TRANS. OF THE ACAD. OF SCIENCE. 
teretibus rigidis strietis; capitulis paucioribus minoribus in 
paniculam strictam dispositis; stamkiibus sepala fere sequan- 
tibus, antheris lineari-oblongis filamento pluries (quater seu 
ultra) brevioribus; capsula calyci aequilonga seu rarius exser¬ 
ta; seminibus minoribus.— J. scirpoides, Chap. 494 in part. 
a. macrostylus: sepalis aequalibus seu saepius exterioribus 
brevioribus; stylo elongato, capsula plerumque lageniformi.— 
J. macrostemon, Gay, in La Harpe, 140. 
b. br achy stylus: sepalis aequalibus seu plerumque exteriori- T 
bus, longioribus, stylo perbrevi.— J. echinatus , Muhl. Gram. 
207 ? J . scirpoides, Lamarck in Herb.! Gray, Man. ed. 2, 481. 
Var. (3. echinatus: caulibus (l|-3-pedalibus) foliisque tere¬ 
tibus rigidis strietis; capitwlis paucioribus majoribus in pani¬ 
culam simplicem dispositis; sepalis exterioribus plerumque 
longioribus stamina dimidia seu tertia parte superantibus; • 
antheris filamento (dupio triplove) brevioribus; stylis abbre- 
viatis; capsula sepalis aequilonga seu rarius exserta; seminibus 
minoribus.—J. echinatus, Ell. Sk. 1, 410 ; J. megacephalus, 
Curtis, in Boat. Jour, N. H. 1,132; J. polycephalus, a . La 
Harpe, 140; J. scirpoides. Chap. 1. c. in part. 
V sly. y. polycephalus: caulibus (2-4-pedalibus) compressis 
erectis seu flaecidis hinc decumbentibus; foliis a latere com¬ 
pressis gladiatis; panicula effusa deeomposita et ultra; capi¬ 
tulis majoribus ; stylis abbreviate; capsula exserta.— J. poly- ^ 
cephalus, Ell. 1, 409; Chapm. 494 ; J, polycephalus, a. Michx. 
1. c.; Pursh, 1. c.; Mey. June. 33; J. polycephalus, y. La Harpe, 
140. 
a. minor: caulibus capitulisque paulo minoribus ; sepalis 
aequalibus trinerviis; antheris filamentum fere aequantibus; 
seminibus majoribus fusiformibus. 
b. major: caulibus capitulisque majoribus sepalis uninerviis 
exterioribus interiora tenuia superantibus ; antheris filamento 
brevioribus; seminibus obovatis abrupte apiculatis. 
A southern species, which extends northeastward as far as 
Pennsylvania and New Jersey. Var. a. a. I have only seen 
from South Carolina, Hb. n. 67 (the form with lobed heads), 
to Florida, Alabama and Texas; a. b. is distributed over the 
whole range of the species, from New Jersey and Pennsyl¬ 
vania, Hb. n. 65, to South Carolina, Hb. n. 66, Arkansas and 
Texas. Var. 0. has been found from Maryland to Florida, 4. 
Hb. n. 68 and Texas; Var. y , a. from North Carolina to 
Florida, Hb. n. 69, and var. y. b. from the same States west¬ 
ward to Louisiana, Arkansas and Texas. There must be 
some error in La Harpe's statement that La Pylaie found J. 
macrostemon in Newfoundland; perhaps he took the large¬ 
headed form of J. nodosus for it.—It flowers, according to lat¬ 
itude, from June to August. 
I comprise under the name of J. scirpoides a number of 
forms, several of which have often been taken for distinct 
