BOTANICAL REPORT. 



and the New Mexican EvhhimwUis i,<, }>! ,nir< ltl th,t^ the Mexican Erh. humping Lem. 

 and perhaps the South American Ech. (hVtrm, Leni., and Vv/,. CiimnmHi'ri, Salm, am 

 probably one or two others, form the small group of Erhhiorarti, with the appearand 

 of MamWana (Thehhlci, tuhervulis spintlifrr flispnsitis rfisfmctis, Salm, Cart. I Fort 

 Dyck 1849, cult p. 34). They constitute the closest and most imperceptible transi- 

 tion to Mam'iUarla subgen. Coryphantha, Synops. Cact., p. 8, which bear the flower: 

 in the axils of the nascent tnbercnles, the flower-bearing and the spine-bearing areola 

 bcino- connected by a woolly groove. In M. macromcri*, Engelmann, thev come fron 

 the middle of the tuberenle (Cact Mex. Boundary, t. 15, £ 4), and in the Thehide 

 they advance to the top of the tnbercnle close to the spines, thus assuming the positioi 

 which the flowers regularly occupy in the genus EcMnocacttis (see Cact. Mex. Hound, t 

 20, f. 2 ; t 21 ; t. 25, f. 1 ; t. 27, f. 1 ; t. 28, f. 2)4 



The ovary is also almost naked, like that of MmnWuna generally, or has only s 

 few scales, like that of M. wan-omens. On the other hand, the dry fruit, such as a 

 often found in EcliinoracfifS, but never in MamiUmia, the tuberculated black seeds, am 

 especially the large and curved embryo, and the presence of an albumen, do no 

 permit a separation from EcHnocactus. 



This so,ri,s is farther inh-ivstin" because it agmn strikiuglv proves that tin 



- 



niained the only one ever obtained of this pretty species. 



,., im.. forme ni. exertion. In this species, the flowers are situated exactly a 



ase of the tubercle, and oimec-ted with tin- distinct spinifeioiis areola by a woolly groove, i 



