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Tuberaria guttata

Higher Taxonomy
Family: CistaceaeView DescriptionDichotomous Key

Habit: Annual to shrub, aromatic, of sunny areas, often sandy or chalky substrates; hairs nonglandular, in stellate clumps or not, peltate or not, and/or glandular. Leaf: simple, alternate or opposite [whorled], often +- reduced, entire or not, petioled or not, stipuled or not. Inflorescence: raceme- or panicle-like cymes or flowers 1. Flower: generally bisexual, +- radial; sepals 3 or 5 (outer 2 often narrower), free or fused at very base, often persistent in fruit, 3 twisted in direction opposite that of petals; petals [0(3)]4--5, generally ephemeral; stamens (3--10) many, free, often sensitive to touch, +- persistent in fruit or not; ovary superior, chambers 1 (or +- 3--12 from intruded parietal placentas), style 0--1, stigma 1(3), lobes 0 or 3--12. Fruit: loculicidal capsule, valves 3--12. Seed: [1--]3--many.
Genera In Family: 8 genera, +- 175 species: temperate, especially southeastern United States, Mediterranean; some cultivated (Cistus; Crocanthemum; Tuberaria). Note: Flowers open in sunshine for < 1 day. Taxa of Helianthemum in TJM2 treated here in Crocanthemum.
eFlora Treatment Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin, except as noted
Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Genus: TuberariaView Description 

Habit: Annual [perennial herb]; hairs nonglandular, spreading, long, white, red below or not, or some hairs short, red. Stem: erect. Leaf: basal in rosette, often withering early; proximal cauline generally opposite, distal 0--few, alternate; petioled or not; stipuled or not. Inflorescence: raceme-like. Flower: sepals 5, persistent, outer 2 generally narrower; petals 5, yellow; stamens 10--many; style 0, stigma large, hemispheric. Fruit: valves 3.
Species In Genus: 8--12 species: Europe, northern Africa. Etymology: (Latin: from tuber-like swellings on roots)
eFlora Treatment Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin

Tuberaria guttata (L.) Fourr.
Stem: 5--40 cm. Leaf: 1--6 cm, +- linear, wider below; margin +- rolled under or not. Flower: pedicel 7--15 mm, slender; petals 7--10 mm, generally with red to purple near base. Chromosomes: 2n=36.
Ecology: Uncommon. Disturbed places; Elevation: 80--150 m. Bioregional Distribution: n&c SNF, e edge ScV; Distribution Outside California: native to Europe, northern Africa. Flowering Time: Apr--May Note: Cleistogamous flowers, possibly without petals, sometimes form, set fruit.
Synonyms: Helianthemum guttatum (L.) Mill.
Unabridged Note: According to Ellen Dean (Curator, UC Davis Center for Plant Diversity), specimen documenting occurrence in ScV is correctly identified, although collected from a habitat more foothill than valley.
eFlora Treatment Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin
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botanical illustration including Tuberaria guttata


Citation for this treatment: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin 2017. Tuberaria guttata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 21, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 21, 2017.

Tuberaria guttata
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© 2000 George W. Hartwell

More photos of Tuberaria guttata in CalPhotos

Geographic subdivisions for Tuberaria guttata:
n&c SNF, e edge ScV;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.