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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 2017. Linum puberulum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 24, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on July 24, 2017.

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

More photos of Linum puberulum in CalPhotos

Geographic subdivisions for Linum puberulum:
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.