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Key to families | Table of families and genera
Indexes to all 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 |
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 4, clawed, ± green, limb generally adaxially concave; stamens 4, each fused to base of perianth part [or not], filament generally 0 [short, wide], anthers open to outside; pistils 4, ovary 1-chambered, ovule 1, attached to chamber base, style 0 or short.
Fruit: drupe, generally obovate, sessile.
3 genera, ± 95 species: worldwide. [Haynes & Hellquist 2000 FNANM 22:47–74] Recently treated elsewhere to include Zannichelliaceae. Ruppia moved to Ruppiaceae. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553]
Key to Potamogetonaceae
Perennial, rhizomed, tubered or not, winter buds 0.Key to Stuckenia
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.
±7 species: worldwide.
Unabridged references: [Börner 1912 Botanisch-systematische Notizen. Abh. Naturwiss. Vereine Bremen 21:245–282; Holub 1977 Preslia 69:361–366]
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.
2n=66. Shallow, clear water of lakes, drainage channels; 300–2150 m. Klamath Ranges, c High Sierra Nevada, Great Central Valley, Central Coast, San Francisco Bay Area, Great Basin Floristic Province;
Previous taxon: Stuckenia
Next taxon: Stuckenia pectinata
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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|Bioregions in which taxon occurs||Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.|
Chart based on elevation range in Manual and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
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