650 COMPOSITAE 
Whole plant very smooth. Stem slender, wand-like, 2 to 3 ft. high. Lower 
leaves oblong lance-shaped, often 1 ft. long, tapering to a long slender 
leaf-stalk, apex rounded, margins nearly smooth nearly to the apex, then 
somewhat dentate. Heads in a broad flat densely crowded cluster, not 
one-sided. Flowers 15 to 25 to the head; rays 6 to 9. Moist soil, Western 
New York. <Aug.-Sept. 
31. §. Houghtonii, Torry and Gray. (Fig. 3, pl. 177.) HouciTon’s 
GOLDENROD. Stem smooth, slender, 1 to 2 ft. high, simple. Leaves linear, 
the upper small and remote. Flower heads in a small, terminal, flat clus- 
ter of very few heads; rays 7 to9. Swamps. Genesee Co., N. Y. Autumn. 
11 EUTHAMIA, Nutt. (Solidago, L:) 
Erect herbs, with spreading branches above and with linear or lance- 
shaped leaves, without teeth and with great numbers of small flower heads 
in broad flat clusters. Receptacle nearly flat. Involucre bracts in 2 or 3 
series; ray flowers with pistils only, numerous, yellow. 
l. E. graminifolia, Nutt. (Fig. 1, pl. 177.) Busny GoLDENRop. 
Stem much branched, branches slender, 2 to 4 ft. high. Leaves numerous, 
linear lance-shaped, 3- to 5-nerved. Flower heads yellow, in broad flat 
clusters. Heads small, with 12 to 20 rays and half as many disk flowers. 
Fields and roadsides. Common. July-Sept. 
2. E. caroliniana, (L.) Greene. (Fig. 2, pl. 177.) SLenpER FRa- 
RANT GOLDENROD. Resembles No. 1, but leaves are very narrowly linear 
and plant is usually smaller. Ileads small, very numerous. Dry soil, 
Mass., and southward. <Aug.-Oct. 
12 BOLTONIA, L’Her. 
Smooth branching herbs, with alternate lance-shaped leaves and with 
numerous rather large heads of flowers in loosely spreading clusters. 
Heads at the ends of the branches, with tubular and ray flowers, the lat- 
ter purplish white, the disk flowers yellow. Receptacle conic or convex, 
with small pits in the surface. Involucre of 2 or more series of bracts 
the margins of which are dry and membraneous. Fruit very flat inversely 
egg-shaped or heart-shaped, its margins winged. Aigrette of several mi- 
nute scales, or one or two elongated to bristles. 
B. asteroides, L’Her. (Fig. 1, pl. 178.) Asver-t1ke BorTonta. 
Stem stout, branching above, 2 to 8 ft. high. Leaves lance-shaped, 2 to 5 
in. long. Heads, including the disk and rays, about 1 in. in diameter; 
rays pink, purple or white. Strongly resembles the asters. Moist soil, 
southern part of our area. July-Sept. 
13. SERICOCARPUS, Nees. 
Tufted herbs, with alternate 3-nerved leaves and heads of flowers with 
both tubular and ray florets. Involucre nearly cylindric, its bracts mem- 
braneous, in several series, often with green tips. Receptacle small. 
Fruit inversely pyramidal. Aigrette of numerous fine bristles. Ray 
flowers white with pistils only; disk flowers yellow with both stamens and 
pistils. 
1. S. linifolius, (L.) BSP. (Fig. 2, pl. 178.) |NaRrrow-LEAvED 
Wuite-rorrep Aster. Smooth, 1 to 24 ft. high, slender. Leaves linear, 
