I MOiNANDKlA. DIGYNIA. calhtrighe. 



2. C.aufumnalis L. : leaves all linear, 1 -nerved, truncated 

 or emarginate, seeds with acute margins; flowers perfect. 

 Wilid. Spec. 1. p. 29. Mich. Fl. I. p- i'. Roem. <$/• 

 Schult. I. p. 47. C. linearis Pursh Fl. I. p. 3. 



Fooc annual. Siem floating, somewhat branched, bifistulous and 

 diaphanous. Leaves spreading, very narrow, generally emar- 

 gbate, or slightly bifid at the end ; the uppermost ones some- 

 what lanceolate and 3-nerved. Calyx shorter than the ger- 

 men, obtuse ? Cu/isule very short, margin more or less acute, 

 (membranaceous in the European plant. JVa hi end erg.) 

 Hab. In similar situations with No. 1, and perhaps not a distinct 

 species. In a pc-nd near Williamsburg, Long-Island. In small 

 streams about Williamstown, Massachusetts. Dewey. 



3. C. terrestris R af. : procunfibent, diffused ; leaves ob- 

 long, uniform, rather obtuse ; capsule grooved on the margin. 

 Raftnesque in Med. Repos. XI. p. 358. Roem, ir 

 Schult. 1. p. 47. Muhl. Cat.^. ll DesvauxJour. 

 de Bat. I. p. 223. C. brevifolia P ur s h FIA. ^. 3. Roe m, 

 <$-• Schult. 1. c. 



Rooe annual. Siem creeping, densely covering the earth on 

 Avhich it grows. Leaves crowded, short, obtuse, succulent, 

 nerves obsolete. Flowers polygamous, the upper ones per- 

 fect. Cafisule very short and broad, emarginate, with a deep 

 groove as if a re-entering angle on the margin. Stamen very 

 short. Styles 2, recurved. 

 Hab. In swamps and on the muddy borders of ponds and rivers. 

 June — August. On the banks of the Passaic, New-Jersey. 

 Near Babylon, Long-Island. In muddy places in New-Jersey. 

 R afi n e s q ue. Sandy barren grounds near mill-ponds. 

 New-York to Virginia. P urs h. In Pennsylvania. Muh l- 

 enb erg\ 



4. BLITUM. L. 



Calyx 3-cleft. Corolla o. Seed 1, covered by the 

 Ciilyx, wliicli enlarges, and becomes a berry. Gen. pi. 

 18. JVutt. Gen. I. p. 4. Roe?n. ^ Schult. 

 Gen. 40. Jtiss. Gen. p. 86. La?ju III. t. 59. 

 Nat. Ord. Atriplices. Juss. 



1. B. capitatum L.: procumbent: leaves triangular-has- 

 tate; heads alternate, in a terminal leafless spike. Mich, 

 Fl. I. p. 2. Willd. Spec. I. p. 30. Pursh FL I. p. 4. 

 Roem. ir Schult. I. p. 48. 



Root annual. Stem a foot high, branched. Leaves with acute 

 angles, deeply toothed. Heads round, sessile, about a fourth 

 of an inch in diameter, approximated on the extremities of the 

 branches, consisting of 30 or 40 minute flowers. Segments of 



