Eriogonum capillare

Small

Bull. Torrey Bot. Club 25: 51. 1898.

Common names: San Carlos wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 392. Mentioned on page 383.

Herbs, erect, annual, (1–) 2–4 dm, glabrous. Stems: caudex absent; aerial flowering-stems erect, solid, not fistulose, 0.5–1.5 dm, glabrous. Leaves basal; petiole 1–3 cm, sparsely villous; blade obovate to round, 1–3 × 1–3 cm, sparsely villous to hirsute and greenish to grayish on both surfaces, margins plane. Inflorescences cymose, usually dense, 10–30 × 5–35 cm; branches not fistulose, glabrous; bracts 3, scalelike, 0.5–3 × 0.5–2.5 mm. Peduncles erect, straight, slender, 1–3 cm, glabrous. Involucres campanulate, 1–1.5 × 1–1.5 mm, glabrous; teeth 5, erect, 0.2–0.4 mm. Flowers 1–1.6 mm; perianth white with greenish or reddish midribs, becoming pink to rose, glabrous; tepals dimorphic, those of outer whorl pandurate with swollen, auriculate bases, those of inner whorl oblanceolate; stamens included to exserted, 0.8–1.2 mm; filaments glabrous. Achenes shiny brown to black, 3-gonous, 1.3–1.6 mm, glabrous.


Phenology: Flowering Sep–Oct.
Habitat: Sandy flats and washes, saltbush, greasewood, and mesquite communities
Elevation: 500-1500 m

Discussion

Eriogonum capillare is known from southeastern Arizona (Gila, Graham, Greenlee, and Pima counties) and extreme southwestern New Mexico, where it is rare in northwestern Hidalgo County.

Selected References

None.

Lower Taxa

None.

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

... more about "Eriogonum capillare"
brown;black +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
deciduous +  and persistent +
auriculate +  and swollen +
Eriogonum sect. Ganysma +
awn-tipped +  and simple +
greenish +  and grayish +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
sparsely villous +  and hirsute +
obovate;round +
1cm;3cm +
not awn-tipped +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
scabrellous +
not fistulose +
spreading +  and erect +
whorled +, opposite +  and alternate +
San Carlos wild buckwheat +
Ariz. +  and N.Mex. +
500-1500 m +
unisexual +, , +  and bisexual +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 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 flats and washes, saltbush, greasewood, and mesquite communities +
capitate +  and subcapitate +
racemose +, paniculate +  and cymose-paniculate +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
campanulate +
nonmembranous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
marcescent +
persistent +
bractlike +
pubescent +  and glabrous +
reddish +  and greenish +
not swollen +
orthotropous +
accrescent +
erect to deflexed +
filiform;capillary +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Sep–Oct. +
homostylous +  and 3-carpellate +
Bull. Torrey Bot. Club +
, +  and solid +
slender;stout +
persistent +
included +  and exserted +
decumbent to erect +  and prostrate +
spreading +  and erect +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
chambered +  and solid +
Slender (?) +  and Stout (?) +
Eriogonum capillare +
Eriogonum subg. Ganysma +
species +
emarginate +  and entire +
1/5 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
annual +  and perennial +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +