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Paul M. Peterson, Isidoro Sánchez Vega, Konstantin Romaschenko, Diego Giraldo-Cañas, Nancy F. Refulio Rodriguez
Phytokeys
Figure 8.
A−EMuhlenbergiafastigiata (J.Presl) Henrard A habit B ligule C glumes D floret E stamens and pistil F−JMuhlenbergialigularais (Hack.) Hitchc F habit G ligule H glumes I floret J stamens and pistil. Drawings from Giraldo-Cañas and Peterson (2009), Peterson and Giraldo-Cañas (2011)A−E drawn from P.M. Peterson, S. Lægaard, R.J. Soreng & C.R. Annable 12709 (US) F−J drawn from P.M. Peterson, S. Lægaard, R.J. Soreng & C.R. Annable 12684 (US).
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Long-beaked arrowhead (Sagittaria longirostra). Found in swamps and along ponds, New Jersey and Pennsylvania to Alabama (After Britton & Brown)
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Needle spike-rush (Eleocharis avicularis). Found in wet soil throughout North America, except in extreme north. Also in Europe and Asia (After Britton & Brown)
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Potamogeton obtusifolius, winter buds. October.
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Three stages in the growth of Pteroceras rugosum Sowb., E. Indies, showing the development of the "fingers".
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Scirpus pungens, Rootstock.
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Field of Phyllospadix scouleri.
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Waterweek (Philotria canadensis). Found nearly throughout North America, except extreme north (After Britton & Brown)
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Leafy pondweed (Potamogeton foliosus). Niagra Falls to Michigan and California (After Britton & Brown)
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Arizona-Sonora Desert Museum, Tucson, Pima County, Arizona, US
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Warner Parks Nature Center, Nashville, Davidson County, Tennessee, US
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Big Swan Creek watershed, Lewis County, Tennessee, US
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Vanderbilt University, Nashville, Davidson County, Tennessee, US
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Warner Parks Nature Center, Nashville, Davidson County, Tennessee, US
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Keri Drive, Pleasant View, Cheatham County, Tennessee, US
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Canberra, Australian Capital Territory, Australia
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Inflorescence of Eriocaulon stellulatum from Eriocaulaceae.
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Orinda, California, United States
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Denver, Colorado, United States
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Native to Thailand, but widespread in southeast Asia. Names include Hurricane Palm and Elephant Palm. Denver Botanical Gardens.