48 ACER. 



branous 5 toothed, no petals, stamens 4 to 6 

 without glands, fruit hairy, flowers glomerate, 

 leaves palmate or angular. 8 A. dasycarpum, 

 and a N. Sp. from Oregon. 



9. A. viRGATUM Raf. many stems and branch- 

 es virgate, leaves on long petiols, rounded an- 

 gular crenate acute. — Mentioned by Lewis and 

 Clarke as a small white maple, bark white : 

 perhaps another Var of A. circinatum, but our 

 white maple is the dasycarpum. Seen dry, 

 without flowers. 



V. Negundo or Negundium Raf 1808. Dec. 

 Beck. Dioical, without complete flowers. Cal. 

 minute 4-5 dentate, no petals, anthers 4 to 5 

 sessile, fruit smooth, flowers racemose pendu- 

 lous, leaves pinnate or ternate. 10. A. or N. 

 fraxinifolmm,\en.\es ternate and pinnate, fo- 

 lioles unequallyjdentate, the lasttrilobed. — 11 A. 

 or N. TRiFOLiATUM Raf. fl. Tex. 8. leaves ter- 

 nate, folioles ovate oblong entire, smooth, acute, 

 the last Sdentate. — In Texas and Arkansas, 

 branches green, flowers 4androus. Seen dry. 

 figure Autikon rare. Ic. N. Sp. — 12 A. or N. 

 lobatum Raf. leaves nearly simple, triparted or 

 trilobed, sublaciniate. Apalachian Mts. Seen 

 alive, figure Autikon rare. Ic. N. Sp. 



VI. Sphendamus Raf. (old name) Dioical, 

 Cal. 6 parted, no petals, stamens 9, long hairy, 

 fruits hairy ? flowers in erect racemes, leaves 

 digitate. 13. A. ^nacrophylum Pursh. leaves 

 digitate hairy beneath, segments trilobed, re- 

 pand dentate. In Oregon, and another N. Sp. 

 or Var. 14. A. palmatum Raf. leaves wide 

 palmate, 5parted, smooth, segments 3 or 5 fid, 

 lobed and dentate. On the R. Oregon, leaves 

 on long petiols equal to leaves, they are broader 

 than long, 12 inches wide, 8 long. A tree 40 

 feet high. Seen dry. fig. Ic. N. Sp. 



