14 M0NANDR1A.— DIGYNIA. 



II. DIGYNIA. 



.3. CALLITRICHE. Haloragece. Water-Chickweed. 



1. C. verna /3. intermedia: upper leaves spathulate- 



obovate, inferior ones lined, obtuse, and emarginate ; 

 flowers polygamous; margin of the capsule obtuse. 

 HAB. Floating in shallow waters. Apr. — Aug. 0. Up- 

 permost leaves stellate, S-nerved ; flowers axillary; 

 superior ones stamenif, middle ones perfect, lowest 

 ones pistilif. 



2. C. autumnalis: leaves all linear, 1 -nerved, truncate, 



or emarginate ; capsule with an acute margin ; flow- 

 ers all perfect. 

 HAB. Floating. Aug. — Sept. ©. Somewhat branched: 

 superior leaves a little broader, and 3-nerved. 

 2. C. terrestris : procumbent, diffuse ; leaves oblong, 

 uniform, rather obtuse ; capsule grooved on the 

 margin. 

 HAB. On wet ground. Jun. — Aug. 0. Creeping, 

 small ; leaves crowded ; flowers polygamous ; capsule 

 very short, and broad. 



4. BLITUM. Atriplices. 

 1. B. capitatum: procumbent; leaves triangular-ha- 

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

 HAB. Fields and waste places. ©. Jun. Stem branched, 

 1 ft. ; heads round, sessile ; flowers crowded, incon- 

 spicuous ; calyx red when ripe. 

 £. B. virgatum : leaves triangular-hastate ; heads scat- 

 tered, lateral. 

 HAB. In similar situations as No. 1.0. June. Heads 

 all lateral ; calyx red when ripe. 

 3. B. maritimum : calyx membranaceous ; clusters axil- 

 lary, spiked, naked ; leaves lanceolate, attenuate at 

 each extremity, incisely toothed. 

 HAB. Salt marshes. Aug. 0. Erect, much branched . 

 1 — 2 ft. ; leaves succulent ; teeth few ; calyx not be- 

 coming red ; seed lenticular, vertical. 



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