Ceanothus sanguineus

Pursh

Fl. Amer. Sept. 1: 167. 1813.

Common names: Redstem ceanothus
Endemic
Synonyms: Ceanothus oreganus Nuttall
Treatment appears in FNA Volume 12. Treatment on page 83. Mentioned on page 81, 82.

Shrubs, deciduous, 1–2.5 m. Stems erect to ascending, not rooting at nodes; branchlets greenish to reddish-brown, not thorn-tipped, round in cross-section, flexible to ± rigid, puberulent, glabrescent. Leaves: petiole 6–25 mm; blade not aromatic, flat, ovate, ovate-elliptic, or widely elliptic, 25–100 × (17–) 20–60 mm, herbaceous, not resinous, base rounded or subcordate, margins serrulate, teeth 50–100+, apex acute to rounded, abaxial surface pale green, glabrous or puberulent, especially on veins, adaxial surface green, dull, glabrate; 3-veined from base. Inflorescences axillary, paniclelike, cylindric, 5–12 cm. Flowers: sepals and petals usually white to cream, sometimes pink-tinged; nectary cream. Capsules 4–5 mm wide, weakly lobed near apex; valves smooth, usually not crested, sometimes weakly crested.


Phenology: Flowering Apr–Jul.
Habitat: Open areas in forests, clear-cuts, rocky hillsides, slopes, prairies, burns.
Elevation: 0–1400 m.

Distribution

V12 944-distribution-map.jpg

B.C., Calif., Idaho, Mich., Mont., Oreg., Wash.

Discussion

Putative hybrids between Ceanothus sanguineus and C. velutinus have been reported from British Columbia and Oregon (H. McMinn 1944). The occurrence of C. sanguineus in the Upper Peninsula of Michigan (Keweenaw County) is a significant disjunction from the nearest locations in western Montana.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Ceanothus sanguineus"
puberulent +  and glabrous +
perigynous +  and epigynous +
Acute (?) +  and Rounded (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
subcordate +  and rounded +
3-veined +  and veined +
1.7 cm17 mm <br />0.017 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not resinous +
not gland-dotted +
2.5 cm25 mm <br />0.025 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
not aromatic +
elliptic;ovate-elliptic;elliptic;ovate-elliptic;ovate;flat +
20mm;60mm +
not thorn-tipped +
glabrescent +  and puberulent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Redstem ceanothus +
B.C. +, Calif. +, Idaho +, Mich. +, Mont. +, Oreg. +  and Wash. +
0–1400 m. +
Open areas in forests, clear-cuts, rocky hillsides, slopes, prairies, burns. +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
unisexual +  and bisexual +
cylindric +  and paniclelike +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
deciduous +  and persistent +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.6 cm6 mm <br />0.006 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering Apr–Jul. +
2-4-carpellate +
Fl. Amer. Sept. +
pink-tinged +, usually white +  and cream +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
not rooting +
erect +  and ascending +
3-veined +  and veined +
Ceanothus oreganus +
Ceanothus sanguineus +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
crested +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +