BEAL ON MICHIGAN FLORA. 59 



XYRIDACE.E Li lull. Yellow-eyed Grass Family. 



XYRIS L. 



613. X. flexuosa IMuhl. JNTacomb Co.; S. W., Wright Cat.; Ilubbardston, Wheeler; 

 Manistee, F. P. Daniels; Vestabiirj;. ('. A. Davis; S. W., H. S. Popoon. Rare. 



614. *K. montana II. Rie.s. Yellow-eyed Grass. .Y. flexuosa jmsilla A. Gray. Lake 

 Superior, Gray's Manual, 6th edition. 



ERIOCAULACE^ Liiull. Pipewort Family. 

 ERIOCAULON L. 



615. E. septangulare With. Margin of Long Lake, Cheboygan Co., B. & K.; S. W., 

 Wright Cat.; Macomb Co.; Cooley; Kscanaba, E. J. Hill; Alma, C. A. Davis. Infre- 

 quent. L. P. 



COMMELINACE.^ Eeichenb. Spiderwort Family. 

 COMMELINA L. 



616. C. Virginica L. Yirginia Day-flower. S. W. Wright Cat. 



TRADESCANTIA L. Spiderwort. 



617. T. reflexa Raf. Grass Lake, Cassopolis, Muskegon, C. F. Wheeler; Algonac 

 Co., W. S. Cooper. 



618. T. Virginica L. Common Spiderwort. Moist wooks. Ionia Co.; Grand Rapids; 

 Ann Arbor, Allmendinger Cat.; Hillsdale Co. Frequent. C. & S. 



PONTEDERIACE.E Dumort. Pickerel-weed Family. 



PONTEDERIA L. 



*619. P. cordata L. Pickerel-weed. Borders of lakes and slow streams. Lakes in 

 Oakland Co.; Ann Arbor; Ionia Co., and northward. Th. 



*G20. P. cordata lancifolia (Muhl.) Morong. P. cordata a)i(jiistifoUa Torr. Lake 

 St. Clair; Pine Lake, Ingham Co. 



HETERANTHERA R. & P. 



*621. H. dubia (Jacq.) MacM. Water Star-grass. H. gramlnea Vahl. Ann Arbor, 

 Allmend. Cat.; Dexter, Dr. Elmore Palmer; Grand Rapids; Bay Co.; Hubbardston; 

 Alma, C. A. Davis. In streams. Common. C. & S. 



JUNCACEiE Vent. Rush Family. 

 JUNCUS L. 



*622. J. acuminatus Michx. Short-fruited Rush. Macomb Co.; Fruitport, E. J. 

 Hill; Hubbardston; Keweenaw Co., O. A. Farwell; St. Clair Co., C. K. Dodge; Alma, 

 C. A. Davis. 



623. J. articulatus L. Pointed Rush. Alger, C. F. Wheeler; Tuscola County, C. A. 

 Davis. Th. 



624. J. Balticus littoralis Kngelm. Sandy shores. S. Haven, Bailey; to Petoskey; 

 Port Huron; Bay Co., G. M. Bradford. Oscodo and northward. A form of this species 

 is found at Hubbardston, Ionia Co., Wheeler; Port Austin, C. A. Davis. Th. 



625. J. brachycarpus Engelm. Short-fruited Rush. St. Clair Co., C. K. Dodge. 

 •626. J. brachycephalus (Engelm.) Buch. Small-headed Rush. J. Canadensis 



braehj/ccphalm Engelm. Hubbardston; Howell Junction, C. F. "Wheeler; Bay Co., G. M. 

 Bradford. S. 



