96 MICHIGAN ACADEMY OP SCIENCE. 



*1378. P. polygama Walt. Sandy soil. Ionia, Clinton and Montcalm Counties; 

 Grass Lake, Vestaburg, C. A. Davis. Southward. Abundant near Quinnesec, Menom- 

 inee Co., E. J. Hill. Th. 



*1379. P. Senega L. Seneca Snakeroot. Alma, C. A. Davis; Bay Co., G. M. Brad- 

 ford; near Detroit, O. A. Farwell. Th. 



1380. P. Senega latifolia Torr. & Gray. Hubbardston; Flint; Ann Arbor, C. A. 

 Davis. Rare. Th. 



*1381. P. verticillata L. Whorled Milkwort. Flint; Macomb Co.; Wayne Co. Com- 

 mon in some places, rare in others. 



*1382. P. viridescens L. Purple Milkwort. P. sanguined L. Belding; Ionia; Flint; 

 Macomb Co.; Grass Lake, Whitmore Lake, C. A. Davis. Local, but usually abundant 

 when found at all. C. & S. 



EUPHORBIACEJE J. St. Hil. Spurge Family. 



ACALYPHA L. 



1383. A. gracilens A. Gray. Slender Three-seeded Mercury. A. Virginica yracilens 

 Muell. Detroit, Dr. D. Clark. 



*1384. A. Virginica L. Three-seeded Mercury. Open woods. Variable. Common. 

 Th. 



EUPHORBIA L. , 



1385. E. commutata Engelm. Tinted Spurge. Ann Arbor, C. A. Davis; Flint. 

 Infrequent. 



*1386. E. corollata L. Flowering Spurge. Sandy soil. Frequent. C. & S. 

 *1387. E. Cyparissias L. Cypress Spurge. Escaped from cultivation. Frequent. 

 *1388. E. Esula L. Leafly Spurge. Escaped from cultivation. 



1389. E. glyptosperma Engelm. Ridge-seeded Spurge. Escanaba, Marquette, C. F. 

 Wheeler. 



1390. E. Helioscopia L. Sun Spurge. Common at Detroit, Dr. A. B. Lyons; St. 

 Clair Co., C. K. Dodge; Mackinac Island, O. A. Farwell. 



1391. E. hirsuta (Torr.) Weigand. Hairy Spurge. E. liypericifolia liirsuta Torr. 

 Clair Co., C. K. Dodge; Mackinac Island, O. A. Farwell. 



1392. E. humistrata Engelm. Hairy Spreading Spurge. Flint, Dr. D. Clark; St. 

 Clair Co., C. K. Dodge; Bay Co., G. M. Bradford. 



*1393. E. maculata L. Spotted Spurge. Roadsides and fields, everywhere. 



1394. E. Nicaeensis. All. Nicaeati Spurge. Port Huron, C. K. Dodge 

 *1395. E. nutans Lag. Upright Spotted Spurge. E. Prcslii Guss. Cultivated soil, 

 and waste places. Detroit, Dr. A. B. Lyons; Ionia; Grand Rapids. Infrequent. C. & S. 

 *1396. E. obtusata Pursh. Belle Isle, rare, O. A. Farwell. 

 *1397. E. Peplus L. Petty Spurge. Grand Rapids, H. C. Skeels; Olivet, H. L. Clark. 



1398. E. platyphylla L/ Broad-leaved Spurge. Macomb Co.; "along the Great 

 Lakes," A. Gray; Lake Huron, Dr. Todd. 



1399. E. polygonifolia L. Knotweed Spurge. Sandy shores of the Great Lakes. 

 South Haven, L. H. Bailey; Fort Gratiot, Winch. Cat.; Roscommon and Ann Arbor, 

 C. A. Davis. Frequent. Th. 



1400. E. serpyllifolia Pers. Thyme-leaved Spurge. Keweenaw Co., 0. A. Farwell. 



CALLITRICHACE^E Lindl. Water-Starwort Family. 



CALLITRICHE L. 



1401. C. bifida (L.) Morong. Northern Water Starwort. C. autumnalis L. Flint, 

 Dr. Clark; L. Superior, A. Gray; Alma, C. A. Davis; Sault de Ste. Marie, T. Morong. 



1402. C. palustris L. Water Starwort. Water Fennel. C. vcrna L. Ponds, Macomb 

 Co., Cooley; Keweenaw Co., O. A. Farwell; Norway. E. J. Hill; Alma, C. A. Davis. 



