Eriogonum wrightii var. membranaceum

S. Stokes ex Jepson

Fl. Calif. 1: 416. 1914.

Common names: Ringed-stem bastard-sage
Synonyms: Eriogonum trachygonum subsp. membranaceum (S. Stokes ex Jepson) S. Stokes Eriogonum wrightii subsp. membranaceum (S. Stokes ex Jepson) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 291. Mentioned on page 290.

Subshrubs, 2–4 (–5) × 3–6 dm, mostly thinly tomentose. Leaves: petiole bases forming distinct ring around stem; blade elliptic, 0.2–0.6 (–1) × 0.1–0.3 (–0.4) cm. Inflorescences virgate or cymose; branches usually slender. Involucres 2–3 mm. Flowers 3–4 mm; perianth white to pink or rose. Achenes 2.5–3 mm.


Phenology: Flowering Jul–Oct.
Habitat: Gravelly to rocky soils, chaparral communities, oak and conifer woodlands
Elevation: 300-2200 m

Distribution

V5 569-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Variety membranaceum is a basically Mexican taxon that barely enters the flora area (southwesternmost Kern, western Imperial, Los Angeles, western Riverside, southeastern San Bernardino, San Diego, and southern Ventura counties). The ring-like petiole bases that surround the node are distinctive, being seen otherwise only in some of the perennial species of Chorizanthe in Chile. Ringed-stem bastard-sage is occasionally planted as an ornamental; it is particularly attractive to honey bees. The variety is related to both var. dentatum (S. Stokes) Reveal and var. taxifolium (Greene) Parish of Baja California, Mexico.

Selected References

None.

Lower Taxa

None.

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

0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
light-brown;brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
S. Stokes ex Jepson +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
glabrous +, subglabrous +, tomentose +  and floccose +
oblanceolate;broadly elliptic +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
scale-like +  and triangular +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not brittle +
spreading +  and erect +
glabrous +, floccose +  and tomentose +
scabrellous +
ridged +, angled +  and round +
slender +
whorled +, opposite +  and alternate +
Ringed-stem bastard-sage +
Calif. +  and Mexico (Baja California) +
300-2200 m +
pilose +  and glabrous +
unisexual +, , +  and bisexual +
not attenuate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decumbent to erect +  and prostrate +
not fistulose +
stout;slender +
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 +
Gravelly to rocky soils, chaparral communities, oak and conifer woodlands +
reduced +
cymose +  and virgate +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
connate +  and free +
arranged +  and disposed +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrous +, floccose +  and tomentose +
turbinate +  and narrowly campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
nonmembranous +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
white;pink or rose +
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 />) +
tomentose +  and floccose +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Jul–Oct. +
homostylous +  and 3-carpellate +
distinct +
, +  and solid +
slender;stout +
persistent +
Illustrated +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decumbent to erect +  and prostrate +
spreading +  and erect +
glandular +, pubescent +  and glabrous +
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 +
Eriogonum trachygonum subsp. membranaceum +  and Eriogonum wrightii subsp. membranaceum +
chambered +  and solid +
slender +  and stout +
Eriogonum wrightii var. membranaceum +
Eriogonum wrightii +
variety +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and greenish or reddish +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +