154 



THE CACTACEAE. 



This species is very rare in living collections and in herbaria. When found in the field it 

 is often associated with Mammillaria grahamii and Coryphantha aggregata, which has led to 

 the suggestion that it might be a hybrid between these species. 



The plant is named for General Timothy E. Wilcox, U. S. A., who collected exten- 

 sively in Arizona, Oklahoma, Washington, and Alaska. 



Illustration: Monatsschr. Kakteenk. 24: 23, as Mammillaria wilcoxii. 



Plate XIII, figure i , is from a photograph of a plant collected at Calabasas, Arizona, 

 by Dr. Rose in 1908 (No. 11955). 



129. Neomammillaria mainae (K. Brandegee). 



Mammillaria mainae K. Brandegee, Zoe 5:31. 1900. 



Globose or somewhat depressed, 5 to 8 cm. broad; tubercles pale green, naked in their axils; 

 spines all puberulent, at least when young; radial spines about 10, widely spreading, yellowish or 

 white except the brownish tips ; central spines usually stout, yellowish except the strongly hooked 

 tip ; flowers from upper part of plant but in old axils, about 2 cm. long, with a broad open throat ; 

 outer perianth-segments with a brownish stripe, inner ones with a reddish central stripe with broad 

 nearly white margins; acute inner perianth-segments more or less spreading; stamens purplish; 

 style also purplish, stout, much longer than stamens; stigma-lobes 5 or 6, purplish, elongated, linear; 

 fruit red, globose to obovate, not projecting beyond the tubercles; seeds dull black, obovate, i mm. 

 long, punctate, with a narrow basal hilum. 



Type locality: South of Nogales, Sonora, Mexico. 



Distribution: Northern Sonora. 



For a long time it was known only from material collected by Mrs. F. M. Main, near 

 Nogales, Mexico. It has been offered in the trade under the name of Mammillaria 

 galeottii, to which, according to Mrs. K. Brandegee, it is not at all related. It was observed 

 by Rose, Standley, and Russell in two localities near Hermosillo, Sonora, Mexico, and 

 living plants were sent to Washington, which flowered in August 19 10. This is not very 

 close to any of the other species. It was collected again 

 in Sonora by C. R. Orcutt in 1922. 



Illustration: Monatsschr. Kakteenk. 22 : 19, as Mam- 

 millaria mainae. 



Figure 172 is from a photograph of a specimen sent 

 by Dr. Trelease from the Missouri Botanical Garden in 

 1910. 



130. Neomammillaria boedekeriana (Quhel). 



Mammillaria boedekeriana Quehl, Monatsschr. Kakteenk. 20 : 

 108. 1910. 



Globose to ovoid, but in collections becoming cylindric, 

 dull green; tubercles cylindric; radial spines about 20, white; 

 central spines 3, brownish black, one hooked; axils naked; 

 flowers white with brownish stripes. 



Type locality: Not cited. 



Distribution: Doubtless Mexico, but range unknown. 



This plant, which was for a long time in cultivation 

 in Europe, has, according to Mr. Bodeker, entirely dis- 

 appeared. He writes that it is a prolific bloomer and that 

 once he had a plant with 32 flowers open at the same time. 

 The species is named for Friederich Bodeker of Cologne, 

 Germany. Quehl groups this species next to Mammillaria wrightii. 



Illustration: Monatsschr. Kakteenk. 20: 109, a,s Mammillaria boedekeriana. 



Figure 172a is from a photograph of a plant which had been in cultivation 14 years 

 by Bodeker. The photograph was sent to Us in 1923. 



Fig. 1720. — Neomammillaria boedekeriana. 



