( 3107 ) 

 Echinocactus Ottonis. Mr. Otto's 



ECHINOCACTUS. 



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Class and Order. 



IcOSANDRIA MoNOGYNIA. 



( Nat. Ord. — Cacteje. ) 



Generic Character. 



Sepala numerosa imbricata basi ovarii adnata in tubum 

 brevissimum concreta, exteriora involucriformia, intima 

 petaliformia. Stam. numerosa. Stylus filiformis apice 

 multifidus. Bacca sepalorum reliquiis subsquamata. Co- 

 tyledones nullae ? — Frutices simplicissimi carnosi ovati aut 

 globosi melocactoidei costati aphylli costis tuberculis conflu- 

 entibus quasi formatis, dorso aculeorum fasciculos geren- 

 tibus. Cephalium seu spadix nullus. Flores e fasciculis 

 aculeorum ad apices costarum orti, similes fioribus Cerei sed 

 tubo vix ullo donati. 



Specific Character and Synonyjns. 



Echinocactus* Ottonis; caule subcylindrico, costis 12 

 obtusiusculis, spinis mediis 3— 4-longioribus erectius- 

 culis tenuibus fuscis, reliquis 10—14 tenuissimis paten- 

 tibus longe acuminatis subserrulatis cuspidatis. 



Echinocactus Ottonis. Link et Otto, Gew. Bot. Gart. Berl. 

 t. 16. 



Cactus Ottonis. Lehm. Ind. Sem. Hort. Hamb. 1827, p. 16. 

 Ind. Schol. in Gymn. Hamb. 1828, p. 11. 



Descr. Stem, in our plant, three to four inches in height, 

 orbiculari-cylindrical, contracted at the base, where it pro- 

 duces 



* From ix»«f, a hedgehog, and x»xto?, cactus. 



