334 
SYNGENESIA SCPERFLUA. 
* Floribus sub co- I * Flowers generally 
rymbosis. I corymbose . 
1. Argentea. Persoon. 
C. sericea; foliis 
lanceolato - linearibus, 
erectis, acutis, integer- 
rimis; corymbo sub pa- 
niculato; involucris pu- 
bescentibus; caule su- 
perne subnudo. 
Silky; leaves lanceo- 
late, linear, erect, acute, 
entire; corymb some, 
what paniculate; invo- 
lucrum pubescent; stem 
nearly naked towards 
the summit. 
Inula Argentea. Pursh, 2. p. 532. Nutt. 2. p. 151. 
Root perennial. Stem about two feet high, branching towards the sum- 
mit. Leaves long, (those of the root ten to twelve inches,) nearly linear, 
somewhat rigid, entirely covered as well as the stem with long silken hairs, 
longitudinally appressed to their surface. Flowers in an irregular terminal 
corymb. Involucrum imbricate ; leaves subulate, acute, pubescent, and in 
the specimen now before ’me, more covered with glands than those of the 
succeeding species. Florets of the ray ten to twelve; of the disk numerous, 
all yellow. Seeds oblong, villous or hispid. Pappus of both florets simi- 
lar, the exterior subulate, resembling the interior in colour ; interior very 
scabrous, light brown. 
Grows in dry soils. 
Flowers July — October. 
2. Graminifolia. Mich. 
C. sericea, foliis Ian- 
ceolato-linearibus, acu- 
tis, integerrimis, nervo- 
sis; corymbis composi- 
tis; caule superne fo- 
liaceo. 
Silky; leaves lanceo- 
late linear, acute, en- 
tire, nerved; corymbs 
compound; stem leafy 
towards the summit. 
Inula Graminifolia. Mich. 2. p. 122. Pursh, 2. p. 532. Nutt. 2. p. 151. 
Erigeron Nervosum. Sp. pi. 3. p. 1953. 
Root perennial. Stem about two feet high. Leaves long, linear, entire, 
distinctly nerved, covered as well as the stem with a pubescence exactly si- 
milar to that of the preceding species; corymb compound, sometimes contain- 
ing many heads. Florets of the ray, ten to twelve ; of the disk numerous, all 
yellow. Stamens naked at base, as long as the corolla (of the disk,) at first 
