Canotia holacantha

Torrey ex A. Gray

in J. C. Ives, Rep. Colorado R. 4: 15. 1861.

Common names: Crucifixion thorn
Treatment appears in FNA Volume 12. Treatment on page 119.
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Shrubs or trees 2–5(–10) m. Stems many-branched, virgate, principal branches ascending, pale green. Flowers: sepals 2–4 mm; petals oblong, 4–5 × 2 mm; stamens 5, filaments as long as petals; styles united into beak. Capsules narrowly obovoid, 21–27 × 6–10 mm (including beak), opening from apex to middle. Seeds basally compressed. 2n = 30.

Phenology: Flowering spring to fall; fruiting late summer–winter, fruit persisting into spring.
Habitat: Open roadsides, deserts.
Elevation: 0–2000 m.


Canotia holacantha has been reported from Utah (J. R. Hastings et al. 1972; M. C. Johnston 1975), but was not included in A Utah Flora (S. L. Welsh et al. 1993, 2003); no corroborating specimens have been located.

Selected References


Lower Taxa

... more about "Canotia holacantha"
Jinshuang Ma +  and Geoffrey A. Levin +
Torrey ex A. Gray +
Crucifixion thorn +
Ariz. +  and Mexico (Sonora). +
0–2000 m. +
Open roadsides, deserts. +
Flowering spring to fall +  and fruiting late summer–winter, fruit persisting into spring. +
in J. C. Ives, Rep. Colorado R. +
Illustrated +
Canotia holacantha +
species +