72 BOOTT, DE CARICIBUS. 



longo-ellipticis, acuminatis, cylindrico rostratis, bifurcatis, 

 divergentibus, sub 12 nerviis stramineis, squama lanceolata 

 acuminata, hispido-aristata longioribus latioribusque. C. 

 ampullacea, Deivey, &c. C, physocarpa, Sartwelly Herb. 

 Boott. C. bullata, (3. Fries? Nov. PL Suec. man. altera 

 Upsalia, 1839. 



Hab. In America Boreali, e civitate Ohio, Sartwell: ad 

 " Cumberland House/' Richardson : in montibus Saxosis. 

 Drummond: ad littera Oceani Pacifici, Garry. — In Nor- 

 vegia ?-prope Christianam, Blytt. {Herb. Tuckerman.) 

 Culmus 2-3 pedalis, basi spongiosus, crassus, apice leevis 

 vel scaber, inter spicas scabriusculus pars spicas gerens 

 9-12 poll, longa. Folia 4§ lin. lata, culmo multum longiora, 

 glauca, nodosa, striato-nervosa, carina margineque scabra 

 basi culmum amplectentia. Bracteee culmum longe supe- 

 rantes, auricula obtusa amplectens, rarius vaginata. Vagina 

 interdum pollicaris. Spicae masculae 3-4 rarius 5 vel 2, 

 graciles, 1-2^ poll, longse, lineam latae ; inferiores bracteatse, 

 interdum apice foemineae : squamae lanceolatae, acutee, pallide 

 ferrugineee, apice albo-hyalinae. Spicae foeminae saepe 3- vel 

 2- rarius 4-5, crassae, 2|-4 poll. longae, 7-8 lin. latae intervallis 

 ]|-3| poll, remotee, superiores sessiles, aliquando apice 

 masculae, rarius basi spicula altera auctee, quasi geminate : 

 inferiores brevi pedunculatae, apice densi-basi laxi-norae (in- 

 fima, uno specimine, basi composita.) Squamae ovato-lanceo- 

 latee acutissimae, inferiores praecipue in aristam longam sca- 

 bram productae (perigyniis vix breviores.) Pedunculus 

 infimus 8-12 lin. longus, laevis. Perigynium 4£ lin. longuifl* 

 l£ lin. latum, oblongo ellipticum, acuminatum, cylindrico- 

 rostratum, bifurcatum divergens. Achenium lineam lon- 

 gum, f lin. latum, triquetro-obovatum, papilloso-asperuluca 

 vel punctulatum. 



In speciminibus bene expositis satis a typis C. ampulla*** 

 et C. vesicaria distinguenda : in minoribus proxime & 

 C. ampullaceam accedit. Ab utrinque squamis fcemind 3 

 longe hispido aristatis satis differt, — a C. vesicaria omnibus 



