Ceanothus gloriosus

J. T. Howell

Leafl. W. Bot. 2: 43. 1937.

Endemic
Treatment appears in FNA Volume 12. Treatment on page 102. Mentioned on page 78, 94, 95, 97.

Shrubs, 0.1–3 m, matlike to moundlike. Stems prostrate, spreading, ascending, or erect, sometimes rooting at proximal nodes; branchlets green to brown or reddish-brown, flexible to rigid, strigillose or tomentulose. Leaves not fascicled, not crowded; petiole 1–4 mm; blade flat to ± cupped or folded lengthwise adaxially, widely elliptic, obovate, or suborbiculate, 10–40 (–45) × 5–24 mm, base cuneate to ± rounded, margins not revolute, sometimes slightly thickened, dentate to denticulate most of length, teeth 9–35, apex rounded, truncate, or retuse, abaxial surface pale green, sparsely strigillose or glabrate, adaxial surface dark green, ± shiny, glabrous. Inflorescences axillary, 0.9–2.5 cm. Flowers: sepals, petals, and nectary deep blue to bluish purple. Capsules 4–6 mm wide, lobed; valves usually smooth, sometimes rugulose or crested distal to middle, horns subapical, minute, not rugose, intermediate ridges absent.

Discussion

Varieties 3 (3 in the flora).

Ceanothus gloriosus is composed of three varieties occurring along the northern California coast from Humboldt County to Marin County. Variety gloriosus and var. porrectus generally differ primarily by leaf shape, length and width, and the number of marginal teeth. Variety exaltatus differs from the other two varieties primarily in stature. Complex hybrids with C. cuneatus var. ramulosus, C. divergens, and C. sonomensis were studied by J. T. Howell (1940).

Selected References

None.

Key

1 Shrubs 0.8–3 m; stems erect to ascending. Ceanothus gloriosus var. exaltatus
1 Shrubs 0.1–0.5 m; stems prostrate to spreading. > 2
2 Leaf blades widely obovate to suborbiculate, 23–31(–45) × 17–24 mm, marginal teeth 13–31. Ceanothus gloriosus var. gloriosus
2 Leaf blades elliptic, obovate, or narrowly obovate, 10–21 × 5–15 mm, marginal teeth 9–19. Ceanothus gloriosus var. porrectus

"thick" is not a number.

... more about "Ceanothus gloriosus"
glabrate +  and strigillose +
perigynous +  and epigynous +
Retuse (?) +, Truncate (?) +  and Rounded (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
J. T. Howell +
4 cm40 mm <br />0.04 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
suborbiculate +, obovate +  and elliptic +
5mm;24mm +
Ceanothus sect. Cerastes +
3-veined +  and veined +
not gland-dotted +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
cuneate;more or less rounded +
not thorn-tipped +
tomentulose +  and strigillose +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
subapical +
not rugose +
minute +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
unisexual +  and bisexual +
0.9 cm9 mm <br />0.009 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
not crowded +
deciduous +  and persistent +
dentate;denticulate +
blue;bluish purple +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2-4-carpellate +
Leafl. W. Bot. +
intermediate +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
erect +, ascending +, spreading +  and prostrate +
Ceanothus gloriosus +
Ceanothus subg. Cerastes +
species +
paniclelike +  and racemelike +
not gland-tipped +
distal +  and middle +
rugulose +
unarmed +  and armed +
shrub +  and matlike +
polygamous +, dioecious +  and synoecious +