34 



THE CACTACEAE. 



Plants low, almost buried in the ground; ribs usually 13, low, somewhat tuberculate; young 

 areoles bearing 6 to 8 rather stout, short, spreading spines; old areoles spineless; flowers about 5 em. 

 broad, magenta-colored; inner perianth-segments spatulate, with an ovate acute tip; filaments rose- 

 colored; areoles of the ovary and flower-tube bearing brown spines and cobwebby wool. 



Type locality: Mexico. 



Distribution: San Luis Potosi, Mexico. 



This plant has recently been introduced into Europe in great quantities. It is rather 

 inconspicuous, but has very pretty flowers. 



Echinopsis pulchella rosea (Labouret, Monogr. Cact. 292. 1853) was given as a synonym 

 of the species. 



Illustration: Monatssehr. Kakteenk. 3: 171. f. 4, as Echinopsis amoena. 



Figure 40 is from a photograph of a plant sent from San Luis Potosi, Mexico, by 

 Mrs. Irene Vera. 



45. Echinocereus palmeri sp. nov. 



Plants small, 5 to 8 cm. high, 2 to 3 cm. in diameter; areoles closely set, round; radial spines 12 to 

 15, spreading, slender, brown-tipped ; central spine one, porrect, 1 5 to 20 mm. long, brown to blackish ; 

 flower 3.5 cm. long, purple; areoles on the ovary bearing a cluster of brown spines and white wool. 



Collected by Dr. E. Palmer on a small hill near Chihuahua City, April 1908 (No. 121). 

 Only three specimens were seen, of which one was in flower. 



Fig. 41. Echinocereus brandegeei. 



Fig. 42. Echinocereus hempelii. 



46. Echinocereus brandegeei (Coulter) Schumann, Gesamtb. Kakteen 290. 1898. 



Cereus brandegeei Coulter, Contr. U. S. Nat. Herb. 3: 389. 1896. 

 Cereus sanborgianus Coulter, Contr. U. S. Nat. Herb. 3: 391. 1896. 

 Echinocereus sanborgianus Schumann, Gesamtb. Kakteen 274. 1898. 



Always growing in clumps; joints sometimes one meter long or more, 5 cm. in diameter, but 

 usually much narrowed toward the base ; ribs strongly tubercled; areoles circular; spines at first light 

 yellow tinged with red, in age dark gray; radial spines about 12, spreading, acicular; central spines 

 usually 4, very much stouter, more or less flattened, erect or porrect, the lowest one decidedly so, 

 sometimes 8 cm. long; flowers purplish, about 5 cm. long; areoles on ovary and tube closely set, 

 filled with pale acicular spines and long white wool; fruit globular, 3 cm. in diameter, spiny; seeds 

 black, tuberculately roughened. 



