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Linum puberulum

Higher Taxonomy
Family: LinaceaeView DescriptionDichotomous Key

Common Name: FLAX FAMILY
Habit: Annual, perennial herb [shrub, tree, vine]. Stem: generally erect [climbing], branched, glabrous to hairy. Leaf: cauline, alternate to opposite or whorled, simple, generally sessile, linear to obovate, entire to minutely toothed or ciliate, teeth occasionally gland-tipped; stipules small, dark-colored, spheric glands, or 0. Inflorescence: raceme, panicle, or cyme [spike]. Flower: bisexual, radial; sepals [4]5, free; petals = sepals in number, free to adherent; stamens 5[4 or 10], alternate petals, filaments fused basally into a cup-like structure surrounding ovary base; staminodes present, alt stamens at cup rim, or 0; ovary superior, carpels 2--5, fused, styles 2--5, = carpel number, free or partly fused. Fruit: capsule, generally dehiscent [drupe in some tropical species], generally 10-seeded.
Genera In Family: 13 genera, +- 250 species: cosmopolitan, most temperate, some cultivated. Note: Hesperolinon, Sclerolinon are evolutionary lineages within Linum.
eFlora Treatment Author: Joshua R. McDill
Scientific Editor: Douglas H. Goldman, Robert Patterson, Bruce G. Baldwin.
Genus: LinumView DescriptionDichotomous Key

Common Name: FLAX
Habit: Annual, perennial herb. Leaf: generally alternate, occasionally partially opposite [whorled], +- sessile, generally glabrous; stipule glands present or 0. Inflorescence: raceme or cyme. Flower: inner 2 sepals overlapped by outer 3, all margins generally translucent, generally ciliate or toothed, glandular or not; petals 5--25 mm, generally ephemeral; staminodes 0 or 5; carpels 5, ovary chambers 10, styles free or fused, stigmas 5, >= style width. Fruit: 3--10 mm diam, generally spheric, dehiscent, generally 5 or 10 segmented. Seed: 5 or 10, lens-shaped, rounded, brown to black, generally glossy.
Species In Genus: +- 180 species: temperate & subtropics, especially Eurasia and North America. Etymology: (Latin: flax) Note: Linum usitatissimum cultivated for fiber (linen) and seed for oil and food; Linum perenne, Linum grandiflorum, ornamental; some Eurasian species used in cancer treatment.

Linum puberulum (Engelm.) A. Heller
Habit: Annual. Stem: 5--25 cm, puberulent. Leaf: generally alternate, basal leaves occasionally opposite; 5--20 mm, linear, entire to sparsely glandular-toothed; stipule glands present generally throughout. Flower: sepals 4--7 mm, lanceolate, acute-acuminate, generally puberulent, margins glandular-toothed; petals 10--15 mm, obovate, yellow to orange with red band at base; styles fused +- to tip, 3--7 mm. Fruit: <= 5 mm wide, dehiscent, segments 5, distinct, 2-seeded. Seed: 1.5--3 mm, brown. Chromosomes: n=15.
Ecology: Rocky, sandy areas; Elevation: 1000--2000 m. Bioregional Distribution: DMtns; Distribution Outside California: to Wyoming, Nebraska, Texas, northern Mexico. Flowering Time: May--Jul
eFlora Treatment Author: Joshua R. McDill
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Linum lewisii var. lewisii
Next taxon: Linum usitatissimum

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botanical illustration including Linum puberulum


Citation for this treatment: Joshua R. McDill 2016. Linum puberulum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 03, 2016.

Linum puberulum
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© 2010 James M. Andre
Linum puberulum
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© 2006 James M. Andre
Linum puberulum
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© 2010 James M. Andre
Linum puberulum
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© 2012 Keir Morse
Linum puberulum
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© 2012 Keir Morse
Linum puberulum
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© 2009 Christopher L. Christie

More photos of Linum puberulum in CalPhotos

Geographic subdivisions for Linum puberulum:
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.