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Vascular Plants of California
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Chorizanthe palmeri
PALMER'S SPINEFLOWER


Higher Taxonomy
Family: PolygonaceaeView DescriptionDichotomous Key
Common Name: BUCKWHEAT FAMILY
Habit: Annual to shrub [tree]. Stem: nodes swollen or not. Leaf: simple, basal or cauline, generally alternate; ocreae present or 0, generally scarious, persistent or not. Inflorescence: flower clusters in axillary to terminal cyme-, panicle-, raceme-, spike-, umbel- or head-like arrangements, entire inflorescence or main inflorescence branches generally subtended by bracts ("inflorescence bracts"); peduncles present or 0; flower clusters in Eriogoneae-Eriogonoideae subtended by involucre of >= 1 free or +- fused, sometimes awn-tipped bracts ("involucre bracts") or, in Polygonoideae and rarely in Eriogonoideae, not (if bracts completely fused, involucre "tubular"); pedicels in Eriogoneae each often subtended by 2 free, transparent, linear bractlets or in Polygonoideae all subtended by 2+ fused, membranous, wide bractlets. Flower: generally bisexual, small, 1--200 per node; perianth parts 2--6, generally in 2 whorls, free or basally fused, generally petal-like, often +- concave adaxially, often darker at midvein, often turning +- red or +- brown in age; stamens [1]3 or 6--9 in 2 whorls; ovary superior, 1-chambered, ovule 1, styles 1--3. Fruit: achenes, included in or exserted from perianth, generally 3-angled, ovoid or elliptic, generally glabrous.
Genera In Family: 48 genera, +- 1200 species: worldwide, especially northern temperate; some cultivated for food (Coccoloba, sea-grape; Fagopyrum, Rheum, Rumex) or ornamental (Antigonon, lovechain; Coccoloba; Muehlenbeckia; Persicaria; Polygonum), a few timbered (Coccoloba; Triplaris). Several (Emex; Fallopia; Persicaria; Polygonum; Rumex) are weeds. Note: Treatment of genera in Eriogonoideae based on monographic work of James L. Reveal. Involucre number throughout is number (1--many) per ultimate grouping, at tips of ultimate branches; flower number is per flower cluster or involucre, unless otherwise stated. Fagopyrum esculentum Moench not naturalized, considered an historical waif (or garden weed +- presently), therefore not treated.
eFlora Treatment Author: Mihai Costea, except as noted
Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Genus: ChorizantheView DescriptionDichotomous Key


Common Name: SPINEFLOWER
Habit: Annual [perennial herb], generally hairy. Stem: branches basal or from erect stem, prostrate or decumbent to ascending. Leaf: all basal or basal and cauline, alternate except for bracts, awnless; ocreae 0. Inflorescence: cyme-like, open to +- congested; axes generally 3 from plant base or proximalmost branching node of erect stem, equally or unequally forked; bracts opposite or whorled, entire, generally in whorl of 3 at proximalmost branching node, not distinguishable from basal leaves in plants branched from base, distal generally opposite, proximal leaf-like or some or all scale-like to linear, needle-like, awnless or distal often all awned; involucres sessile, generally solitary at axis forks, distally in loose to dense clusters; involucre tubular, 3--6-ribbed, lobes 3, 5, or 6, equally or unequally awned, awns straight or hooked; involucres at forks often differing from those in clusters. Flower: 1(2) per involucre; pedicel short, included in involucre; perianth glabrous or hairy, white, yellow, pink, maroon, or purple, sometimes 2-colored, lobes (5)6, entire, minutely toothed, or fringed, tip acute, rounded, notched, or 2-lobed; stamens generally 3, 6, or 9. Fruit: generally brown or black, generally ellipsoid, glabrous; embryo straight or curved.
Species In Genus: +- 50 species: temperate western North America; southwestern South America. Etymology: (Greek: divided flower, for perianth lobes) Note: Involucre length measurements include lobes and awns unless otherwise specified. Chorizanthe minutiflora and C. aphanantha newly described, added; C. eastwoodiae segregated from C. angustifolia.
eFlora Treatment Author: James L. Reveal, Thomas J. Rosatti, David Gowen & David J. Keil
Reference: Morgan et al. 2014 Phytoneuron 2014-63:1--9; Nelson et al. 2018 Madroño 65:184--191; Gowen & Johnson 2020 Phytotaxa 455(1):1--8.
Chorizanthe palmeri S. Watson
NATIVE
Habit: Plant generally erect, (0.5--)1--3(--4) dm, hairy. Stem: branches generally from erect stem, ascending. Leaf: all basal or basal and cauline; blades 1--3 cm, 0.4--0.8 cm wide, oblanceolate. Inflorescence: axes unbranched or sparingly forked; bracts often a whorl of 3--5 at node proximal to branching node, otherwise generally opposite, proximal leaf-like, distal narrowly linear, awns 1--3 mm, straight; clusters dense, rounded to flat-topped; involucre 3-angled, 6-ribbed, tube 3.5--4 mm, +- swollen, +- transversely ridged, lobes 6, 1--2 mm, alternately longer and shorter, abaxial longest, margins not scarious, awns 0.5--1 mm, generally all +- hooked. Flower: 1; perianth 4--5 mm, glabrous or hairy, tube white to yellow, lobes light to dark purple, outer erect to spreading, oblong to +- round, entire, inner erect, shorter, +- ovate, truncate to deeply 2-lobed, fringed; stamens 9. Fruit: 3--3.5 mm. Chromosomes: n=19,20(24).
Ecology: Serpentine; Elevation: 60--700 m. Bioregional Distribution: SCoRO (w Monterey, w San Luis Obispo cos.). Flowering Time: May--Aug
Jepson eFlora Author: James L. Reveal, Thomas J. Rosatti, David Gowen & David J. Keil
Reference: Morgan et al. 2014 Phytoneuron 2014-63:1--9; Nelson et al. 2018 Madroño 65:184--191; Gowen & Johnson 2020 Phytotaxa 455(1):1--8.
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Botanical illustration including Chorizanthe palmeri

botanical illustration including Chorizanthe palmeri

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Citation for this treatment: James L. Reveal, Thomas J. Rosatti, David Gowen & David J. Keil 2022, Chorizanthe palmeri, in Jepson Flora Project (eds.) Jepson eFlora, Revision 10, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=19345, accessed on August 15, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on August 15, 2022.

Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell
Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell
Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell
Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell
Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell
Chorizanthe palmeri
click for enlargement
© 2011 Chris Winchell

More photos of Chorizanthe palmeri in CalPhotos



Geographic subdivisions for Chorizanthe palmeri:
SCoRO (w Monterey, w San Luis Obispo cos.).
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).