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Polycarpon tetraphyllum var. tetraphyllum
FOUR-LEAVED ALLSEED

Higher Taxonomy
Family: CaryophyllaceaeView DescriptionDichotomous Key

Common Name: PINK FAMILY
Habit: Annual to perennial herb; rarely dioecious (Silene), taprooted or rhizome generally slender. Leaf: simple, generally opposite (subwhorled), entire, pairs at nodes often +- connected at bases; stipules generally 0; petiole generally 0. Inflorescence: generally cyme, generally open; flowers 1--many; involucre generally 0 (present in Dianthus, Petrorhagia). Flower: generally bisexual, radial; hypanthium often present but obscure; sepals (4)5, +- free or fused into a tube, margins generally scarious, more so on inner 2 or not, tube generally not scarious, awns generally 0; petals (4)5 or 0, generally tapered to base (or with claw long, limb expanded), entire to 2--several-lobed, limb generally without scale-like appendages adaxially, generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries 0 or 5; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2--5 with 0 branches or 1 with 2--3 branches. Fruit: capsule or utricle (rarely +- dehiscent), generally sessile.
Genera In Family: 83 or 89 genera, 3000 species: widespread, especially arctic, alpine, temperate northern hemisphere; some cultivated (Agrostemma, Arenaria, Cerastium, Dianthus, Gypsophila, Lychnis, Sagina, Saponaria, Silene, Vaccaria). Note: Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5--8.
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: PolycarponView DescriptionDichotomous Key

Common Name: POLYCARP
Habit: Annual, matted or tufted, taprooted, glabrous. Leaf: opposite, appearing whorled or not; stipules 0.4--2.8 mm, lanceolate to triangular, scarious, entire to irregularly toothed or cut, white; petiole generally +- present; blade oblanceolate to obovate; vein 1. Inflorescence: axillary, open to dense; flowers few to many; pedicels 0.2--2 mm. Flower: sepals 5, +- free, 1--2.2 mm, lanceolate to ovate, glabrous, margin scarious, white, awn conic to widely triangular; petals 5, 0.5--1.1 mm, entire or notched; stamens 3--5, +- fused at base; style 1, 3-branched, 0.1--0.3 mm. Fruit: capsule, ovoid to spheric; valves 3, margin rolled inward. Seed: several, brown.
Species In Genus: 15 species: worldwide. Etymology: (Greek: many fruit, from capsule number)

Polycarpon tetraphyllum (L.) L. var. tetraphyllum
NATURALIZED
Stem: prostrate to erect, often much-branched, especially above, 3--17 cm. Leaf: stipules lanceolate to widely triangular; petiole 0 or tapered to blade; blade 4--12 mm, obovate. Flower: sepals lanceolate to ovate, awn widely triangular; petals linear to elliptic. Seed: 0.4--0.5 mm, obliquely triangular, granular. Chromosomes: 2n=32,48,64.
Ecology: Disturbed shaded areas, roadsides; Elevation: < 450 m, 1180 m. Bioregional Distribution: NCoRO, n SNF, c SN, ScV, CCo, SCo, SnGb; Distribution Outside California: British Columbia, Texas, southeastern North America; native to southern Europe. Flowering Time: Spring--fall
Unabridged Note: 2 other varieties, native to southern Europe, introduced +- worldwide.
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler
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Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2016. Polycarpon tetraphyllum var. tetraphyllum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81542, accessed on February 07, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 07, 2016.


Geographic subdivisions for Polycarpon tetraphyllum var. tetraphyllum:
NCoRO, n SNF, c SN, ScV, CCo, SCo, SnGb;
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.