Eriogonum giganteum var. giganteum

Common names: Santa Catalina Island’s St. Catherine’s-lace
IllustratedEndemic
Treatment appears in FNA Volume 5. Treatment on page 301. Mentioned on page 296.

Plants (3–) 5–35 dm. Aerial flowering-stems 1–3 dm, tomentose to glabrate. Leaves: petiole 1–3 cm; blade oblong-ovate to ovate, 3–7 (–10) × 2–5 cm. Inflorescences open, 10–50 (–80) cm wide. Involucres 3–4 mm. Flowers 2–2.5 mm. Achenes 2–2.5 mm. 2n = 40.


Phenology: Flowering year-round.
Habitat: Rocky cliff faces, slopes, and ridges, coastal scrub communities, oak woodlands
Elevation: 0-500 m

Discussion

Of conservation concern.

Variety giganteum occurs naturally only on Santa Catalina Island, Los Angeles County. Mainland introductions occur from Santa Clara County to Los Angeles County; the variety has also been introduced onto Santa Cruz Island, where it threatens the genetic purity of E. arborescens. Garden hybrids between var. giganteum and E. arborescens have been named E. ×blissianum H. Mason.

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 +
S. Watson +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
7 cm70 mm <br />0.07 m <br /> (10 cm100 mm <br />0.1 m <br />) +
greenish +  and cinereous +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
glabrate +  and white-tomentose +
oblong-ovate;ovate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 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 Catalina Island’s St. Catherine’s-lace +
0-500 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 cliff faces, slopes, and ridges, coastal scrub communities, oak woodlands +
reduced +
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 +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate +
0.3 cm3 mm <br />0.003 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 +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering year-round. +
homostylous +  and 3-carpellate +
Proc. Amer. Acad. Arts +
, +  and solid +
slender;stout +
persistent +
Illustrated +  and Endemic +
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 +
chambered +  and solid +
slender +  and stout +
Eriogonum giganteum var. giganteum +
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 +