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


Stuckenia filiformis subsp. alpina
SLENDER-LEAVED PONDWEED


Higher Taxonomy
Family: PotamogetonaceaeView Description 
Common Name: PONDWEED FAMILY
Habit: Annual, perennial herb, aquatic, (generally fresh to alkaline), glabrous, from rhizomes, tubers, or winter buds. Stem: erect, simple to branched, cylindric to compressed, rooting at lower nodes; nodal glands present or not. Leaf: simple, cauline, alternate or in subopposite pairs; submersed thread-like to round, sessile or petioled; floating present or not, elliptic to ovate, petioled, leathery; sheath open, continuous with petiole or +- free from blade base, generally stipuled, stipules fused and ligule-like or not. Inflorescence: spike, cylindric to spheric, axillary or terminal, generally emergent, peduncled; bracts 0. Flower: inconspicuous, bisexual; perianth parts [0]4, clawed, +- green, limb generally adaxially concave; stamens [2]4, each fused to base of perianth part [or not], filament generally 0 [short, wide], anthers open to outside; pistils [1]4, ovary 1-chambered, ovule 1, attached to chamber base, style 0 or short. Fruit: drupe, generally obovate, sessile. Seed: 1.
Genera In Family: 3 genera, +- 95 species: worldwide. Note: Recently treated elsewhere to include Zannichelliaceae. Ruppia moved to Ruppiaceae.
eFlora Treatment Author: C. Barre Hellquist, Robert F. Thorne & Robert R. Haynes
Scientific Editor: Thomas J. Rosatti.
Genus: StuckeniaView Description 


Common Name: PONDWEED
Habit: Perennial herb, rhizomed, tubered or not, winter buds 0. Stem: branched, cylindric. Leaf: submersed, sessile, channeled, entire, tip acute to abruptly pointed, notched, or rounded, veins 1--5; stipules fused to leaf blade >= 2/3 stipule length. Inflorescence: submersed; peduncle flexible. Fruit: beaked or not, keel 0. Chromosomes: x=13.
Species In Genus: +-7 species: worldwide.
Unabridged Reference: Börner 1912 Botanisch-systematische Notizen. Abh. Naturwiss. Vereine Bremen 21:245--282; Holub 1977 Preslia 69:361--366
Stuckenia filiformis (Pers.) Börner subsp. alpina (Blytt) R.R. Haynes, Les, & M. Král
NATIVE
Habit: Slender, rhizomed, tubered. Stem: < 65 cm, branches below, subcylindric. Leaf: < 12 cm, < 3 mm wide, linear to bristle-like, tip notched, blunt, rounded (or with abrupt, short point); stipules < 3 cm, sheaths on proximal stems often inflated, others not. Inflorescence: terminal, interrupted below, 5--55 mm, whorls 2--6(9); peduncle 2--10(15) cm. Fruit: 2--3 mm, beak inconspicuous. Chromosomes: 2n=66.
Ecology: Shallow, clear water of lakes, drainage channels; Elevation: 300--2150 m. Bioregional Distribution: KR, c SNH, GV, CCo, SnFrB, GB; Distribution Outside California: to Alaska, Arizona, Greenland, Eurasia. Flowering Time: May--Jul Note: Unrecognized subsp. under Potamogeton filiformis in TJM (1993).
Synonyms: Coleogeton filiformis (Pers.) Les & R.R. Haynes subsp. alpinus (Blytt) Les & R.R. Haynes; Potamogeton filiformis Pers. var. alpinus (Blytt) Asch. & Graebn; Potamogeton filiformis var. macounii Morong
Unabridged Note: Stuckenia filiformis (Pers.) Börner subsp. filiformis not in California.
Jepson eFlora Author: C. Barre Hellquist, Robert F. Thorne & Robert R. Haynes
Unabridged Reference: Börner 1912 Botanisch-systematische Notizen. Abh. Naturwiss. Vereine Bremen 21:245--282; Holub 1977 Preslia 69:361--366
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Stuckenia
Next taxon: Stuckenia pectinata

Name Search

Contact/Feedback

Citation for this treatment: C. Barre Hellquist, Robert F. Thorne & Robert R. Haynes 2012, Stuckenia filiformis subsp. alpina, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=80318, accessed on July 23, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on July 23, 2019.

Stuckenia filiformis subsp. alpina
click for enlargement
© 2016 Dana York
Stuckenia filiformis subsp. alpina
click for enlargement
© 2016 Dana York
Stuckenia filiformis subsp. alpina
click for enlargement
© 2016 Dana York

More photos of Stuckenia filiformis subsp. alpina in CalPhotos



Geographic subdivisions for Stuckenia filiformis subsp. alpina:
KR, c SNH, GV, CCo, SnFrB, GB
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.