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|Family: Apiaceae (Umbelliferae)||View Description||Dichotomous Key|
|Genus: Eryngium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Eryngium castrense Jeps.
Habit: Glabrous. Stem: ascending to erect, 2--6 dm, many-branched 2--5 cm distal to rosette, spiny, glabrous. Leaf: petiole short to 0, << blade; blade 10--30 cm, oblong to lanceolate, deeply pinnately or bipinnately lobed. Inflorescence: heads 8--15 mm, +- spheric, in cymes; peduncle 0.5--2.5 cm; bracts 15--30 mm, linear, densely spiny on margins and abaxially. Flower: sepals 3--3.5 mm, lanceolate, margin scarious, entire (pinnately lobed or toothed in CaRF & c SNF), tapered to tip-spine; petals oblanceolate, white or faintly purple; styles 3.5--4.5 mm, generally > sepals. Fruit: 3--3.5 mm, narrowly elliptic; scales dense, +- unequal, lanceolate, acuminate, papillate. Chromosomes: 2n=32,64.
Ecology: Vernal pools, wet swales, intermittent streambeds; Elevation: < 900 m. Bioregional Distribution: CaRF, n&c SNF, e GV, e SnFrB (Diablo Range). Flowering Time: Apr--Jul Note: Intergrades with Eryngium spinosepalum in southern SNF and Eryngium vaseyi var. vallicola in SnJV.
Unabridged Synonyms: Eryngium vaseyi var. castrense (Jeps.) Mathias & Constance; Eryngium spinosepalum var. medium (Jeps.) Mathias; Eryngium globosum Jeps. var. medium Jeps., illeg.
eFlora Treatment Author: Robert E. Preston, Michael S. Park & Lincoln Constance
Jepson Online Interchange
Previous taxon: Eryngium articulatum
Next taxon: Eryngium constancei
Citation for this treatment: Robert E. Preston, Michael S. Park & Lincoln Constance 2017. Eryngium castrense, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=25076, accessed on January 16, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 16, 2017.