78 TWELFTH ANNUAL REPORT. 



CHRYSOPSIS, Nutt. Golden Aster. 



C. villosa, Nutt. Golden Aster. 



Common throughout most of the state ; but probably wanting or infrequent near 

 its south side, and also northeastward. Fort Snelling, Parry; Minneapolis (common), 

 Roherts; upper Mississippi river, Houghton, Oarrison; common in Stearns and Todd 

 counties and in the Red river valley, Upham. 



• INULA, L. Elecampane. 



I. Helenium, L. Elecampane. 



Nicollet county, Aiton; Minneapolis, Roberts. Infrequent. 



POLYMXIA, L. Leaf- CUP. 



P. Cauadensis, L. Leaf-cup. 

 Lapham. Rare. South. 



SILPHIUM, L. Rosin-Plant. 



S. laciniatuiii, L. Rosin-weed. Compass-Plant. 



Common, often abundant, in the south edge of the state ; extending north to Good- 

 hue county, Sandbery, southeastern Rice county (plentiful), Nicollet county, Aiton, 

 southeastern Watonwan county (frequent), and New Ulm (very scarce), Juni; and west 

 to Luverne, Upham; and Into Dakota, Gray's Synoptical Flora of N. A. A gum which 

 is frequently chewed like that of the spruce, exudes from stems of this plant, when 

 their tops arc' broken off. The peculiar deflection of the leaves to a north and south 

 direction, at the same time presenting one edge upward and the other toward the 

 ground, is very noticeable. (See America7i Naturalist, vol. xvi, pp. 625— 635, and vol. 

 xvii, pp.542 and 656.) 



S. terebiiitliinaceiiin, Jacq. Prairie Dock. Rosin-Plant. 

 Lapham. Blue Earth county, ieibej"(/. South. 



S. integTifoliiim, Michx. Rosin-Plant 



Lapham. South. 



S. perfoliatum , L. Cup-Plant. 



Common southward ; extending north to Minneapolis, Roberts, the Minnesota river 

 (common), Fergus Falls, Leonard, and the Slsseton Agency in Dakota, Upham. 



PARTHENIUM, L. Parthenium. 



P. integrifolium, L. Piirthenium. 

 Lapham. South. 



IVA, L. Marsh Elder. Iva. 



I. xanthiifolia, Nutt. (Cyclacbsena xanthiifolia, Fres.) Iva. 



Frequent southeastward ; abundant southwestward ; extending north to Todd 



perennial caudex, 12 to 20 inches high, corymbosely branched above ; leaves .somewhat 

 rigid, glaucous and punctate-reticulated ; the radical ones spatulate-lanceolate, nar- 

 rowed into a petiole, dentate or incised ; the cauline mostly oblong, sessile and partly 

 clasping, finely toothed or spinulose-serrate ; heads [yellow] numerous ; involucels 

 sub-globose, 6 lines broad; the scales very rigid, closely appressed, bat with very long 

 reflexed or squarrose subulate points ; rays numerous, rather narrow ; pappus of 2 to 

 4 very rigid deciduous bristles or awns. August. Eaton in Bot. Rep. of King's Expl. 

 of the Fortieth Parallel. 



