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


Ophioglossum pusillum
NORTHERN ADDER'S-TONGUE


Higher Taxonomy
Family: OphioglossaceaeView DescriptionDichotomous Key
Common Name: ADDER'S-TONGUE FAMILY
Habit: Perennial herb, small, fleshy, generally glabrous; caudex generally underground, unbranched; roots glabrous with bulblets or plantlets or not. Leaf: generally 1 per caudex per year, divided into 2 facing parts with a common stalk,(0)1 sterile and 1(2) fertile (fertile occasionally aborted); sterile photosynthetic part (trophophore) separated from spore-bearing part (sporophore) at to well above ground level; trophophore simple to compound, veins free and forked or netted with included veinlets; sporophore simple to compound, or 0 in young pls. Sporangia: dehiscent into 2 valves, +- 1 mm wide, thick-walled.
Genera In Family: 10 genera, 80--100 species: +- worldwide, generally rare or overlooked.
Unabridged Note: Distantly related to most (leptosporangiate) ferns. Haploid (gametophyte) generation underground. Both diploid and haploid generations obligately mycorrhizal. The family Psilotaceae (whisk ferns, 2 genera), sister to Ophioglossaceae, is represented in California (SCo) by 1 (of 2 total) apparently introduced species, Psilotum nudum (L.) P. Beauv. Psilotum is easily distinguished by the dichotomously branching, almost leafless green stems, lack of roots, and large (2--3 mm) 3-lobed sporangia; sporangia are borne on the adaxial (upper) side of a minute (+- 1 mm) forked leaf. Pantrop, subtrop (nearest native populations in Arizona and in Sonora, Mexico); expected in cultivation areas, especially at bases of old palms, possibly brought in on root masses as subterranean gametophytes. [Pryer et al. 2004 Amer J Bot 91:1582--1598]
eFlora Treatment Author: Donald R. Farrar, except as noted
Scientific Editor: Alan R. Smith, Bruce G. Baldwin, Thomas J. Rosatti.
Genus: OphioglossumView DescriptionDichotomous Key


Common Name: ADDER'S-TONGUE
Habit: Roots smooth, pale, generally with bulblets or plantlets. Leaf: trophophore simple, linear to lanceolate or cordate, not midribbed, entire, firm, herbaceous, tip rounded, acuminate, or often mucronate, veins netted with included free branched or unbranched veinlets; sporophore generally > sterile, unbranched, slender. Sporangia: in 2 rows, sunken in a linear, long-stalked axis.
Species In Genus: 20--25 species: generally warm temperate, tropics. Etymology: (Greek: snake's tongue, from extended sporophore of leaf) Note: Incl highest chromosome numbers known in vascular pls.
eFlora Treatment Author: Alan R. Smith
Ophioglossum pusillum Raf.
NATIVE
Habit: Caudex generally < 10 mm, 3 mm wide. Leaf: blade flat, pale green, sporophore 1.3--3 × sterile. Sporangia: 10--30 pairs; rows of sporangia 10--30 mm; sterile tip of fertile stalk 1--3 mm. Chromosomes: 2n=+-960.
Ecology: Marsh edges, low pastures, grassy roadside ditches, vernal pool margins; Elevation: 1100--2000 m. Bioregional Distribution: e KR (Siskiyou Co.), NCoRH (Lake, Mendocino cos.), n SNH (El Dorado Co.); Distribution Outside California: to Alaska, northeastern and north-central North America. Note: True Ophioglossum vulgatum L., adder's-tongue fern, unknown in North America.
Synonyms: Ophioglossum vulgatum L. var. pseudopodum (S.F. Blake) Farw.
Jepson eFlora Author: Alan R. Smith
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Ophioglossum californicum
Next taxon: Sceptridium

Name Search

Botanical illustration including Ophioglossum pusillum

botanical illustration including Ophioglossum pusillum

Contact/Feedback

Citation for this treatment: Alan R. Smith 2012, Ophioglossum pusillum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=35166, accessed on December 05, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 05, 2019.

No expert verified images found for Ophioglossum pusillum.



Geographic subdivisions for Ophioglossum pusillum:
e KR (Siskiyou Co.), NCoRH (Lake, Mendocino cos.), n SNH (El Dorado Co.)
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.