Ordo cxcvitt. 



CQUISETACE^ 



( DC. fl: fr: ed: 3. II. p. 58o. z= Vauf her monogrT 



des Preles, Paris, Geneve 1822. = Bartl: ord: iiat: 



p. 21. = EquisGtece Spr: syst: IV. p. 40* 



Char\ essentialis, 



» Spica terminalis conica ex sqnamls (receptacula) 

 » verticillatis stipitatis peltatis sub-rotiindo-poljgoms, 

 » ^'or^M^CM/f:^ capsulseformia (^sporangia Bartl: , indu- 

 » siuin corniculatum W.) suLtus receptaculis adnata 

 )) in orbem disposita membranacea introrsum longi- 

 » tudinaliter debiscentia. In singulo sporangio pkires 

 » globuli (sporce, semina acofjledonea Vauch: Bap.tl: 

 >v Srn:, stanv. W^ ) laminis quatuor (^Jili, organa ma- 

 » sculina Vauch:) elongatis elasticis bygrometricis a- 

 » pice clavatis pulvere pollinaceo conspersis arcle 

 » involuli. » 



Ohs: Ordo prse ceteris tum habitu cum fructifica- 

 tione propria naturalissimus , constans unico genere 

 (^Equisetum) et ex Vauch: et Spr: 18. stirpibus, qua- 

 rum magna pars europsea?. Plantse terrestres vel pa- 

 Justres vero caudice seu collo destitutae , rhizomate 

 repente cauliforme sub - terraneo perenni instructse, 

 «aulibus (frondes quorund: ) teretibus sulcatis vel 

 angulatis glabris vel plus minus scabris cortice varie 

 glanduloso (glandulce corlkatce Mirb:), arliculatis ad 



