Jepson eFlora: Taxon page
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Hesperolinon drymarioides

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: HesperolinonView DescriptionDichotomous Key

Habit: Annual, erect, 3--50 cm, generally branched (at least in inflorescence). Leaf: generally alternate (occasionally opposite or whorled), generally sessile, 4--35 mm, 1--3(6) mm wide, thread-like or linear to ovate or obovate, margin gland-toothed or entire; stipular glands present or 0. Inflorescence: generally open or dense cyme, bracted; pedicel thread-like, generally ascending to erect. Flower: sepals lanceolate to ovate, acute or acuminate, glabrous or hairy, or margins glandular-ciliate; petals free, 1--12 mm, yellow, white, or pink, generally with small appendages near base; staminodes 0; carpels 2--3, stigmas linear (+- = style in width). Fruit: smooth. Seed: +- triangular in ×-section, acute.
Species In Genus: 12--13 species: especially California, often on serpentine. Etymology: (Greek, Latin: western flax) Note: Hesperolinon serpentinum, used in TJM (1993), is not validly published.

Hesperolinon drymarioides (Curran) Small
Habit: Plant 5--25 cm. Leaf: proximal whorled (generally in 4s), distal alternate or +- opposite; ovate, flat, entire; surfaces, margins stalked-glandular. Inflorescence: few-branched; pedicels 1--5(10) mm. Flower: sepals 2.5--4 mm; petals 3--6 mm, white to pink, darker-veined, reflexed; stamens 3.5--5 mm, anthers white (purple, white-margined); ovary chambers 6, styles 3, 2--3.5 mm, +- white.
Ecology: Serpentine, chaparral or woodland; Elevation: 100--1000 m. Bioregional Distribution: c NCoRI (Colusa, Glenn, Lake cos.), NCoRH. Flowering Time: May--Jul
Synonyms: Linum drymarioides Curran
eFlora Treatment Author: Joshua R. McDill
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Hesperolinon disjunctum
Next taxon: Hesperolinon micranthum

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botanical illustration including Hesperolinon drymarioides


Citation for this treatment: Joshua R. McDill 2017. Hesperolinon drymarioides, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on March 28, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on March 28, 2017.

Hesperolinon drymarioides
click for enlargement
© 1998 John Game
Hesperolinon drymarioides
click for enlargement
© 1998 John Game
Hesperolinon drymarioides
click for enlargement
© 1998 John Game

More photos of Hesperolinon drymarioides in CalPhotos

Geographic subdivisions for Hesperolinon drymarioides:
c NCoRI (Colusa, Glenn, Lake cos.), NCoRH.
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

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