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Vascular Plants of California
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Eriastrum calocyanum
PRETTY BLUE WOOLLY-STAR


Higher Taxonomy
Family: PolemoniaceaeView DescriptionDichotomous Key
Common Name: PHLOX FAMILY
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.
Eriastrum calocyanum De Groot
NATIVE
Habit: Annual, 4--25(37) cm. Stem: erect, sometimes branched above or from base, often zig-zag, woolly. Leaf: 7--35 mm, woolly, entire to 4-lobed, lobes linear to thread-like. Inflorescence: generally terminal, occasionally axillary, (1)3--8(17)-flowered, woolly. Flower: calyx 5.3--8 mm, densely woolly, lobes unequal to subequal; corolla 7--10.1 mm, radial, +- salverform, throat often noticeably flared, wider than tube, tube 3.8--5.3 mm, generally white to cream or yellow, throat 1--2 mm, white to yellow, tube plus throat 5--7 mm, generally slightly < calyx, lobes 2.3--4.2 mm, light blue or lavender to deep royal blue, often with a dark reddish or purplish spot at base; stamens exserted <= 2.3 mm beyond corolla sinus, attached 0.9--1.5 mm below sinus, free portion +- 1.5--3.5 mm, equal to unequal, anthers 0.75--1 mm; pistil 5--8.3 mm, exceeding anthers or not. Fruit: capsule +- 3--4 mm, oblong-ellipsoid, seed 1 per chamber. Seed: 2--2.5 mm, tan.
Ecology: Open benches along creeks, chaparral, mixed woodland; Elevation: 400--1300 m. Bioregional Distribution: SCoR, w SnJV. Flowering Time: May--Jun
Synonyms: Eriastrum wilcoxii, misapplied.
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 calocyanum, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=103302, accessed on February 24, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on February 24, 2024.

Eriastrum calocyanum
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©2018 Ryan O'Dell
Eriastrum calocyanum
click for enlargement
©2018 Ryan O'Dell
Eriastrum calocyanum
click for enlargement
©2018 Ryan O'Dell
Eriastrum calocyanum
click for enlargement
©2021 Ryan O'Dell
Eriastrum calocyanum
click for enlargement
©2021 Ryan O'Dell

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Geographic subdivisions for Eriastrum calocyanum:
SCoR, w SnJV.
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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 occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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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.
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CCH collections by month

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).