Flora of North America species comparison

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Ceanothus fendleri

Fendler buckbrush, Fendler's ceanothus
Habit Shrubs, evergreen, 0.5–1.5 m. Stems erect, ascending, or spreading, rooting at proximal nodes; branchlets green to grayish green, thorn-tipped, round in cross section, rigid, canescent, often glaucous.
Leaves

petiole 1–4 mm;

blade flat, elliptic, ovate, or orbiculate, 8–25(–30) × 3–8(–14) mm, base cuneate to rounded, margins usually entire, rarely serrulate near apex, teeth 3–7, apex obtuse to rounded, abaxial surface pale green or grayish green and glaucous, appressed-villosulous to tomentulose, especially along veins, adaxial surface dark green, dull, appressed-villosulous or glabrous; 3-veined from base (lateral veins sometimes obscure).
Inflorescences

terminal or axillary, usually umbel-like, sometimes racemelike, 1–3.5 cm.
Flowers

sepals, petals, and nectary white or pinkish.
Capsules

4–6 mm wide, lobed;

valves smooth to rugose, viscid, usually not crested, sometimes weakly crested.

Ceanothus fendleri
Phenology Flowering Jan–Jul.
Habitat Rocky soils, slopes, open sites, chaparral, oak-pine woodlands, conifer forests.
Elevation 1400–2700 m. (4600–8900 ft.)
Distribution
from FNA
AZ; CO; NM; SD; TX; UT; WY; Mexico (Chihuahua, Coahuila, Sonora)
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[BONAP county map]
Discussion

Plants of Ceanothus fendleri with glabrous leaves found throughout its range have been called var. viridis. The name C. fendleri var. venosus has been applied to plants with widely elliptic, villosulous leaf blades. Such plants are similar to C. buxifolius of northern Mexico (Chihuahua and Sonora), which has glabrous or sparsely puberulent leaf blades and ± persistent glands on denticulate leaf margins. Putative hybrids between C. fendleri and C. herbaceus 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. 87.
Parent taxa Rhamnaceae > Ceanothus > subg. Ceanothus
Sibling taxa
C. americanus, C. arboreus, C. arcuatus, C. confusus, C. cordulatus, C. crassifolius, C. cuneatus, C. cyaneus, C. dentatus, C. divergens, C. diversifolius, C. ferrisiae, C. foliosus, C. fresnensis, C. gloriosus, C. griseus, C. hearstiorum, C. herbaceus, C. impressus, C. incanus, C. integerrimus, C. jepsonii, C. lemmonii, C. leucodermis, C. maritimus, C. martini, C. masonii, C. megacarpus, C. microphyllus, C. oliganthus, C. ophiochilus, C. otayensis, C. palmeri, C. papillosus, C. parryi, C. parvifolius, C. pauciflorus, C. perplexans, C. pinetorum, C. prostratus, C. pumilus, C. purpureus, C. roderickii, C. sanguineus, C. sonomensis, C. spinosus, C. thyrsiflorus, C. tomentosus, C. velutinus, C. verrucosus
Synonyms C. fendleri var. venosus, C. fendleri var. viridis
Name authority A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 29. (1849)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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