No. 50.] 173 l»L 



Thuya, L. Arbor Vita . , 



occidentalis, L. Rocky hills, along rivers. May. fr'f"--'^* 



Cupresstjs, L. Cypress. 



thuyoides, L. White Cedar . Swamps, Long Island. May. 



Juniperus, L. Juniper. 



virginiana, L. Red Cedar. Rocky banks and dry hills. Sir 

 W. Hooker considers this species as identical 

 with J. sabina. May. 

 communis, L. Common Juniper . . Dry rocky woods . May. 



Sub-Order Taxine^e. 



Taxus, L. Yew. 



canadensis, L. American Yew, Running ox Ground Hemlock. 

 Moist rocky places . April . 



CLASS III. ENDOGENS, or MONOCOTYLEDONS. 



Order AMARYLLIDACE^E . The Narcissus Tribe. 



Hypoxis, L. Star Grass. 



erecta, L. Woods. May-July. 



Order IRIDACEyE. The Iris Tribe. 



Sisyrinchium, L. Rlue-eyed Grass. 

 anceps, L. Meadows. July. 



Var. mucronatum. S. mucronatum, Michx. Sandy woods, 

 Long Island, &c . . 



Iris, L. 



versicolor, L. I. virginica, Pursh. Blue Flag. Wet grounds. 



June-July . 

 virginica, L. I. prismatica, Pursh. I. gracilis, Bigel. Margins 

 of swamps . June . 



Order HYDROCHARACEiE . The Frog-bit Tribe. 



Hydrocharis, L. Frog's-bit. 



cordifolia, Nutt. Braddock's Bay, Lake Ontario. Dr. Bradley. 



