Mr. Haworth's Twelfth Decade ofnexn) Succulent Plmits. 113 



presented on tab. 195. These two fine plants (as appears by 

 a very careful examination of all the letter-press), DeCan- 

 doUe, through oversight, somewhat confuses by the name of 

 C. Jimbriatiis in the third volume of his excellent Prodromus, 

 p. 464., (and cites Lam. Diet, i, 539, which I do not possess,) 

 but makes no proper mention of the gigantic thorns of one of 

 these remarkable plants. Wherefore it will be a great service 

 to our science to re-describe both from Plumier's figures, as 

 follows, after observing that some of the synonyms appear to 

 be erroneous. 



Cereus. Miller, 4-c. 

 grandispinus. C, (Tubeless, great-spined) octangularis : acu- 

 1. leis subtrientaUbus, flore campanulato absque tubo; 

 fructu globoso spinoso. 



Cactus 8-angularis, spinis subulatis. Plum. PI. Am. 

 t. 195./. 2. 



Habitat in Dominica. ^ . 



Maximus; obtusissim^ angulatus. Sp/?;,^ fasciculate 



subulatae, 12-13 in singulo fasciculo, radianter patentes. 



Flos subtriuncialis, petalis obtuse lanceolatis serratis, 



fructu fasciculatim spinuloso, diametro biunciali, nidu- 



lantibus numerosis seminibus. 



serruliflorus. C. (Great slender-spined octangular) setis se- 

 2. muncialibus; petalis tubo quintuple brevioribus; fructu 

 subconico magno squamoso inermi. 



Habitat in Dominica. \ . 



Maximus; obtuse angulatus. Setce fasciculatae sub- 

 viginti, Eequales, in fascicul is singulis remotis, radianter 

 stellato-patentes. Petala anguste lanceolata serrulata 

 vix uncialia, tubo ^\ unciaU squamato, squamis lineari- 

 lanceolatis integris erectis. 



Cereus erectus octangularis. Plum. PI. Am. 1. 195. yil. 



Obs. Cereo hexagono simillimus, sed in spinis longe 

 numerosioribus, longioribus et tenuioribus, quoque in 

 caudicis sulcis minus profundis proculdubio diflfert. A 

 priore anomalo Cereo in omnibus fere recedit. 



Obs. The progression of time and experience, and the pre- 

 sent opportunity, enable me to amend materially, the de- 

 finitions of the following Cactecc .- and thereby to identify 

 them more completely than has heretofore been done. 



Mammillaria. Nob. 

 discolor. M. (Depressed two-coloured) simplex, bicolor ; sub- 

 1. rotundo-depressa, apice (seu apicem versus) valdc 

 di.scolorata. 

 N.S. Vol. 7. No. 38. Feb. 1830. Q Habitat 



