Jepson eFlora: Taxon page
Vascular Plants of California
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Pinguicula macroceras
HORNED BUTTERWORT


Higher Taxonomy
Family: LentibulariaceaeView DescriptionDichotomous Key
Common Name: BLADDERWORT FAMILY
Habit: Annual, perennial herb, carnivorous, of moist or aquatic habitats. Stem: caudex or stolon, then often with thread-like branches. Leaf: simple, in rosette, or simple or dissected, emerging from caudex or stolon, with minute, carnivorous bladders +- throughout. Inflorescence: raceme or 1-flowered, scapose. Flower: bisexual; calyx lips 2[4], upper 3-lobed, lower 2-lobed, or lips unlobed; corolla 2-lipped, spurred at base, lower lip flat or arched upward, blocking throat or not; stamens 2, epipetalous; ovary superior, chamber 1, placenta generally free-central; stigma unequally 2-lobed, +- sessile. Fruit: capsule, round, 2-valved, circumscissile, or irregularly dehiscent. Seed: generally many, small.
Genera In Family: 3 genera, 330 species: worldwide, especially tropics.
eFlora Treatment Author: Barry A. Rice
Scientific Editor: Thomas J. Rosatti.
Genus: PinguiculaView Description 


Common Name: BUTTERWORT
Habit: Perennial herb [(annual)] of moist habitats; carnivorous by sticky or slimy leaves. Stem: caudex. Leaf: simple, in rosette, fleshy; margins entire, incurving over trapped prey or not; adaxially with stalked glands that capture small organisms, sessile glands that digest them. Inflorescence: 1-flowered [rarely 2-flowered]; scape succulent, glandular, bracts 0. Flower: calyx upper lip 3-lobed, lower lip 2-lobed; corolla lower lip often hairy, generally not blocking throat. Fruit: 2-valved.
Species In Genus: +- 92 species: America, Europe, Mediterranean. Etymology: (Latin: +- fat, from leaf surface)
Pinguicula macroceras Link
NATIVE
Leaf: 2--5 cm, elliptic to ovate, green to dark brown. Inflorescence: 1--5 per rosette, 1--2 dm. Flower: corolla (including spur) 13--21 mm, 5-lobed, (pale) blue-violet, center of lower lip white; lobes obovate, throat hairy, spur 6--9 mm. Chromosomes: 2n=64.
Ecology: Moist slopes, cliffs, serpentine banks; Elevation: < 1830 m. Bioregional Distribution: n KR (Del Norte, Siskiyou cos.); Distribution Outside California: southwestern Oregon; also northern Oregon to Alaska, Russia; also Japan. Flowering Time: Apr--Jul Note: May not be distinct from Pinguicula vulgaris L. (also 2n=64); plants overwinter as dense bud, proliferate by detachment of basal daughter buds (gemmae).
Synonyms: Pinguicula macroceras subsp. macroceras; Pinguicula macroceras subsp. nortensis J. Steiger & J.H. Rondeau; Pinguicula vulgaris L. subsp. macroceras (Link) Calder & Roy L. Taylor
Unabridged Note: May not be distinct from Pinguicula vulgaris L. (also 2n=64); California, southwestern Oregon plants with calyx lobe tips +- blunt, corolla lobes non-overlapping, sometimes treated elsewhere as Pinguicula macroceras subsp. nortensis J. Steiger & J.H. Rondeau (which might not have been effectively published); plants overwinter as dense bud, proliferate by detachment of basal daughter buds (gemmae).
Jepson eFlora Author: Barry A. Rice
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Botanical illustration including Pinguicula macroceras

botanical illustration including Pinguicula macroceras

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Citation for this treatment: Barry A. Rice 2012, Pinguicula macroceras, in Jepson Flora Project (eds.) Jepson eFlora, /eflora/eflora_display.php?tid=38246, accessed on February 19, 2020.

Citation for the whole project: Jepson Flora Project (eds.) 2020, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on February 19, 2020.

Pinguicula macroceras subsp. macroceras
click for enlargement
© 2009 Barry Rice
Pinguicula macroceras subsp. macroceras
click for enlargement
© 2009 Barry Rice
Pinguicula macroceras
click for enlargement
© 2018 Barry Rice
Pinguicula macroceras
click for enlargement
© 2018 Barry Rice
Pinguicula macroceras subsp. macroceras
click for enlargement
© 2009 Barry Rice
Pinguicula macroceras
click for enlargement
© 2009 Barry Rice

More photos of Pinguicula macroceras in CalPhotos



Geographic subdivisions for Pinguicula macroceras:
n KR (Del Norte, Siskiyou cos.)
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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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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).