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DIPSACACEAE TEASEL FAMILY

Charles D. Bell & Elizabeth McClintock

Annual to perennial herb [(shrub)], armed or not. Stem: generally branched. Leaf: simple, generally in basal rosettes and cauline, generally opposite, ± fused around stem, entire, toothed, or pinnately lobed or dissected, petioled or not; stipules 0. Inflorescence: head, terminal, on long peduncle, many-flowered, dense, ± spheric or cylindric, subtended by involucre; each flower generally ± enclosed by involucel of 1–2 generally fused bractlets, this generally expanded above or in fruit, generally subtended by 1 receptacle bract. Flower: bisexual, ± bilateral, especially outermost; calyx limb cup-shaped or divided into 4–5(10) linear or bristle-like segments; corolla ± funnel-shaped, lobes 4–5, < tube, generally unequal; stamens generally 4, attached to corolla tube, alternate lobes; ovary inferior, 1-chambered, style ± exserted from corolla, stigma generally 2-lobed. Fruit: achene, enclosed by sometimes enlarged involucel, generally topped by persistent calyx.
10–11 genera, 270–350 species: Europe to eastern Asia, central and southern Africa; several cultivated for ornamental. [Caputo et al. 2004 Plant Syst Evol 246:163–175] —Scientific Editor: Thomas J. Rosatti.

Key to Dipsacaceae

DIPSACUS TEASEL
Biennial, armed with prickles or spines ± throughout. Stem: erect, generally < 2 m, stout, few-branched, rough-hairy. Leaf: generally < 5 dm, entire or toothed. Inflorescence: generally ± cylindric; involucre bracts unequal, linear, receptacle bract ending in a spine. Flower: calyx limb cup-shaped, persistent; corolla generally lavender (white), tube long, lobes unequal; stamens 4. Fruit: 4-angled, hairy.
± 15 species: Europe, western Asia, Africa. (Greek: thirst, from leaf bases that in some species hold water)
Unabridged references: [Ferguson & Brizicky 1965 J Arnold Arbor 46:362–365]

Key to Dipsacus

D. fullonum L. WILD TEASEL
NATURALIZED
Leaf: pairs generally narrowly fused around stem. Inflorescence: 5–10 cm, ovoid-cylindric. Fruit: 6–8 mm.
2n=16,18. Roadsides, pastures, fields, sometimes moist sites; < 1700 m. North Coast, Klamath Ranges, c&s Sierra Nevada Foothills, San Francisco Bay Area; native to Europe. Apr–Aug {Weed listed by Cal-IPC} [Online Interchange]

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 21 2014
Citation for this treatment: [Author of taxon treatment] 2012. Dipsacus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=23134, accessed on Apr 21 2014

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Bioregions in which Dipsacus fullonum occurs 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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.