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


Adiantum jordanii
CALIFORNIA MAIDENHAIR


Higher Taxonomy
Family: PteridaceaeView DescriptionDichotomous Key
Common Name: BRAKE FAMILY
Habit: Perennial herb, in soil or on or among rocks; rhizome creeping to erect, scaly. Leaf: generally all +- alike (or of 2 kinds, fertile, sterile), generally < 50 cm, often < 25 cm; stipe generally thin, wiry, often dark, ×-section with vascular strands generally 1--3, less often many in circle; blade generally pinnate or +- palmate-pinnate (see Adiantum), often >= 2-compound, abaxially often with glands, +- powdery exudate, hairs, or scales; segments round, oblong, fan-shaped, or other, veins generally free. Sporangia: in sori or not, marginal, submarginal, or along veins, covered by recurved, often modified segment margins (false indusia) or not; true indusia 0; spores spheric, sides flat or not, scar with 3 radiating branches.
Genera In Family: +- 40 genera, 500 species: worldwide, especially dry areas. Note: CA members of Cheilanthes moved to the distantly related Myriopteris; Pellaea breweri to be moved as well, from a to-be-redefined Pellaea; traditional, often untenable limits of genera outside CA also being clarified using molecular phylogenetics.
eFlora Treatment Author: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux, except as noted
Scientific Editor: Alan R. Smith, Thomas J. Rosatti.
Genus: AdiantumView DescriptionDichotomous Key


Habit: Plant in soil or rock crevices; rhizome short-creeping, scales variously colored. Leaf: < +- 1 m; stipe cylindric, generally dark red-brown to +- black, shiny, +- scaly at base; blade 2--3-pinnate or +- palmate-pinnate (1st division +- palmate, subsequent ones pinnate), pinnae stalked, fan-shaped or oblong, generally lobed, toothed, or both; axes, blades lacking colored exudate. Sporangia: borne along veins on and covered by highly modified, recurved part of segment margin, appearing to run together at maturity; false indusia +- semicircular to linear; spores generally smooth, tan.
Species In Genus: +- 200 species: tropics, temperate. Etymology: (Greek: unwettable) Note: Widely cultivated.
eFlora Treatment Author: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux
Reference: [Huiet et al. 2015 PhytoKeys 53:73--81]
Adiantum jordanii Müll. Hal.
NATIVE
Leaf: 20--50(70+) cm; stipe red-brown to +- black; blade 2--3-pinnate; pinnules cut or lobed often < 1/4 way to base, generally with < 4 +- irregular lobes, margins at base converging at 90--180(240)°, dark stalk color often ending +- abruptly at base of ultimate segments, midvein forked into +- equal branches, not along margin. Sporangia: sori (and false indusia) 1--3(5) per pinnule, generally > 5 mm, with yellowish exudate among sporangia. Chromosomes: 2n=60.
Ecology: Shaded hillsides, moist woodland; Elevation: < 1600 m. Bioregional Distribution: CA-FP (exc uncommon or absent > 1200 m CaR, SNH); Distribution Outside California: Oregon, Baja California. Note: Cult; sterile hybrids with Adiantum aleuticum (Adiantum ×tracyi W.H. Wagner).
Jepson eFlora Author: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux
Reference: [Huiet et al. 2015 PhytoKeys 53:73--81]
Jepson Online Interchange

Previous taxon: Adiantum capillus-veneris
Next taxon: Adiantum shastense

Name Search

Botanical illustration including Adiantum jordanii

botanical illustration including Adiantum jordanii

Contact/Feedback

Citation for this treatment: Layne Huiet, Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux 2016, Adiantum jordanii, in Jepson Flora Project (eds.) Jepson eFlora, Revision 4, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=11955, accessed on October 13, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 13, 2019.

Adiantum jordanii
click for enlargement
© 2006 George W. Hartwell
Adiantum jordanii
click for enlargement
© 2006 Steve Matson
Adiantum jordanii
click for enlargement
© 2008 Keir Morse
Adiantum jordanii
click for enlargement
© 2010 Gary A. Monroe
Adiantum jordanii
click for enlargement
© 2015 Julie Kierstead Nelson
Adiantum jordanii
click for enlargement
© 2008 Keir Morse

More photos of Adiantum jordanii in CalPhotos



Geographic subdivisions for Adiantum jordanii:
CA-FP (exc uncommon or absent > 1200 m CaR, SNH)
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.