DIADELPHIA OCTANDRIA. 
18 f 
keel of the corolla greenish yellow. Seeds under a microscope slightly 
hispid. 
Grows in ponds in the flat pine barrens intermingled with the P. Co- 
rymbosa. 
Flowers June— August. 
14. Balduini. Nutt. 
P. caule erecto, su- 
perne ramoso ; foliis 
inferioribus spathula- 
tis, obtusis ; caulinis 
lanceolatis; floribus ca- 
pitato-corymbosis, ca- 
pitulis squarrosis, alis 
calycinis setaceo-aeu- 
minatis. 
Nutt. 2. p. 90. 
Stem erect, branch- 
ing near the summit; 
lower leaves spatliu- 
late, obtuse ; stem 
leaves lanceolate; flow- 
ers capitate, heads 
squarrose, corymbose; 
calycine wings with a 
setaceous acumi nation. 
Stem 2 — 3 feet high, slightly angled. (Radical leaves spathulate, ob- 
tuse ; Nuttal :) stem leaves small, diminishing towards the summit, 
lanceolate. Flowers in small heads, forming an irregular corymb, very 
squarrose from the setaceous acumination of the calycine wings. Ca- 
lycine wings and Corolla yellowish white. Carina scarcely if at all 
fimbriated. Seeds minutely hispid. 
This plant was sent to me by the late Dr. Baldwin, as the P. Acumina- 
ta, a name which the structure of the calycine wings renders very appro- 
priate. 
Grows in the southern districts of Georgia near St.*Mary ? s. 
Flowers June — August. 
15. C ORYMBOSA. 
P. caule erecto, te- 
reti, sub nudo ; foliis 
inferioribus longis,lin- 
eari-Ianceolatis, cau- 
linis subulatis, superne 
minutis ; floribus ra- 
cemoso-corymbosis ; 
Stem erect, terete, 
nearly naked ; lower 
leaves long, linear-lan- 
ceolate, stem leaves 
subulate^minute near 
the summit ; flowers 
in corymbose ra- 
