IOWA ACADEMY OP SCIENCES. 145 



Hermaphrodite flowers of this species have been collected/ 

 in two different localities. Professor Shimek has given a 

 short illustrated account of his Iowa City specimens. The 

 Blue Grass specimen shows the capsules at maturity. They 

 are monstrously broad, and have been developed mostly in the 

 outer half of the ament. 



Rock Rapids, Lyon Co. 2. Shimek (2 spec.) S. U. 7.; Spirit Lake, Dickinson Co. 4, > 

 Shimek, S. U. I.; Clear Lake, Cerro Gordo Co. 10. Shimek, S. U, I.; Fayette, Fayette Co., 

 18. Fink (2 spec ) Herb.; Fort Dodge, Webster Co. 20. Shimek, S. U. I.; Mud Lake, Hamil- 

 ton Co. 23. Stewart; " Ledges," Boone Co. 25. Pamfnel and Combs (No. 1185); Ames, Story 

 Co. 28. Stewart, Arthur, Pammel (Nos. 1186, 1190, 1212), Ball (Nos. 1187, 1188, 1189), Sample 

 (Herb. Ball); Marshalltown. 30. Pammel (No. 1184); High Bridge, Dallas Co. 35. Shimek, S. 

 U. I.; Johnson Co. 36. Shimek, Elliott, S. U. I.; Blue Grass, Scott Co. 40. Miss Benshoof 

 (Nos 5, 1183), Barnes and Miller (Nos. 13, 14) ; Muscatine. 41. Beppert, Herb.; Council Bluffs 

 42a. Hayden, 1853-4. Abundant on the Missouri (Engelm. Herb. Mo. Bot. Oard.); Muscatine 

 Island, Louisa Co. 43. Myers, S. U. I.; Keokuk. 46. Rolfs; Steamboat Rock, Pammel and 

 Hume (1941k). 



III. SALIX LUCIDA MUHL. 



Salix lucicla Muhl. Neue Schrift. Ges. Nat. Pr. Berlin. 4:239. 

 pi. 6. f. 7. 1803. 



This most beautiful of our willows is a northern plant, and 

 occurs as a small tree or a shrub along rivers and about 

 swampy lakes. It has been found in but two localities in Iowa, 

 Chickasaw and Payette counties, both in northeastern Iowa, 

 which is about the southern limit of its range in the Missis- 

 sippi valley. It may be looked for in its favorite situations 

 throughout ttie northern portion of the state. 



Its beauty is due to the leaves, which when mature are 

 ovate-lanceolate, thick, green and glossy, from three to five 

 inches long, and one-third as wide, finely serrate, with gland- 

 tipped teeth. The glands are large and conspicuous, yellow 

 or darker, and are found also on the petiole at the base of the 

 leaf. The twigs are orange or orange-brown, and lustrous. It 

 resembles very much the cultivated -S'. pentandra or laurifolia, 

 to which it is closely related. 



Lawler, Chickasaw Co. 15. P. H. Rolfs; Payette, Payette 

 Co. 18. Fink {2 spec.) Herb. 



IV. SALIX FLUVIATILIS NUTT. 



Salix fluviatilis Nutt. Sylva. 1 : 73. 1842. 



Salix longifolia Muhl. Neue Schrift. Ges. Nat. Fr. Berlin. 

 4:238. pZ. 6.f. 6. 1803. 



The long-leafed willow is everywhere present along streams 

 and about lakes and ponds. It frequently forms dense thickets 

 in the alluvium along streams, and is often called the sandbar 

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