. The Cactaceae : descriptions and illustrations of plants of the cactus family. ECHINOCEREUS. 31 Collected near Guaymas, Mexico, March 10, 1910, by Rose, Standley, and Russell (No. 12570, type), and by Ivan M. Johnston, April 14, 1921 (No. 3103). It also was found as far south as Topolabampo, Sinaloa, March 23, 1910, by Rose, Standley, and Russell (No. 13349) and at San Pedro Bay, Sonora (No. 4291), and at San Carlos Bay, Sonora (No. 4344), by Mr. Johnston in 1921. It is related to E. reichenbachii, but is very distinct from it. Mr. Johnston's No. 3103 flow- ered in Washington, July 22, 1921.
. The Cactaceae : descriptions and illustrations of plants of the cactus family. ECHINOCEREUS. 31 Collected near Guaymas, Mexico, March 10, 1910, by Rose, Standley, and Russell (No. 12570, type), and by Ivan M. Johnston, April 14, 1921 (No. 3103). It also was found as far south as Topolabampo, Sinaloa, March 23, 1910, by Rose, Standley, and Russell (No. 13349) and at San Pedro Bay, Sonora (No. 4291), and at San Carlos Bay, Sonora (No. 4344), by Mr. Johnston in 1921. It is related to E. reichenbachii, but is very distinct from it. Mr. Johnston's No. 3103 flow- ered in Washington, July 22, 1921. Figure 34 is from a photograph made in Washington from a living plant collected by Rose, Standley, and Russell at Topolabampo, Mexico. 40. Echinocereus roetteri (Engelmann) Rumpler in Ftirster, Handb. Cact. ed. 2. 829. 1885. Cereus dasyacanthus minor Engel- mann, Proc. Amer. Acad. 3: 279. 1856 Cereus roetteri Engelmann, Proc. Amer. Acad. 3: 345. 1856. Echinocereus kunzei Giirke, Mcnats- schr. Kakteenk. 17: 103. 1907. Cespitose, or perhaps sometimes simple and occasionally budding above, 1 to 2,5 dm. high; ribs 13, straight, more or less undulate; areoles circular, or a little longer than broad, about 1 cm. apart; radial spines 15 to 17, aci- cular, about 1 cm. long, white or pur- plish; central spines 1 to 5, not in a single row, a little stouter but scarcely longer than the radials; flowers appear- ing below the top of the plant, large, 6 to 7 cm. long, perhaps even broader than long, light purple; outer perianth-segments greenish yellow; inner perianth-segments oblanceolate, acute, 3 to 4 cm. long; ovary and fruit spiny. Type locality: Near El Paso, Texas. Distribution: Southwestern Texas; Chihuahua, near El Paso, and southeastern New Mexico. Echinocereus kunzei which we have referred here as a synonym is usually stated to be from Arizona. It was doubtless sent out from Phoenix, Arizona, where Dr. Kunze lived, but we have a specimen in the U. S. National Herbarium labeled &q
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Keywords: ., bookauthorbrittonnathaniellord1, bookcentury1900, bookdecade1910
