Jepson Herbarium
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University of California, Berkeley
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Vascular Plants of California
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Purshia tridentata var. glandulosa


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 ornament, 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: PurshiaView DescriptionDichotomous Key

Habit: Shrub. Leaf: +- clustered on short-shoots, simple, persistent or drought-deciduous, generally deeply 3--9-lobed, generally with +- sunken glands adaxially, margin generally not toothed, +- strongly rolled under; bases persistent, overlapping, sheathing stem. Inflorescence: flowers generally 1 on short-shoots. Flower: hypanthium +- funnel-shaped, outside hairy, partly glandular or not, bractlets small, lanceolate; sepals 5, overlapping; petals 5, white to cream [yellow]; stamens (15)20--80(125); pistils 1--7(10), simple. Fruit: achene, +- fusiform to oblong, styles persistent, +- hairy.
Etymology: (Frederick T. Pursh, North American botanist, author of Flora Americae Septentrionalis, 1774--1820)
eFlora Treatment Author: Brian Vanden Heuvel & Thomas J. Rosatti
Unabridged Reference: Koehler & Smith 1981 Madroño 28:13--25; Henrickson 1986 Phytologia 60:468
Species: Purshia tridentataView Description 


Common Name: BITTERBRUSH
Habit: Plant 2--25(40) dm. Leaf: lobes 3(5), central generally spiny at tip, lateral from generally above middle. Flower: hypanthium +- 2.5--5 mm; sepals 2--4 mm; petals 4--8 mm, +- obovate; pistils 1--2. Fruit: canescent; style 5--7(10) mm, not plumose.

Purshia tridentata (Pursh) DC. var. glandulosa (Curran) M.E. Jones
NATIVE
Stem: twig hairs generally glandular. Leaf: adaxially sparsely nonglandular-hairy, sessile or sunken glands few to many. Chromosomes: n=9.
Ecology: Chaparral at desert margins, Joshua-tree, pinyon/juniper woodland; Elevation: 500--3505 m. Bioregional Distribution: c&s SNH (e slope), Teh, n TR, e edge PR, SNE, DMtns; Distribution Outside California: Nevada, Utah, Arizona, Mexico. Flowering Time: Apr--Jun
Synonyms: Purshia glandulosa Curran
Jepson eFlora Author: Brian Vanden Heuvel & Thomas J. Rosatti
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Purshia tridentata var. glandulosabotanical illustration including Purshia tridentata var. glandulosa


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Citation for this treatment: Brian Vanden Heuvel & Thomas J. Rosatti 2012, Purshia tridentata var. glandulosa, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=77220, accessed on December 03, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 03, 2024.

Purshia tridentata  
var. glandulosa
click for image enlargement
©2015 Keir Morse
Purshia tridentata  
var. glandulosa
click for image enlargement
©2015 Keir Morse
Purshia tridentata  
var. glandulosa
click for image enlargement
©2000 Gary A. Monroe
Purshia tridentata  
var. glandulosa
click for image enlargement
©2003 Michael Charters
Purshia tridentata  
var. glandulosa
click for image enlargement
©2015 Keir Morse

More photos of Purshia tridentata var. glandulosa
in CalPhotos



Geographic subdivisions for Purshia tridentata var. glandulosa:
c&s SNH (e slope), Teh, n TR, e edge PR, SNE, DMtns
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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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

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All markers link to CCH specimen records. The original determination is shown in the popup window.
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.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month Flowering-Fruiting Monthly Counts

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).