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
Ivesia santolinoides

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key

Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera; treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: IvesiaView DescriptionDichotomous Key

Habit: Perennial herb, glandular; odor resinous. Leaf: generally basal, odd-1-pinnately compound, generally +- cylindric; cauline generally alternate, reduced; leaflets 4--80 per side, generally overlapped, generally divided +- to base. Inflorescence: cyme; pedicel bractlets 0. Flower: receptacle generally not stalked; hypanthium shallow or deep, bractlets (0)5, generally < sepals; petals generally 5, 1--5(7) mm, linear to obovate or round, acute to rounded; stamens 5--20(40), filaments generally thread-like; pistils 1--8(20), ovary superior, style attached below fruit tip, base +- rough-thickened. Fruit: achene.
Species In Genus: 30 species: western North America. Etymology: (Eli Ives, Yale University, Connecticut pharmacologist, participant in Pacific Railroad Survey, 1779--1861) Note: Leaf, leaflet data for basal leaves.
eFlora Treatment Author: Barbara Ertter

Ivesia santolinoides A. Gray
Habit: Plant tufted, silvery; caudex 0--several-branched. Stem: erect, generally 15--40 cm. Leaf: mousetail-like, generally 4--10 cm; sheathing bases densely strigose; leaflets 60--80 per side, indistinct, lobes 1--5, < 1.5 mm, obovate to round; cauline leaves 1--3. Inflorescence: open; flowers 30--200, separate; pedicels 5--30 mm, straight. Flower: generally 5--8 mm wide; hypanthium length 1/2 width; petals +- 2 mm, 2 × sepals, obovate to round, white; stamens 15; pistil 1. Fruit: +- 2 mm, smooth, mottled gray-brown. Chromosomes: n=14.
Ecology: Bare places, sandy, granite ledges; Elevation: 1500--3600 m. Bioregional Distribution: SNH, TR, SnJt. Flowering Time: Jun--Sep
eFlora Treatment Author: Barbara Ertter
Jepson Online Interchange

Previous taxon: Ivesia pygmaea
Next taxon: Ivesia saxosa

Name Search
botanical illustration including Ivesia santolinoides


Citation for this treatment: Barbara Ertter 2016. Ivesia santolinoides, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 08, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 08, 2016.

Ivesia santolinoides
click for enlargement
© 2006 Steve Matson
Ivesia santolinoides
click for enlargement
© 2009 Thomas Stoughton
Ivesia santolinoides
click for enlargement
© 2009 Barry Breckling
Ivesia santolinoides
click for enlargement
© 2009 Aaron Schusteff
Ivesia santolinoides
click for enlargement
© 2015 Keir Morse
Ivesia santolinoides
click for enlargement
© 2006 Steve Matson

More photos of Ivesia santolinoides in CalPhotos

Geographic subdivisions for Ivesia santolinoides:
SNH, TR, SnJt.
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.
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.