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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)

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 2016. Tuberaria guttata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 02, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 02, 2016.

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. 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.
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.