54 MICHIGAN ACADEMY OF SCIENCE. 



FAMILY 54. POLYGALACE.E. Milkwort Family. 



201. POLYGALA, Lin. Milkwort. 



517. verticillata, Lin. Grassy fields. Frequent. 



518. viridescens, Lin. Near Linden Park. Scai-ce. 



519. var. sanguinea (Lin.) /*. so»^?</«eo Lin. Sp. PI. 705: 175-3. The 

 type has the flowers greenish or white; the variety has the flowers 

 rose-purple and is the common form. 



FAMILY 55. EUPHORBIACE.E. Spurge Family. 



202. ACALYPHA, Lin. 



520. Virginica, Lin. In thickets on Belle Isle. Common. 



203. RICINUS, Lin. 



521. communis, Lin. Castor-plant. In waste places. Rare. 



204. EUPHORBIA, Lin. 



522. maculata, Lin. Sandy places. Common on Belle Isle and elsewhere. 



523. hirsuta (Torry) Wiegand. Sandy or grassy places near Palmer Park, 



Belle Isle, etc. Rare. 



524. nutans, Lag. Waste places. Frequent. 



525. corollata, Lin. Flowering Spurge. Linden Park. Common. 



526. marginata. Ph. Snow-on-the-Mountain. Waste places. Frequent. 



527. obtusata. Ph. Borders of woods on Belle Isle. Rare. 



528. platyphylla, Lin. Shores of Belle Isle. Rare. 



529. Helioscopia, Lin. Roadsides on Belle Isle. Frequent. 



Order 20. Sapindales. 



FAMILY 56. ANACARDIACE.E. Sumach Family. ' 



205. RHUS, Lin. Sumach. 



530. copallina, Lin. Dwarf or Mountain Sumach. Near Linden Park. 



Common. 



531. hirta (Lin.) Sudw. Belle Isle. Frequent in thickets. 



532. glabra, Lin. Scarlet Sumach. In dry woods on Belle Isle. Common. 



533. radicans, Lin. Poison Oak. Climbing trees by radicles. Belle Isle. 



Common. 



534. var. pubeseens (Mill.) 



Toxicodendron pubeseens Mill. Diet. No. 2: 1868. Rhus Toxieo- 

 dendron var. quercifolium Mx. Fl. Bor. Am. I. 183: 1803. This is 

 a low shrub with extensively creeping under-ground stems which 

 send up branches rarely over a foot in height ; never climbing ; 

 leaflets oval, acute or acuminate and with a broadly or narrowly 

 cuneate base; deeply 3 to 5 (generally 3) incisely-lobed, often- 

 times with one margin entire; lobes ovate, acute or acuminate, 

 margins entire. 



FAMILY 57. AQUIFOLIACE.E. Holly Family. 



206. ILEX, Lin. 



535. verticillata (Lin.) A. Gr. Black Alder. Moist woods on Belle Isle. 



Common. 



FAMILY 58. CELASTRACE^. Staff-tree Family. 



207. EUONYMUS. Lin. 



536. obovatus, Xutt. Strawberry bush. Moist thickets on Belle Isle. Rare. 



537. atropurpureus, Jacq. Wahoo. Belle Isle woods. Common. 



208. CELASTRUS, Lin. 



538. bullatus, Lin. C. scandens L. Climbing over shrubs on Belle Isle. 



Common. 



