Feb., 1917] The Crowfoot Family in Ohio 111 



sessile. Flowers pale yellow, petals longer than the sepals. 

 Achenes spiny-tuberculate on both sides and margins. Waste 

 places. From Europe. No specimens. 



13. Ranunculus obtusiusculus Raf . Lance-leaf Buttercup. 

 Stems ascending, 1-3 ft. long, often rooting at the nodes. 

 Leaves lanceolate, entire or denticulate, petioles clasping. 

 Flowers panicled, bright yellow, ^-^ in. broad. Fruit com- 

 pressed achenes, forming a globose head. Wet ditches and 

 swamps. Licking, Cuyahoga, Lorain, Lake, Franklin, Erie, 

 Jackson. 



14. Ranunculus delphinifolius Torr. Yellow Water Crow- 

 foot. Aquatic or partly immersed herbs with long branching 

 stems rooting at the nodes. Immersed leaves finely dissected; 

 emersed leaves 3-5 divided. Flowers yellow, Y^-^Yi in. 

 broad. Head of fruit globose, achenes callous margined and 

 tipped by a straight beak. Ashtabula, Darke, Auglaize, 

 Lucas, Wood, Wyandot, Huron, Williams, Marion. 



Ficaria (Rupp.) Huds. Golden-cup. 



Succulent, perennial herbs with fleshy tuberous roots. 

 Stem leaves alternate, simple, entire or crenate. Flowers 

 yellow and solitary; sepals 3-5, deciduous; petals 7-12; stamens 

 and carpels numerous. Achenes in a head; cotyledon only one. 



1. Ficaria ficaria (L.) Karst. Golden-cup. A low herb, 

 3-5 in. high, found in moist places. Leaves cordate, 1-23/2 in. 

 broad, obtuse crenate, with broad petiole. Flowering stem 

 scapose with broad petiole. Flowering stem scapose with one 

 or two leaves. Flowers 1-1 3^-^ in. in diameter. From Europe. 

 Lake County. 



Batrachium S. F. Gr. Water-crowfoot. 

 Aquatic, perennial herbs; usually with dissected leaves; 

 the immersed ones very finely dissected. Flowers solitary on 

 peduncles borne opposite the leaves; white or the claw of the 

 petals yellow; sepals and petals usually 5; stamens many; 

 carpels several. Achenes transversely wrinkled. 

 1. Leaves petioled, flaccid when taken from the water. B. trlchophyllum. 

 1. Leaves sessile or nearly so, rigid when taken from the Avater. 

 B. cU'cenetum. 



1. Batrachium trichophyllum (Chaix) Schlutz. White Water- 

 crowfoot. Leaves all under water and dissected, larger than 

 1 in. broad. Rather general. 



