Eriogonum pharnaceoides var. pharnaceoides

Common names: Wire-stem wild buckwheat
Treatment appears in FNA Volume 5. Treatment on page 408.

Plants 1–5 dm. Basal leaves: petiole usually 0.3–0.5 (–1) cm; blade 2–4 × 0.2–0.4 cm. Inflorescences (10–) 20–45 cm. Perianths white to rose.


Phenology: Flowering Jul–Nov.
Habitat: Sandy or gravelly slopes, sagebrush communities, oak, pinyon-juniper, and montane conifer woodlands
Elevation: 1400-2500 m

Distribution

V5 845-distribution-map.gif

Ariz., N.Mex., Mexico (Chihuahua)

Discussion

Variety pharnaceoides is found infrequently throughout its range in northern and eastern Arizona (Apache, Cochise, Coconino, Gila, Graham, Greenlee, Mohave, Navajo, Pima, Pinal, Santa Cruz, and Yavapai counties) and western New Mexico (Catron, Grant, Hidalgo, Luna, Sierra, Socorro, and Taos counties). Thurber (773, NY) gathered the only known collection from Mexico at Janos, Chihuahua, in 1852.

Selected References

None.

Lower Taxa

None.

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

brown;blackish +
included +  and exserted +
lenticular +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Torrey in L. Sitgreaves +
deciduous +  and persistent +
stipelike +
Eriogonum sect. Ganysma +
awn-tipped +  and simple +
greenish +  and yellowish green +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
glabrous +, villous +, tomentose +  and white-lanate +
linear-lanceolate;linear-oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not awn-tipped +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Wire-stem wild buckwheat +
Ariz. +, N.Mex. +  and Mexico (Chihuahua) +
1400-2500 m +
unisexual +, , +  and bisexual +
not attenuate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decumbent to erect +  and prostrate +
not fistulose +
slender;stout +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy or gravelly slopes, sagebrush communities, oak, pinyon-juniper, and montane conifer woodlands +
open +  and cymose +
capitate +  and subcapitate +
racemose +, paniculate +  and cymose-paniculate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (45 cm450 mm <br />0.45 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
20 cm200 mm <br />0.2 m <br /> (45 cm450 mm <br />0.45 m <br />) +
3 cm30 mm <br />0.03 m <br /> (40 cm400 mm <br />0.4 m <br />) +
connate +  and free +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
campanulate +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
marcescent +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
revolute +  and plane +
not swollen +
orthotropous +
accrescent +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
glabrous;villous +
erect to deflexed +
filiform;capillary +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Jul–Nov. +
homostylous +  and 3-carpellate +
in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers, +
, +  and solid +
slender;stout +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
decumbent to erect +  and prostrate +
spreading +  and erect +
glabrous +, short-hispid +, villous +, hirsute +, floccose +  and tomentose +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
spreading;erect +
chambered +  and solid +
slender +  and stout +
Eriogonum pharnaceoides var. pharnaceoides +
Eriogonum pharnaceoides +
variety +
emarginate +  and entire +
1/5 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
mostly erect +  and spreading +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
annual +  and perennial +
reddish +, yellowish green +  and greenish +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +