Eriogonum giganteum var. compactum

Dunkle

Bull. S. Calif. Acad. Sci. 41: 130. 1943.

Common names: Santa Barbara Island’s St. Catherine’s-lace
Endemic
Synonyms: Eriogonum giganteum subsp. compactum (Dunkle) Munz
Treatment appears in FNA Volume 5. Treatment on page 302. Mentioned on page 301.

Plants 4–6 (–10) dm. Aerial flowering-stems (1.5–) 2–3 dm, tomentose. Leaves: petiole 0.5–1 cm; blade oblong-ovate, 2.5–3.5 (–6) × 1.5–2 (–4) cm, densely white-tomentose on both surfaces or sometimes slightly less so adaxially. Inflorescences compact to rarely open, 2–15 cm wide. Involucres (3–) 3.5–4 (–5) mm. Flowers 2–2.5 mm. Achenes 2–2.5 mm.


Phenology: Flowering May–Oct.
Habitat: Rocky outcrops and cliffs, coastal scrub communities
Elevation: 0-100 m

Discussion

Of conservation concern.

Variety compactum is a rare and localized plant on Santa Barbara and Sutil islands, Santa Barbara County. It is in cultivation, but only in botanical gardens.

Selected References

None.

Lower Taxa

None.

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included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
Dunkle +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
greenish +  and cinereous +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
white-tomentose +
oblong-ovate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
oblanceolate +  and elliptic +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not brittle +
spreading +  and erect +
tomentose +  and floccose or glabrate +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Santa Barbara Island’s St. Catherine’s-lace +
0-100 m +
unisexual +, , +  and bisexual +
not attenuate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 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 +
Rocky outcrops and cliffs, coastal scrub communities +
reduced +
compact +  and rarely open +
capitate +  and subcapitate +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
connate +  and free +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
nonmembranous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
crisped +  and plane +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
white-villous +
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 />) +
Flowering May–Oct. +
homostylous +  and 3-carpellate +
Bull. S. Calif. Acad. Sci. +
, +  and solid +
slender;stout +
persistent +
0.2 cm2 mm <br />0.002 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 giganteum subsp. compactum +
chambered +  and solid +
slender +  and stout +
Eriogonum giganteum var. compactum +
Eriogonum giganteum +
variety +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
grayish +  and reddish +
tomentose +  and floccose or glabrate +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +