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Vascular Plants of California
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Eriastrum tracyi
TRACY'S WOOLLY-STAR, TRACY'S ERIASTRUM


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 tracyi H. Mason
NATIVE
Habit: Annual, 10--25 cm. Stem: erect, simple or branched above, lightly woolly. Leaf: 10--25 mm, woolly, entire to 3-lobed, lobes linear. Inflorescence: heads often clustered at stem tips, densely woolly, +- 1--5-flowered. Flower: calyx 5--9.5 mm, densely woolly, sinuses unequal, lobes subequal to strongly unequal; corolla (4.2)5.5--10.5 mm, sub-salverform to narrowly funnel-shaped, radial, tube 2.9--6.2 mm, reddish-purple to white, often with darker purplish ring just proximal to throat, throat 0.5--2 mm, white to yellow, tube + throat generally slightly < calyx, +- 2.8--7.6 mm, lobes 1.3--4 mm, +- 1/4 to 1/3 corolla length, light blue, pinkish, lavender, or white; stamens included 0.6 mm below corolla sinuses to exserted 1.3 mm past sinuses, attached at throat base (0.2)0.5--1.5(2) mm below sinuses, free portion +- 0.75--1.5 mm, equal, anthers 0.75--1 mm; pistil 4--6.5(7.1) mm, +- equal to stamens. Fruit: capsule 4--5 mm, oblong ellipsoid, 3-sided, seeds generally 1 or occasionally 2 per chamber. Seed: slimy when wetted, +- 1.8--3.2 mm, light gray-brown, elliptic to slightly ovate, occasionally angular.
Ecology: Shale barrens, open hillsides, ridge tops, flats, floodplains, dry washes, disturbed areas, generally in chaparral, grassland, savannah, woodland, forest; Elevation: 320--1610 m. Bioregional Distribution: KR, NCoRH, NCoRI, e CaRH, c&s SN, SnFrB, MP (ne Shasta Co.). Flowering Time: May--Jun Note: Threatened by habitat loss from agriculture and development. Probably a species complex; needs study.
Synonyms: Eriastrum brandegeeae H. Mason
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)
Listed on CNPS Rare Plant Inventory

Previous taxon: Eriastrum sparsiflorum
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Citation for this treatment: Sarah J. De Groot 2023, Eriastrum tracyi, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24598, accessed on June 22, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on June 22, 2024.

Eriastrum tracyi
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©2014 Chris Winchell
Eriastrum tracyi
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©2014 Steve Matson
Eriastrum tracyi
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©2014 Chris Winchell
Eriastrum tracyi
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©2021 Neal Kramer
Eriastrum tracyi
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©2012 Neal Kramer

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Geographic subdivisions for Eriastrum tracyi:
KR, NCoRH, NCoRI, e CaRH, c&s SN, SnFrB, MP (ne Shasta Co.).
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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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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).