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|Jepson eFlora: Taxon page
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|Family: Cyperaceae||View Description||Dichotomous Key|
|Genus: Eleocharis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Eleocharis acicularis (L.) Roem. & Schult.
Habit: Perennial herb 1--60 cm, often forming mats; rhizome weak, to 0.5 mm diam. Stem: 0.2--0.5(7) mm diam, subcylindric, often 3--12- angled or -ridged. Leaf: distal sheath delicate, often disintegrating, tip inflated or not. Inflorescence: spikelet 2--8 mm, 1--2 mm wide, often 0 on submersed plants; flower bracts to 25, 1.5--2.5(3.5) mm, tip blunt to acute, not recurved, basal with flower. Flower: anthers 0.7--1.5 mm; stigmas 3. Fruit: 0.7--1 mm, 0.4--0.6 mm wide, 3-sided to +- round in ×-section, often +- white, longitudinal ridges +- 8--12, crossbars 30--60 per ridge; perianth bristles 0 (2--4, <= fruit).
Note: Deeply submersed variants (Eleocharis acicularis var. submersa (Nilsson) Svenson), which often form large vegetative mats and often long thread-like stems without spikelets, may closely resemble Schoenoplectus subterminalis. Varieties often not identifiable.
eFlora Treatment Author: S. Galen Smith
Jepson Online Interchange
Previous taxon: Eleocharis
Next taxon: Eleocharis acicularis var. acicularis
Citation for this treatment: S. Galen Smith 2017. Eleocharis acicularis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=23926, accessed on March 23, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 23, 2017.