FEROCACTUS. 



131 



photograph taken by Dr. Win. S. Cooper, between Indio and Palm Springs, California; 

 figure 135 is from a photograph taken also by Dr. Cooper from the east base of the Laguna, 

 May 12, 1 91 9; figure 136 is from a photograph taken by Dr. MacDougal near Palm Springs, 

 California, in 1913; figure 137 is from a photograph taken by S. C. Mason near Andreas 

 Canyon, California, in 191 8. 



10. Ferocactus santa-maria sp. nov. 



Cylindric, 6 dm. high or more; ribs about 14; outer spines several, thread-like; central spines 

 in 2 series, all straight, grayish, all annulate, subulate, the central one stouter, flatter, ascending; 

 somewhat curved at tip; old flowers persisting, 6 to 7 cm. long; fruit 3 to 4 cm. long, bearing orbicular 

 scales; seeds 2 mm. long, finely reticulated. 



Collected by J. N. Rose on the shores of Santa Maria Bay, Lower California, May 18, 

 1913 (No. 16279). 



**** * 



Figs. 136 and 137. Ferocactus acanthodes. 



This plant was seen at only one locality and only small specimens were observed, 

 but much larger ones may be expected. This is a densely armed plant, peculiar in 

 having all the straight dagger-like strong central spines ascending. 



According to letters from F. Vaupel, this plant has been in cultivation in Germany for 

 several years, grown from seed, perhaps from the type collection. It is briefly mentioned 

 in the Monatsschrift fur Kakteenkunde (29: 13. 19 19) as Echinocactus santa-maria Rose. 



11. Ferocactus diguetii (Weber). 



Echinocactus diguelii Weber, Bull. Mus. Hist. Nat. Paris 4: 100. 1898. 



Plants very stout, usually 1 to 2 meters, but sometimes 3 and 4 meters, high, 6 to 8 dm. in 

 diameter or more; ribs numerous, sometimes as many as 39, rather thin; areoles large, 1 to 1.5 cm. 

 long, somewhat elliptic, approximate or on old plants coalescent; spines 6 to 8, yellow, subulate, 

 3 to 4 cm. long, slightly curved and a little spreading; flowers numerous, 3 to 3.5 cm. long; scales on 

 ovary and flower-tube ovate, closely imbricate, thin on the margin and somewhat lacerate; inner 

 perianth-segments red with yellow margins, oblong, 2 cm. long; filaments pink, numerous; tube of 

 flower below stamens very short; style yellow; fruit scaly. 



Type locality: Santa Catalina Island, off Lower California. 



Distribution: Islands of the Gulf of California. 



This species which is common on several of the islands in the Gulf of California is 

 perhaps the largest of all the visnagas or barrel cacti. On Santa Catalina Island, especially, 

 enormous individuals are to be found and here it is the most conspicuous plant. It seems 

 to have no very definite habitat, growing both on the mountain sides among the large 

 igneous rocks as well as along the old shell beaches. These plants have an enormous 

 display of surface roots with only a few weak supporting ones and consequently large plants 

 can easily be toppled over. Its spines are all very much alike. 



