Jepson eFlora: Taxon page
Vascular Plants of California
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


Petrophytum caespitosum subsp. caespitosum


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: PetrophytumView Description 

Habit: Shrub, matted, scapose. Leaf: crowded, simple, evergreen, generally +- oblanceolate, entire. Inflorescence: +- spike-like; pedicel bractlets 0. Flower: hypanthium bractlets 0; sepals persistent; petals white; stamens 20--40; pistils generally 5, simple, ovary superior, hairy, styles thread-like. Fruit: follicles, dehiscing along both sutures. Seed: 1--several, linear.
Species In Genus: +- 4 species: western North America. Etymology: (Greek: rock pl)
eFlora Treatment Author: Daniel Potter & Thomas J. Rosatti
Species: Petrophytum caespitosumView DescriptionDichotomous Key


Habit: Plant 3--8 dm wide; rosettes many. Leaf: 1--3-veined abaxially. Inflorescence: 1--5 cm, dense; peduncle 3--10 cm, bracted. Flower: sepals +- 1.5 mm, narrow-ovate, acute; petals +- 1.5 mm, generally obtuse; style +- 3 mm. Fruit: +- 2 mm. Seed: 1--2, +- 1.5 mm, linear to obovoid, brown, smooth.

Petrophytum caespitosum (Nutt.) Rydb. subsp. caespitosum
NATIVE

Ecology: Limestone ledges, rocks, often in pinyon/juniper woodland; Elevation: 1350--3050 m. Bioregional Distribution: W&I, DMtns; Distribution Outside California: to Rocky Mountains. Flowering Time: May--Sep
Synonyms: Petrophyton caespitosum subsp. caespitosum, orth. var.
Jepson eFlora Author: Daniel Potter & Thomas J. Rosatti
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Petrophytum caespitosum subsp. acuminatum
Next taxon: Physocarpus

Name Search

Contact/Feedback

Citation for this treatment: Daniel Potter & Thomas J. Rosatti 2012, Petrophytum caespitosum subsp. caespitosum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91913, accessed on December 15, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 15, 2019.

Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2015 Steve Matson
Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2015 Steve Matson
Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2015 Steve Matson
Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2005 James M. Andre
Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2019 Steve Matson
Petrophytum caespitosum subsp. caespitosum
click for enlargement
© 2005 James M. Andre

More photos of Petrophytum caespitosum subsp. caespitosum in CalPhotos



Geographic subdivisions for Petrophytum caespitosum subsp. caespitosum:
W&I, DMtns
MAP CONTROLS
1. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner.
2. California county polygons can be turned off and on in the layer control box.
3. Filling of Jepson subdivision polygons can be turned off and on in the layer control box.
4. Moving the cursor over any numbered cluster will show the range boundary of the included specimens (with a blue polygon).
5. Marker clustering can be turned off by clicking this link:      Marker Clustering OFF
WARNING: Turning this off might cause maps with large numbers of specimens to load slowly.
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.
MAP LEGEND
View all CCH records
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.
READ ABOUT YELLOW FLAGS


CCH collections by month

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.