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Vascular Plants of California
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Sparganium eurycarpum var. greenei


Higher Taxonomy
Family: TyphaceaeView DescriptionDichotomous Key
Common Name: CATTAIL FAMILY
Habit: Perennial herb, glabrous; monoecious; rhizomes or stolons long; colonial, in wet soil to aquatic. Stem: aerial stem 1, +- cylindric. Leaf: basal and cauline, alternate, 2-ranked, spongy; sheath open; ligule 0; blade +- linear. Inflorescence: spike-like or of spheric, unisexual heads; staminate flowers or heads distal to pistillate ones. Flower: small, densely-packed. Staminate Flower: filaments fused proximally. Pistillate Flower: pistil 1, ovary superior, ovules 1--2(4). Fruit: follicle, splitting in water, or drupe-like.
Genera In Family: 2 genera, +- 32 species: worldwide.
eFlora Treatment Author: S. Galen Smith
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: SparganiumView DescriptionDichotomous Key

Common Name: BUR-REED
Habit: Plants generally submerged except inflorescence, or vegetative when all-submerged (emergent to +- terrestrial); rhizomes, stolons slender. Stem: unbranched proximal to inflorescence. Leaf: blade flat to convex, 3-sided, or abaxially keeled. Inflorescence: heads axillary and terminal, 2--60+; bracts leaf-like, distal reduced. Staminate Flower: stamens 2--8. Pistillate Flower: ovary chambers 1--2(4), stigmas generally 1(2--4). Fruit: drupe-like, spongy; perianth parts attached, style and generally stigmas persistent as beak; floating, water-dispersed.
Species In Genus: +- 17 species: northern temperate, western Pacific. Etymology: (Probably Greek: swaddling band, for strap-shaped leaves) Note: Fruit head diam including fruit beaks; fruit body lengths except beak, stalk-like base; beak lengths including stigmas.
Reference: Kaul 2000 FNANM 22:271--277
Unabridged Reference: Cook & Nicholls 1986 Bot Helv 96:213--267, 1987 Bot Helv 97:1--44
Species: Sparganium eurycarpumView Description 

Habit: Plants robust, erect, emergent to +- terrestrial, not aquatic, to +- 2.5 m. Leaf: blades thick to thin, 3-angled proximally, flat or keeled distally. Inflorescence: main axis branches (0)1--4, heads >= 2 per branch; staminate heads +- 10--60; pistillate heads (1)2--8, 1.5--3 cm diam in fruit. Flower: perianth parts dark-thickened distally; stigmas > 1 on 5--100% of pistillate flowers, 3--4 mm. Fruit: body 5--9 mm, 3--7 mm wide, obconic, 3--6-angled, base not stalk-like, tip +- truncate to hemispheric, beak 1--4 mm. Chromosomes: 2n=30.
Note: Varieties intergrade where distributions overlap.
Unabridged Note: Closely related to variable Old World Sparganium erectum sensu lato.
Sparganium eurycarpum var. greenei (Morong) Graebn.
NATIVE
Habit: Plants to +- 2.5 m. Leaf: blades 10--28 mm wide, proximally thin, 3-angled, generally +- flat when pressed. Inflorescence: pistillate heads 1.5--2.5 cm diam in fruit. Flower: stigmas 2 on +- 5--40% of pistillate flowers. Fruit: body 5--8 mm, 3--6 mm wide, distally rounded to generally tapered.
Ecology: Generally coastal; Elevation: < 150 m. Bioregional Distribution: NCo, CCo, SCo; Distribution Outside California: to British Columbia. Flowering Time: Jun--Aug
Synonyms: Sparganium erectum subsp. stoloniferum (Graebn.) H. Hara
Unabridged Synonyms: Sparganium greenei Morong
Jepson eFlora Author: S. Galen Smith
Reference: Kaul 2000 FNANM 22:271--277
Unabridged Reference: Cook & Nicholls 1986 Bot Helv 96:213--267, 1987 Bot Helv 97:1--44
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Botanical illustration including Sparganium eurycarpum var. greenei

botanical illustration including Sparganium eurycarpum var. greenei

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Citation for this treatment: S. Galen Smith 2012, Sparganium eurycarpum var. greenei, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=66594, accessed on November 13, 2019.

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

No expert verified images found for Sparganium eurycarpum var. greenei.



Geographic subdivisions for Sparganium eurycarpum var. greenei:
NCo, CCo, SCo
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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).





 

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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.