CORYPHANTHA. 



49 



than the others, porrect or slightly curved outward, others erect; flowers several, from near center 

 of plant, 5 cm. in diameter or more, yellow, with a red center; inner perianth-segments lanceolate, 

 apiculate; filaments reddish; style greenish yellow, exserted beyond stamens; stigma-lobes 7 to 10, 

 yellow, notched at apex;* fruit oblong, greenish; seeds oblong, shining, dark brown. 



Type locality: Industry, Texas. 



Distribution: Southern Texas. 



The herbarium sheets of this plant, sent us from the Missouri Botanical Garden, con- 

 tain seeds, fruit, and style. Dr. Coulter speaks of seeing the spines of the type. 



The name Mammillaria sulcata, first given by Engelmann, was changed by him to 

 M. calcarata on account of M. sulcata Pfeiflfer, but this was a later name and hence can 

 not replace Engelmann's first one. 



This species was collected by Lindheimer at Industry, Texas, growing with Mammil- 

 laria similis, but while the two are similar in habit, this plant differs from M. similis in 

 having green fruit and brown oblong seeds instead of red fruit and black globose seeds, as 

 well as in other ways. It has not been collected much in recent years and its characters 



Fig. 49. — Coryphantha sulcata. 



and range have been involved with other species. Miss Ellen D. Schulz sent us plants from 

 San Antonio, Texas, in June 1921, and Robert Runyon sent us plants and photographs in 

 1922, which have enabled us to restudy the species in connection with its type now kept in 

 the Engelmann Herbarium in the Missouri Botanical Garden. 



Mammillaria goerngii was given by Haage (Cact. Kultur ed. 2. 183. 1900) as a new 

 name for M. calcarata. 



Illustrations: Cact. Mex. Bound, pi. 74. f. i, as Mammillaria calcarata; Monatsschr. 

 Kakteenk. 27: 65, as Mammillaria radians sulcata. 



Plate X, figure i, shows a plant photographed by Robert Runyon at Sabinal, Texas, 

 April 28, 1922. Figure 49 is from a photograph of four fruits sent by Professor Albert Ruth, 

 of Polytechnic, Texas, in 1922. 



* Whether this is a constant character we do not know, but we have observed it in three flowers, all from the same 

 plant. It has not been noted before in any other species of Coryphantha. 



