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Porterella carnosula

Higher Taxonomy
Family: CampanulaceaeView DescriptionDichotomous Key

Habit: Annual to perennial herb [tree]. Leaf: generally cauline, generally simple, generally alternate, petioled or not; stipules 0. Inflorescence: cyme, panicle, raceme, spike, or flowers 1; terminal or in axils of leaf-like or reduced bracts. Flower: bisexual, cleistogamous or open, radial or bilateral, inverted (pedicel twisted 180°) or not; hypanthium generally present, +- fused to ovary; sepals generally 5; corolla radial to 2-lipped, petals generally fused, tube deeply divided on 1 side or not, lobes generally 5; stamens 5, free or +- fused (anthers, filaments fused into tube or filaments fused above middle); ovary inferior or 1/2 inferior (superior in fruit), chambers 1--3, placentas axile or parietal, ovules many, style generally 1, 2--5-branched. Fruit: generally capsule, open on sides or top by pores or short valves. Seed: many.
Genera In Family: +- 90 genera, +- 2500 species: worldwide. Note: Some cultivated for ornamental (Campanula, Jasione, Lobelia). Subfamilies sometimes treated as families. Positions of flower parts given after flowering inversion, if any. Parishella moved to Nemacladus.
eFlora Treatment Author: Nancy R. Morin, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: PorterellaView Description 

Species In Genus: 1 sp. Etymology: (Thomas C. Porter, United States botanist, 1822--1901)

Porterella carnosula (Hook. & Arn.) Torr.
Habit: Annual, 2--30 cm, emergent or terrestrial, glabrous. Stem: erect, branches from base or 0. Leaf: cauline, sessile; blade (5)12--15 mm, (1)3--5 mm wide, narrowly ovate (aerial) to narrowly triangular (submersed), entire or few-toothed. Inflorescence: raceme; bract 1 per flower, leaf-like, ascending; pedicels in fruit 1--3 cm. Flower: inverted, fragrant; hypanthium 1--2.5 mm; sepals >= fruit, narrowly triangular; corolla >> calyx, blue, with a symmetric yellow spot on lower lip, tube entire, 4--5 mm, cylindric, strongly 2-lipped, adaxial lobes 2, 1--2 mm, narrowly triangular, erect, abaxial lip with 2 low ridges, 3--8 mm, +- round, spreading; stamens fused, anthers +- 2 mm, tufted, 2 short anthers also with horn-like appendage +- 0.5 mm; ovary 2-chambered, stigma cup- or plate-like, papillate. Fruit: 5--10 mm, narrowly obconic to cylindric, valvate; top acute, +- pointed, or rounded. Seed: 1 mm, smooth except finely striate. Chromosomes: n=12.
Ecology: Moist, grassy roadsides, lake and pond edges; Elevation: 1300--3500 m. Bioregional Distribution: CaRH, SNH, GB; Distribution Outside California: to Wyoming, Arizona. Flowering Time: Jun--Aug
eFlora Treatment Author: Nancy R. Morin
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botanical illustration including Porterella carnosula


Citation for this treatment: Nancy R. Morin 2016. Porterella carnosula, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 05, 2016.

Porterella carnosula
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© 2005 Steve Matson
Porterella carnosula
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© 2005 Steve Matson
Porterella carnosula
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© 1992 Gary A. Monroe
Porterella carnosula
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© 2002 Gary A. Monroe
Porterella carnosula
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© 2007 Steve Matson
Porterella carnosula
click for enlargement
© 2007 Steve Matson

More photos of Porterella carnosula in CalPhotos

Geographic subdivisions for Porterella carnosula:
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.
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).

View elevation by latitude chart
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.