Ceanothus cyaneus |
Ceanothus herbaceus |
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lakeside ceanothus, San Diego buckbrush |
céanothe á feuilles étroites, inland Jersey tea, Jersey tea, New Jersey tea, prairie redroot |
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Habit | Shrubs, evergreen, 2–5 m. Stems erect, not rooting at nodes; branchlets light green, not thorn-tipped, angled in cross section, flexible, often tuberculate (tubercles minute, brownish), puberulent, glabrescent. | Shrubs, deciduous, 0.6–1 m. Stems erect to ascending, not rooting at nodes; branchlets green, brown, or reddish, not thorn-tipped, round in cross section, flexible, ± appressed-puberulent or villosulous, glabrescent. |
Leaves | petiole 2–6 mm; blade flat, ovate-elliptic, 20–50 × 15–20 mm, base rounded, margins usually denticulate to serrulate, rarely entire, not revolute, teeth 23–58, apex acute to obtuse, abaxial surface pale green, veins puberulent, adaxial surface dark green, glabrous or sparsely puberulent; 3-veined from base. |
petiole 2–6(–10) mm; blade not aromatic, flat, usually elliptic to lanceolate, sometimes ovate or oblanceolate, (20–)25–70 × 10–30 mm, herbaceous, not resinous, base cuneate to rounded, margins serrate to serrulate, teeth (37–)45–71, apex acute to obtuse, abaxial surface pale green, glabrous or puberulent, especially on veins, adaxial surface dark green, dull, villosulous or glabrate; 3-veined from base. |
Inflorescences | terminal, paniclelike, 15–30(–40) cm. |
terminal, umbel-like, globose to hemispheric, 4–8 cm. |
Flowers | sepals, petals, and nectary deep blue. |
sepals, petals, and nectary white. |
Capsules | 3–5 mm wide, deeply lobed; valves smooth, weakly crested. |
3–5 mm wide, lobed; valves smooth, usually not crested, sometimes weakly crested near apex. |
2n | = 24. |
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Ceanothus cyaneus |
Ceanothus herbaceus |
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Phenology | Flowering Apr–Jun. | Flowering Mar–Aug. |
Habitat | Rocky or gravelly slopes, chaparral. | Open rocky areas or on sandy soils, slopes and bluffs in shrublands, prairies, forests. |
Elevation | 40–600 m. (100–2000 ft.) | 10–1800 m. (0–5900 ft.) |
Distribution |
CA; Mexico (Baja California)
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AR; CO; IA; IL; IN; KS; KY; LA; MA; MI; MN; MO; MT; ND; NE; NH; NM; NY; OH; OK; SD; TN; TX; VA; VT; WI; WY; MB; ON; QC; Mexico (Coahuila)
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Discussion | Ceanothus cyaneus is known in the flora area only from San Diego County, and is threatened throughout its range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Ceanothus herbaceus is an older name than C. ovatus, which has been used widely in botanical and horticultural literature (G. K. Brizicky 1964c). Plants with persistently puberulent leaves occur principally east of the Mississippi River Valley and have been called var. pubescens, but the extent of intergradation occurs over a broad geographic area and deserves further study (N. C. Coile 1988). Putative hybrids between C. herbaceus and C. fendleri in the eastern foothills of the Rocky Mountains were named C. ×subsericeus Rydberg. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 90. | FNA vol. 12, p. 82. |
Parent taxa | Rhamnaceae > Ceanothus > subg. Ceanothus | Rhamnaceae > Ceanothus > subg. Ceanothus |
Sibling taxa | ||
Synonyms | C. herbaceus var. pubescens, C. ovatus, C. ovatus var. pubescens | |
Name authority | Eastwood: Proc. Calif. Acad. Sci., ser. 4, 16: 361. (1927) | Rafinesque: Med. Repos., hexade 2, 5: 360. (1808) |
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