and entire +
Ronald L. Hartman +
Torrey & A. Gray +
stipulate +  and petiolate +
not +  and connate +
spatulate +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
succulent +
smaller +
white +  and green +
dish--shaped +
expanded +
Ariz. +, Calif. +  and Mexico +
50-700 m +
straight +  and slightly curved +
peripheral +
unisexual +  and bisexual +
sometimes +  and indehiscent +
stalked +  and simple +
Dry, sandy areas, sand dunes, desert washes +
brown +  and green +
connected +  and connate +
all +  and distalmost +
unequal +
fringed to ciliate +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fugacious +
4 +  and 5 +
Flowering spring. +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Proc. Amer. Acad. Arts +
compressed +  and ovoid +
persistent +
distinct +
erect;spreading +
concave +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Illustrated +
1 (?) +  and 4 (?) +
0.5 cm5 mm <br />0.005 m <br /> (?) +
prostrate;ascending +
terete;angular +
3 cm30 mm <br />0.03 m <br /> (17 cm170 mm <br />0.17 m <br />) +
[50 +  and 2 +
papillate +
ovate +  and spatulate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
filiform +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Achyronychia cooperi +
Achyronychia +
species +
divided +
not spreading +
toothlike +
not rhizomatous +  and taprooted +
pubescence of simple hairs or stalked glands +  and glabrous +
9 +, 8 +  and 7 +