186 
DIADELPHIA 0CTANDR1A. 
12 . VlRIDESCENS. 
P. caule simplici; fo- 
liis cuneato-obovatis, 
obtusis ; capitulis cy- 
lindraceis, squarrosis; 
floribus viridescenti- 
bus ; alis calycinis 
longe acuminatis. E. 
Sp. pi. 3. p. 895. Nutt. 2. p. 8 
P. lutea var. nana. Mich. 2. p. 
cuneate, obovate, ob- 
tuse ; heads cylindri- 
cal, squarrose; flowers 
greenish ; calycine 
wings conspicuously 
acuminated. 
3. 
54. 
Stem, simple, 1 — 4 inches long. Leaves cuneate or spathulate, with the 
attenuated base sometimes 2 inches long. Flowers in a long cylindrical 
head. Calycine wings twice as long as the corolla, lanceolate, and with 
a setaceous point, giving the head a squarrose appearance, green, just tin- 
ged with yellow. Keel of the corolla yellowish at the summit, fimbriate. 
Stamens , as in most of the capitate species, 6. Seeds a little hairy. 
Grows in damp pine barrens. 
Flowers through the summer. 
%%%% Floribus co- 
rymbosis. 
13 . Ramosa. 
P. caule erecto,fere 
ab imo ramoso ; foliis 
inferioribus spathula- 
to-obovatis, eaulinis 
linearibus, aequalibus ; 
floribus capitato-co- 
rymbosis, 
P. Corymbosa. Nutt. 2. p. 89- 
%%%% Flowers in 
corymbs. - ■ 
Stem erect, branch- 
ing from the base ; 
lower leaves spathu- 
late obovate, stem 
leaves linear, equal ; 
flowers somewhat ca- 
pitate, the heads form- 
ing corymbs. 
Stem 8 — 12 inches high, angled, branching sometimes almost from the 
base. Lower leaves obovate, spathulate 5 stem leaves linear, lanceolate, 
nearly of the same size to the summit of the stem. Flowers in small 
loose heads, forming a very irregular corymb. Calycine wings much long- 
er than the capsule, oval, lanceolate, mucronate, but never forming com. 
pact, squarrose heads as in the following species. Calycine wings and the 
