Ceanothus diversifolius
Ceanothus herbaceus
pine mat
céanothe á feuilles étroites, inland Jersey tea, Jersey tea, New Jersey tea, prairie redroot
spreading, sometimes rooting at nodes;
branchlets green, sometimes tinged red, not thorn-tipped, usually round, sometimes angled, in cross section, flexible, puberulent.
petiole 3–11 mm;
blade flat, elliptic to widely ovate, 12–45 × 6–20 mm, base obtuse to rounded, margins serrulate to denticulate, not revolute, usually not wavy, sometimes wavy, teeth 27–42, apex ± obtuse to rounded, abaxial surface pale green, pilosulous, adaxial surface green, pilosulous; usually pinnately veined, rarely 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.
axillary, umbel-like to racemelike, 1.3–4 cm.
terminal, umbel-like, globose to hemispheric, 4–8 cm.
sepals, petals, and nectary usually blue to pale blue, rarely white.
sepals, petals, and nectary white.
4–5 mm wide, weakly lobed near apex;
valves smooth, crested.
3–5 mm wide, lobed;
valves smooth, usually not crested, sometimes weakly crested near apex.
Ceanothus diversifolius
Ceanothus herbaceus
Ceanothus diversifolius occurs in the North Coast Ranges and the western slopes of the Cascade Range and the Sierra Nevada; it often forms mats to two meters wide. Marginal teeth on young leaves are notable in having more or less persistent, narrowly conic glands, not seen elsewhere in Ceanothus.
(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.)
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