338 CRYPTOGAMIA—FILICES. Equisetum. 



E. segetale. Ger. Em. 1114./. 



E. secundum. Matth. Valgr. v. 2. 374. Camer. Epit. 771 ./. 



E. alterum. Lob. /c. 794./. 



E. alterum, sive minus, Matthioli. Dalech. Hist. 1070./. 1, 2. 



E. minus tevrestre. Bauh. Hist. v. 3. p. 2. 723, 2.//. 



E. longius. Fuchs. Hist. 322. f. 



Hippuris minor. Dod. Fempt. 73,f,f. Trag. Hist. 694. f. Lob. 

 Ic. 794. f. 



/3. Equisetum pratense, longissimis setis. Dill, in Rail Syn. 130. 

 Bauh. Theatr. 246./. 



E. minus. Fuchs. Hist. 323. f. 



In moist cornfields^ or meadows, frequent. 



Perennial. March, April. 



Root much branched, creeping extensively, producing in the spring 

 several simple, upright, flowering stems, quite destitute of 

 branches, a span high, cylindrical, smooth, juicy, of a pale 

 brown, bearing three or four, rather distant, membranous, 

 cylindrical, brown-ribbed sheaths, with about twenty deep, 

 sharp, darker, upright teeth, or segments j and at the top a 

 solitary, ovate-oblong, brown catkin, whose scales, when ripe, 

 separate, and show the white cells, as in other species. After 

 the flowering shoots are withered the green sterile fronds ap- 

 pear, twice or thrice as long as the former, either upright or 

 decumbent, beset from top to bottom with many whorls of slender, 

 jointed, spreading, roughish, green branches, mostly simple, with 

 simple angles ; the lower ones sometimes elongated or branched } 

 their joints surmounted by small pale sheaths. These fronds are 

 reckoned unwholesome to such animals as feed upon them in 

 autumn, especially swine. 



The flowering stems were mistaken by Mr. Lawson for our E. varie- 

 gatum, n. 7, under whose synonym they are mentioned in Rail 

 Syn. 130. n. 3, not without a proper warning from Dillenius. 



4. E. paliistre. Marsh Horsetail. 



Stem deeply furrowed, branched throughout, with a ter- 

 minal catkin ; branches simple, erect, roughish, with 

 simple angles. 



E. palustre. Linn. Sp. PI. 1516. TVilld. v. 5. 5. Fl. Br. 1103. 



Engl. Bot.v. 29. t. 2021. Hook. Scot. p. 2. 16\. Bolt. Fil.64. 



t. 35. Fl. Dan. t. 1 183. Raii Sijn. 131. Lob. Ic. 795. f. Ger. 



Em. 1114./. Ehrh. Crypt. 6\. 

 E. n. 1677. Hall. Hist. ?;. 3. 2 3 excluding most of the varieties. 

 /3. E. palustre, tenuissimis et longissimis setis. Bauh. Prodr. 24 ? 



Raii Syn. 131 ? 

 E. palustre minus polystachion. Bauh. Prodr, 24. Dill, in Raii 



Syn. ]3\.t.5.f.3. 



