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POLEMONIACEAE PHLOX FAMILY

Robert Patterson, family description, key to genera

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.
26 genera, 314 species: America, northern Europe, northern Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox). [Porter & Johnson 2000 Aliso 19:55–91] Leptodactylon moved to Linanthus. —Scientific Editors: Robert Patterson, Thomas J. Rosatti.

Key to Polemoniaceae

ERIASTRUM

Sarah De Groot, David Gowen & Robert Patterson

Glabrous to woolly, glandular or not. Stem: generally erect. Leaf: cauline, alternate, generally pinnate-lobed or simple; lobes generally linear or lanceolate. Inflorescence: head-like, bracted, generally densely woolly; bracts leaf-like; flowers sessile. Flower: calyx lobes unequal, generally woolly; corolla radial or bilateral, funnel-shaped to salverform; stamens equal or not, anthers generally sagittate, pollen white or blue; style included or exserted. Seed: 1–several per chamber.
16 species: western North America. (Greek: woolly star) [Harrison 1972 Brigham Young Univ Sci Bull, Biol Ser 16:1–26] Apparently much undescribed variation; genus being revised. Key to species by David Gowen, Sarah De Groot.

Key to Eriastrum

E. eremicum (Jeps.) H. Mason subsp. eremicum
NATIVE
Annual. Stem: 5–30 cm. Leaf: 5–55 mm; lobes 2–7, ± glabrous to woolly. Flower: corolla 11–18 mm, generally bilateral, tube 4–9 mm, blue or yellow, throat 3–3.5 mm, generally yellow, lobes 4–8 mm, light to dark blue, sinuses unequal; stamens attached in upper tube or lower throat, 2–9 mm, generally unequal, bent toward lower corolla lip, exserted.
2n=14. Open areas in sandy soils; < 1800 m. East of Sierra Nevada, Desert; to Utah, Arizona. Other subsp. in Arizona. Apr–Jun [Online Interchange]
Unabridged note: Eriastrum eremicum subsp. yageri (M.E. Jones) H. Mason in Arizona.

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Eriastrum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50335, accessed on Oct 20 2014

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click for enlargement Eriastrum eremicum subsp. eremicum
See CalPhotos for additional images
2004 Brent Miller

Geographic subdivisions indicated for the distribution of Eriastrum eremicum subsp. eremicum Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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).

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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.