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Arnica lanceolata subsp. prima
CLASPING ARNICA

Higher Taxonomy
Family: Asteraceae (Compositae)View DescriptionDichotomous Key

Common Name: SUNFLOWER FAMILY
Habit: Annual to tree. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. Inflorescence: 1° inflorescence a head, resembling a flower, of several types (see below), 1--many in generally +- cyme-like cluster; each head generally with +- calyx-like involucre of 1--many series of phyllaries (involucre bracts); receptacle of head flat to conic or columnar, paleate (bearing paleae = receptacle bracts) or epaleate; flowers 1--many per head. Flower: bisexual, unisexual, or sterile, +- small, of several types (see below); calyx 0 or modified into +- persistent pappus of bristles, scales, and/or awns; corolla radial or bilateral (0), lobes generally (0)3--5; stamens 4--5, filaments generally free, generally fused to corolla at tube/throat junction, anthers generally fused into cylinder around style, anther base generally rounded or cordate (deeply sagittate or with tail-like appendages), tip (= flattened appendage) generally projecting beyond pollen sac; pistil 1, 2-carpeled, ovary inferior, 1-chambered, 1-seeded, placenta basal, style 1, tip generally +- 2-branched (except in some staminate disk flowers), branch tips truncate or generally bearing +- brush-like appendages; stigmas 2, generally on adaxial faces of style branches. Fruit: achene (also called a cypsela) (drupe in Chrysanthemoides), cylindric to ovoid, sometimes compressed, generally deciduous with pappus attached.
Genera In Family: +- 1500 genera, 23000 species: worldwide, many habitats. Note: Flower and head types differ in form and sexual condition. A disk flower has a generally radial corolla, with a cylindric tube, expanded throat, and generally 5 lobes. Disk flowers are generally bisexual and fertile but occasionally staminate with reduced ovaries. Discoid heads comprise only disk flowers. A radiant head is a variant of a discoid head, with peripheral disk flower corollas expanded, often bilateral. A ray flower corolla is bilateral, generally with a slender tube and flattened petal-like ray (single lip composed of generally 3 lobes). Ray flowers are generally pistillate or sterile (occasionally lacking styles). Radiate heads have peripheral ray flowers and central disk flowers. Disciform heads superficially resemble discoid heads, with pistillate or sterile flowers that lack rays, together with or separate from disk flowers. A ligulate flower is bisexual, with a bilateral, generally ephemeral corolla and 5-lobed ligule. Liguliflorous heads comprise only ligulate flowers. See glossary p. 31 for illustrations of family characteristics. Echinops sphaerocephalus L., Gaillardia aristata Pursh, Gaillardia pulchella Foug., Hymenothrix loomisii S.F. Blake, Tagetes erecta L., Thelesperma megapotamicum (Spreng.) Kuntze are waifs. Melampodium perfoliatum Kunth, historic urban waif. Ageratum conyzoides L., Guizotia abyssinica (L. f.) Cass., Santolina chamaecyparisus L., orth. var. are rare or uncommon escapes from cultivation. Dyssodia papposa, Ismelia carinata (Schousb.) Sch. Bip. [Chrysanthemum carinatum Schousb.], Mantisalca salmantica (L.) Briq. & Cavill. are historical or extirpated waifs in California. Inula helenium L. not documented in California. Taxa of Aster in TJM (1993) treated here in Almutaster, Eucephalus, Eurybia, Ionactis, Oreostemma, Sericocarpus, Symphyotrichum; Chamomilla in Matricaria; Cnicus in Centaurea; Conyza in Erigeron and Laennecia; Dugaldia in Hymenoxys; Erechtites in Senecio; Hymenoclea in Ambrosia; Lembertia in Monolopia; Osteospermum ecklonis in Dimorphotheca; Picris echioides in Helminthotheca; Prionopsis in Grindelia; Raillardiopsis in Anisocarpus and Carlquistia; Schkuhria multiflora in Bahia; Trimorpha in Erigeron; Venidium in Arctotis; Whitneya in Arnica. Taxa of Arida in TJM2 (2012) treated here in Leucosyris.
Unabridged Note: Largest family of vascular plants in California and of eudicots globally.
eFlora Treatment Author: David J. Keil, except as noted
Scientific Editor: David J. Keil, Bruce G. Baldwin.
Genus: ArnicaView DescriptionDichotomous Key

Habit: Perennial herb, generally from long, naked rhizome. Leaf: basal 0 or generally withered by flowering, or present as sterile rosettes; cauline opposite. Inflorescence: heads radiate or discoid (radiant), 1--many in +- flat-topped clusters; generally erect in bud (nodding); involucre hemispheric to obconic; phyllaries generally in 2 +- equal series; receptacle +- flat, epaleate. Ray Flower: 0 or 5--22; ray yellow or yellow-orange. Disk Flower: many, generally bisexual; corolla generally soft-hairy, generally colored like rays; anther tip triangular; style branches flat, tips truncate, short-hair-tufted. Fruit: +- cylindric, 5--10-veined; pappus (0 or) of many barbed to +- plumose bristles, white to red-brown.
Species In Genus: 29 species: North America, Eurasia. Etymology: (Latin or Greek: ancient name) Note: Diploid species sexual; polyploid species generally form seeds asexually.
eFlora Treatment Author: Steven J. Wolf & Theodore M. Barkley

Arnica lanceolata Nutt. subsp. prima (Maguire) Strother & S.J. Wolf
NATIVE
Habit: Plant 5--8 dm from short rhizome or caudex, generally hairy and glandular, especially distally. Stem: 1--few, sometimes branched distal to middle. Leaf: basal petioled; cauline 4--10 pairs, +- sessile, 4--12 cm, narrowly lanceolate or oblanceolate, +- toothed. Inflorescence: heads radiate, 3--10; involucre 8--15 mm, bell-shaped or widely obconic; phyllaries narrowly lanceolate, +- acute, +- equally hairy throughout. Ray Flower: 7--17; ray 10--20 mm. Disk Flower: corolla sparsely soft-hairy, tube generally 2--3 mm. Fruit: 4--8 mm, sparsely hairy, sometimes glandular; pappus +- plumose, +- brown. Chromosomes: 2n=38,57,76.
Ecology: Moist areas, along stream banks, snow-melt areas, montane to alpine meadows; Elevation: 2200--3500 m. Bioregional Distribution: KR, CaRH, SNH, SNE; Distribution Outside California: to southern Alaska, Wyoming. Flowering Time: Jul--Aug Note: Generally asexual. Other variety in northeastern North America.
Synonyms: Arnica amplexicaulis Nutt.
eFlora Treatment Author: Steven J. Wolf & Theodore M. Barkley
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Citation for this treatment: Steven J. Wolf & Theodore M. Barkley 2016. Arnica lanceolata subsp. prima, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=82177, accessed on May 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 05, 2016.


Arnica lanceolata subsp. prima
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© 2014 Steve Matson
Arnica lanceolata subsp. prima
click for enlargement
© 2014 Steve Matson
Arnica lanceolata subsp. prima
click for enlargement
© 2014 Steve Matson
Arnica lanceolata subsp. prima
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© 2009 Keir Morse
Arnica lanceolata subsp. prima
click for enlargement
© 2014 Steve Matson
Arnica lanceolata subsp. prima
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© 2013 Dana York

More photos of Arnica lanceolata subsp. prima in CalPhotos


Geographic subdivisions for Arnica lanceolata subsp. prima:
KR, CaRH, SNH, SNE;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.