catalogue. 81 



1327. cordata, Muhl. Heart-leaved Willow. 



(Watson in King's 5th Report). 



1328. var. rigid a, Muhl. 



St. Louis, (Geyer). 



1329. var. angustata, And. 



Putnam, (Swallow). 



1330. discolor, Muhl. Glaucous Willow. 



Greene, (Shepard), Southern Mo., (Sargent). 



1331. humilis, Marsh. Prairie Willow. 



Boone, (Tracy), Greene, (Shepard), Jackson, (Bush), 

 St. Louis, (Geyer). 



1332. longifolia, Muhl. Long-leaved Willow. 



Boone, (Tracy), Jackson, (Bush), Putnam, (Swallow). 



1333. lucida, Muhl. Shining Willow. 



Jackson, (Bush). 



1334. nigra, Marsh. Black Willow. 



Common. 



1335. petiolaris, Smith. Petioled Willow. 



Jackson, (Bush). 



1336. sericea, Marsh. Silky Willow. 



Jackson, (Bush), St. Louis, (Murtfeldt). 



1337. tristis, Ait. Dwarf Gray Willow. 



Pike, (Pech). 



1338. Populus alba, L. Silver Poplar. 



Introduced. 



1339. angulata, Ait. Angled Cottonwood. 



Jackson, (Bush). 



1340. balsamifera, L. Balsam Poplar. 



Boone, (Galloway). 



1341. grandidentata, Michx. Large-toothed Aspen. 



Boone, (Tracy), Wright, (Bush). 



1342. heterophylla, L. Downy Poplar- 



Common Southeast. 



1343. monilifera, Ait. Cottonwood. 



Common, especially Northwest. 



1344. tremuloides, Michx. American Aspen. 



Common Northward. 



CONIFEfLE. 

 Pine Family. 



1345. Juniperus communis, L. Juniper. 



Greene, (Shepard). 



