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Vascular Plants of California
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Eriastrum sapphirinum subsp. dasyanthum


Higher Taxonomy
Family: PolemoniaceaeView DescriptionDichotomous Key
Habit: Annual, perennial herb, shrub, vine. Leaf: simple or compound, cauline (or most basal), alternate or opposite; stipules 0. Inflorescence: cymes, heads, clusters, or flower 1; bracts in involucres or not. Flower: sepals generally 5, fused at base, translucent membrane generally connecting lobes, torn by fruit; corolla generally 5-lobed, radial or bilateral, salverform to bell-shaped, throat often well defined; stamens generally 5, epipetalous, attached at >= 1 level, filaments of >= 1 length, pollen white, yellow, blue, or red; ovary superior, chambers generally 3, style 1, stigmas generally 3. Fruit: capsule. Seed: 1--many, when wetted swelling or not, gelatinous or not.
Genera In Family: 26 genera, 314 species: America, northern Europe, northern Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox). Note: Leptodactylon moved to Linanthus.
eFlora Treatment Author: Robert W. Patterson, family description, key to genera, except as noted
Scientific Editor: Robert W. Patterson, Thomas J. Rosatti.
Genus: EriastrumView DescriptionDichotomous Key

Common Name: WOOLLY-STAR
Habit: Annual, perennial, or subshrub; often woolly, glandular or not. Stem: generally erect, branching from base or above, sometimes unbranched. Leaf: cauline, alternate, entire to pinnately lobed; lobes generally linear or lanceolate. Inflorescence: terminal, head-like or flower occasionally 1, bracted, lightly to densely woolly; bracts leaf-like; flowers sessile or subsessile. Flower: calyx lobes equal to unequal, lightly to densely woolly, sometimes glandular-puberulent; corolla funnel-shaped to salverform, radial or bilateral, white or blue to purple or yellow; stamens fused to corolla at base, equal or unequal, anthers sagittate, pollen white to blue; ovary 3-chambered, style included or exserted, stigma 3-lobed. Fruit: capsule loculicidal. Seed: 1--11 per chamber.
Etymology: (Greek: woolly star)
eFlora Treatment Author: Sarah J. De Groot
Reference: De Groot 2016 Aliso 34(2):25--152.
Species: Eriastrum sapphirinumView Description 

Habit: Annual, 3--54 cm, erect to spreading, simple or branched from base or above. Stem: herbage viscid-glandular-hairy on upper stems or throughout, subglabrous to white-woolly, often subglabrous in age. Leaf: 4--44(55) mm, glabrous to woolly, glandular or not, entire to 5-(rarely 7-)lobed near base, lobes linear. Inflorescence: heads terminal (rarely axillary), generally 1 per branch, subglabrous to densely woolly, 1--12-flowered, peduncles generally glandular; bracts glandular, sparsely to densely woolly. Flower: calyx 4--8.5 mm, glandular-puberulent, lightly to densely woolly, lobes subequal to unequal; corolla 7--15 mm, broadly funnel-shaped to sub-salverform, radial to somewhat bilateral, tube 2.3--6.1 mm, +- 1/4 or 1/3 corolla length, white to light purple or blue, throat 0.5--3.5 mm, sometimes asymmetric with upper side > lower from differing heights of sinuses, white to purple, sometimes with yellow patches or dots, tube + throat 3--7.7 mm, lobes 3.5--8.3(10) mm, +- 1/3 to almost 2/3 corolla length, lavender, dark to pale blue, white, cream, or occasionally pale yellow, veins sometimes darker, often with dark blue or purple or reddish spots or streaks, abaxial lobes sometimes pale yellow; stamens exserted +- 2.3--5.9(7) mm past corolla sinuses, +- 2.0 mm < corolla lobes to +- 1 mm longer, attached (0.3)0.7--4 mm below sinuses, free portion 5--10 mm, equal to unequal, filaments white to blue to purple, bases sometimes yellow, anthers 1.5--3.25 mm; pistil 8--13 mm, equal to or slightly > stamens, ovules (1)2--7 per ovary chamber. Fruit: capsule 3--5 mm, broadly elliptic, seeds generally 1--4 per chamber, other ovules present but abortive. Seed: +- 1.2--2.4 mm, tan to gray-brown, elliptic to angular.

Eriastrum sapphirinum (Eastw.) H. Mason subsp. dasyanthum (Brand) H. Mason
Habit: Annual, 3--54 cm. Stem: generally much-branched from base and above, often stout, often with axillary shoots, upper stems glandular and woolly, lower stems woolly, subglabrous in age. Leaf: 7--40(55) mm, glabrous to woolly, generally slightly glandular-hairy, entire to 5-lobed, lobes linear. Inflorescence: heads terminal, occasionally axillary, densely woolly, (3)5--10-flowered; bracts glandular-hairy, woolly. Flower: calyx 5.5--7 mm, woolly, lobes subequal to slightly unequal; corolla 9.2--15 mm, narrowly funnel-shaped, +- radial, tube 4.1--6.1 mm, slightly > 1/3 corolla length, white to light purplish, throat 0.8--2.5 mm, white to purple, sometimes yellow, tube + throat 5.6--7.7 mm, lobes 3.5--7.0 mm, slightly > 1/3 to 1/2 corolla length, light- to royal-blue or dark purple, sometimes with a yellow or white spot, veins sometimes darker, occasionally a few individuals pale blue to white-lobed in otherwise royal-blue-lobed stand; stamens exserted 2.3--5.2 mm past corolla sinuses, 0.8--2 mm < lobes, attached +- (0.7)1(2.6) mm below sinuses, free portion 5--8 mm, subequal to slightly unequal, anthers 1.5--3 mm; pistil 9--13 mm, generally slightly > stamens, ovules 4--7 per ovary chamber. Fruit: capsule 3--5 mm, seeds 1--4 per chamber. Seed: slimy when wetted, +- 1.2--2.0 mm, tan to light brown, mostly angular, occasionally elliptic. Chromosomes: 2n=14.
Ecology: Open areas on alluvial plains, flats, gentle slopes, benches above washes, meadows, disturbed areas, in grassland, scrub, chaparral, mixed forest; Elevation: 90--2400 m. Bioregional Distribution: SW (exc ChI); Distribution Outside California: Baja California. Flowering Time: Apr--Aug
Jepson eFlora Author: Sarah J. De Groot
Reference: De Groot 2016 Aliso 34(2):25--152.
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Sarah J. De Groot 2023, Eriastrum sapphirinum subsp. dasyanthum, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12,, accessed on July 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on July 16, 2024.

Eriastrum sapphirinum subsp. dasyanthum
click for image enlargement
©2015 Keir Morse
Eriastrum sapphirinum subsp. dasyanthum
click for image enlargement
©2015 Keir Morse
Eriastrum sapphirinum subsp. dasyanthum
click for image enlargement
©2015 Keir Morse
Eriastrum sapphirinum subsp. dasyanthum
click for image enlargement
©2015 Keir Morse
Eriastrum sapphirinum subsp. dasyanthum
click for image enlargement
©2015 Keir Morse

More photos of Eriastrum sapphirinum subsp. dasyanthum
in CalPhotos

Geographic subdivisions for Eriastrum sapphirinum subsp. dasyanthum:
SW (exc ChI)
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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 occurrence).


Data provided by the participants of the  Consortium of California Herbaria.

View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).