468 TRANS. OF THE ACAD. OF SCIENCE. 
teretibus rigidis strictis; capitulis paucioribus minoribus in 
paniculam strictam dispositis ; staminibus sepala fere «quan- 
tibus, antheris lineari-oblongis filamento pluries (quater seu 
ultra) brevioribus; capsula calyci equilonga seu rarius exser- 
ta; seminibus minoribus.—J. scirpoides, Chap. 494 in part. 
A. macrostylus : sepalis eequalibus seu sepius exterioribus 
brevioribus ; stylo elongato, capsula plerumque lageniformi.— 
J. macrostemon, Gay, in La Harpe, 140. 
B. brachystylus: sepalis equalibus seu plerumque exteriori- 
bus, longioribus, stylo perbrevi.—J. echinatus, Muhl. Gram. 
207? J. scirpoides, Lamarck in Herb.! Gray, Man. ed. 2, 481. 
Var. 3. echinatus: caulibus (14-3-pedalibus) foliisque tere- 
tibus rigidis strictis ; capitulis paucioribus majoribus in pani- 
culam simplicem dispositis; sepalis exterioribus plerumque 
longioribus stamina dimidia seu tertia parte superantibus ; 
antheris filamento (duplo triplove) brevioribus; stylis abbre- 
viatis ; capsula sepalis equilonga seu rarius exserta; seminibus 
minoribus.—J, echinatus, Ell. Sk. 1, 410; J. megacephalus, 
Curtis, in Bost. Jour, N. H. 1, 182; J. polycephalus, a. La 
Harpe, 140; J. scirpoides, Chap. 1. c. in part. 
Var. y. polycephalus: caulibus (2-4-pedalibus) compressis 
erectis seu flaccidis hine decumbentibus ; foliis a latere com- 
pressis gladiatis; panicula effusa decomposita et ultra; capi- 
tulis majoribus; stylis abbreviatis; capsula exserta.—J. poly- 
cephalus, Ell. 1,409; Chapm. 494; J. polycephalus, a. Michx. 
it Pursh, l. ¢.; Mey. June. 333; J. polycephalus, y. la Harpe, 
140. 
A. minor: caulibus capitulisque paulo minoribus; sepalis 
equalibus trinerviis; antheris filamentum fere equantibus ; 
seminibus majoribus fusiformibus. 
B. major: caulibus eapitulisque 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. . has been found from Maryland to Florida, 
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 
