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Najas minor All.
Brittle naiad; Eutrophic water-nymph

Life   Plantae   Monocotyledoneae   Najadaceae   Najas

Najas minor
© Les Mehrhoff, 2008-2010 · 1
Najas minor

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Najas minor
© Les Mehrhoff, 2008-2010 · 1
Najas minor
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Following modified from Flora of Taiwan, National Taiwan University
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Following modified from Taiwan Biodiversity National Information Network
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Kingdom Plantae  
 Phylum Magnoliophyta  
 Class Liliopsida  
 Order Alismatales  
 Family Najadaceae  
 Genus Najas  
  Najas minor    Allioni, 1785 
Provider: Ching-I Peng 
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Synonyms: Caulinia fragilis Caulinia minor Fluvialis minor Ittnera minor Najas dichotoma Najas fragilis Najas minor intermedia Najas minor longifolia Najas minor spinosa Najas moshanensis Najas subulata details
Citation: Flora of Taiwan 2nd ed. 5: 33, 2000
Name Code: 201877
  IUCN Red List:LC      
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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=NAMI ---> https://plants.usda.gov/java/profile?symbol=NAMI
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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 22 | Najadaceae | Najas

7. Najas minor Allioni, Flora Pedemontana. 2: 221. 1785.

Stems profusely branched near apex distally, 11--120 cm ´ 0.2--1 mm; internodes 0.5--5.8 cm, without prickles abaxially. Leaves usually recurved with age, 0.5--3.4 cm, stiff in age; sheath 1--3 mm wide, apex truncate to auriculate; blade 0.1--1.2 mm wide, margins conspicuously serrulate, teeth 7--15 per side, apex acute, with 1--2 teeth, teeth multicellular; midvein without prickles abaxially. Flowers 1--2 per axil, staminate and pistillate on same plant. Staminate flowers in distal axils, 1.9--2.2 mm; involucre 2-lobed, beaks 0.4--2.1 mm; anther 1-loculed, 0.3 mm.

Flowering summer--fall. Ponds, lakes, and slow- moving streams; 0--500 m; introduced; Ala., Del., Fla., Ga., Ill., Ind., Ky., La., Mass., Mich., Miss., Mo., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Vt., Va., W.Va.; Eurasia; Africa.

Pistillate flowers in distal to proximal axils, 2.2 mm; styles 1--1.2 mm; stigmas 2-lobed. Seeds slightly recurved, purplish, fusiform, 1.5--3 ´ 0.5--0.7 mm, apex with style situated at center; testa dull, 3 cell layers thick, pitted; aeroleareoles regularly arranged in ca. 15 longitudinal rows, ladderlike, 4-angled, broader than long, end walls not raised. 2n = 24.

Najas minor, with its mature leaves recurved and with its aeroleareoles broader than long and arranged in longitudinal rows like the rungs of a ladder, is one of the more distinctive species of Najas. Young sterile individuals resemble N. gracillima, however.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Najas+minor&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Najas+minor&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2018-03-23 00:02:15 gmt
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