u6 



THE CACTACEAE. 



Type locality: Mexico. 



Distribution: Mexico, in the states of Hidalgo and San Luis Potosi, according to 

 Schumann. 



We know this species definitely only from Lemaire's plate which is doubtless typical. 

 According to Schumann, it has the same range as E. obvallatus, a species which, judging 

 from the illustrations, must be very near it, if not actually the same. 



A specimen collected by Rose in San Juan del Rio in 1905 has 5 spines in a cluster, but 

 the whole plant is more heavily armed than Lemaire's illustration would indicate. 



Echinocactus anfractuosus laevior Monville (Labouret, Monogr. Cact. 220. 1853) was 

 given as a synonym of E. anfractuosus pentacanthus. 



Illustration: Lemaire, Icon. Cact. pi. 11, as Echinocactus pentacanthus. 



Fig. 122. Echinofossulocactus obvallatus. 



Fig. 123. Echinofossulocactus crispatus. 



15. Echinofossulocactus crispatus (De Candolle) Lawrence in Loudon, Gard. Mag. 17: 317. 1841. 

 Echinocactus crispatus De Candolle, Prodr. 3: 461. 1828. 

 Plant obovoid, somewhat depressed at apex; ribs about 25, more or less folded, somewhat undu- 

 late; spines 10 or 11, rigid, unequal; flowers central, rather small; perianth-segments in 2 series, 

 purplish, oblong-linear, acute; flower-tube covered with imbricating scales. 



Type locality: Mexico. 



Distribution: Hidalgo, Mexico, according to Schumann. 



This species was based on Mocino and Sesse's illustration which De Candolle reproduced 

 and Cactus crispatus Mocino and Sesse (De Candolle, Prodr. 3 : 462. 1 828) was the first name 

 given to it, but it was never formally published. De Candolle, himself, does not compare it 

 with E. obvallatus which is of this series, but with E. cornigerus, belonging to a very different 

 series. After De Candolle had described the species he states (Mem. Mus. Hist. Nat. 

 Paris 17: 115. 1828) that the ribs vary from 30 to 60; this was doubtless drawn from new 

 material, perhaps sent by Thomas Coulter who was then collecting in eastern Mexico. At 

 the same place he describes var. horridus, based on Coulter's plant, and says that the spines 

 are stouter, erect, long, and grayish brown. 



