Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Primula hendersonii

Higher Taxonomy
Family: PrimulaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, or subshrub, glabrous to glandular-hairy. Leaf: simple, +- basal, petioled or not; stipules 0. Inflorescence: scapose umbel, subtended by involucre. Flower: bisexual, radial; parts in 4s or 5s (6s); calyx deeply lobed, often persistent; corolla lobes erect or spreading to reflexed; stamens epipetalous, opposite corolla lobes; ovary superior, 1-chambered, placenta free-central, style 1, stigma head- or dot-like. Fruit: capsule, 2--7-valved or circumscissile. Seed: small, few to many.
Genera In Family: +- 8 genera, 600 species: northern hemisphere; several ornamental (Primula). Note: Based on molecular evidence, non-rosette terrestrial members of Primulaceae as treated in TJM (1993) moved to Myrsinaceae, and Samolus to Theophrastaceae; based on the same evidence, Primulaceae has been treated alternatively to include all of Myrsinaceae and Theophrastaceae. Taxa of Dodecatheon in TJM2 treated here in Primula.
Unabridged Note: Recent molecular work has led to new understanding of relationships in Ericales. As treated here, non-rosette, terrestrial members of Primulaceae s.l. have been removed from that family and inserted in Myrsinaceae. Myrsinaceae, then, is characterized by synapomorphies of dark dots or streaks on stems, leaves, or flowers, short corolla tubes, seeds immersed in the placenta, and --- for woody members --- wood lacking rays or with only multiseriate rays. Primulaceae, Myrsinaceae, Theophrastaceae, and Maesaceae (a recent segregate of tropical trees), now constitute a closely related, monophyletic clade. A more recently proposed, alternative taxonomy treats all members of that large clade within an expanded Primulaceae.
eFlora Treatment Author: Anita F. Cholewa, except as noted
Scientific Editor: Bruce G. Baldwin, David J. Keil, Thomas J. Rosatti.
Genus: PrimulaView DescriptionDichotomous Key

Habit: Perennial herb or subshrub, from rhizome, stolon, or caudex, glabrous or glandular-hairy. Leaf: blade entire or toothed. Flower: erect to spreading or nodding; generally homostylous; sepals erect or reflexed in flower, erect in fruit, persistent; corolla salverform or funnel-shaped with well-developed tube, including anthers, and erect to spreading, notched lobes, or rotate with very short tube, prominently exerted anthers, and reflexed, entire lobes, proximally white and/or yellow and/or dark purple, distally white, lavender, pink, or purple; filaments generally very short, including anthers free, oblong, exerted anthers on generally wide, often fused filaments, erect, generally +- lanceolate, generally +- adherent into a cone around style; ovary superior, style slender, +- exserted beyond anthers, stigma head- or dot-like. Fruit: +- 5-valved or circumscissile, ovoid or oblong-ovoid to cylindric.
Species In Genus: +- 470 species: generally northern temperate. Etymology: (Latin: diminutive of first, from early flower) Note: Dodecatheon, a monophyletic taxon closest to Primula subg. Auriculastrum, recently treated in that subg. as sect. Dodecatheon (Mast & Reveal 2007); taxa treated in Dodecatheon in TJM2 treated in Primula here. Polyploid group; species often intergrade; "anther connective" refers to tissue between pollen sacs, especially near base; dehiscence must be determined on fruit that has aged and dried naturally, because e.g., green fruit of circumscissile taxa (e.g., Primula clevelandii) sometimes split longitudinally as a result of pressing and thereby may appear valved.
eFlora Treatment Author: Thomas J. Rosatti & Sylvia Kelso
Reference: Mast & Reveal 2007 Brittonia 59:79--82
Unabridged Reference: Thompson 1953 Contr Dudley Herb 4:73--154; Mast et al. 2004 Amer J Bot 91: 926--942

Primula hendersonii (A. Gray) Mast & Reveal
Habit: Plant glabrous to glandular-hairy; roots with rice-like bulblets at flower. Stem: 12--48 cm. Leaf: 2--16 cm; blade elliptic to ovate or obovate, generally narrowed abruptly to petiole, entire to +- toothed. Inflorescence: 3--17-flowered. Flower: parts in 4s or 5s, even on same pl; corolla lobes 6--23 mm, magenta to deep lavender or white; filament tube 1--3 mm, anthers 3--5 mm, connective transversely wrinkled, dark maroon to black; stigma +- not enlarged. Fruit: circumscissile. Chromosomes: n=22,33,66.
Ecology: Generally in shady sites; Elevation: < 1900 m. Bioregional Distribution: NW, CaR, SNF, n SNH, GV, SnFrB, CW, SnBr; Distribution Outside California: to southern British Columbia, Idaho. Flowering Time: Mar--Jul Note: Highly variable; possibly hybridizes with Primula clevelandii.
Synonyms: Dodecatheon hendersonii A. Gray; Dodecatheon hansenii (Greene) H.J. Thomps.; Dodecatheon hendersonii subsp. hansenii (Greene) Kartesz; Dodecatheon hendersonii subsp. hendersonii; Dodecatheon hendersonii subsp. cruciatum (Greene) H.J. Thomps.; Dodecatheon hendersonii subsp. parvifolium (R. Knuth) H.J. Thomps.;
eFlora Treatment Author: Thomas J. Rosatti & Sylvia Kelso
Reference: Mast & Reveal 2007 Brittonia 59:79--82
Unabridged Reference: Thompson 1953 Contr Dudley Herb 4:73--154; Mast et al. 2004 Amer J Bot 91: 926--942
Jepson Online Interchange

Previous taxon: Primula fragrans
Next taxon: Primula jeffreyi

Name Search


Citation for this treatment: Thomas J. Rosatti & Sylvia Kelso 2013, Primula hendersonii, in Jepson Flora Project (eds.) Jepson eFlora, Revision 1,, accessed on January 21, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on January 21, 2018.

Primula hendersonii
click for enlargement
© 2008 Keir Morse
Primula hendersonii
click for enlargement
© 2009 Neal Kramer
Primula hendersonii
click for enlargement
© 2015 Steve Matson
Primula hendersonii
click for enlargement
© 2009 Keir Morse
Primula hendersonii
click for enlargement
© 2013 Barry Breckling
Primula hendersonii
click for enlargement
© 2013 Aaron Schusteff

More photos of Primula hendersonii in CalPhotos

Geographic subdivisions for Primula hendersonii:
NW, CaR, SNF, n SNH, GV, SnFrB, CW, SnBr;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.
View all CCH records

CCH collections by month

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