REBUTIA. 



47 



Illustrations: Bliihende Kakteen 2: pi. 109; Monatsschr. Kakteenk. 28: 139, as Echi- 

 nocactus fiebrigii. 



Figure 59 is copied from the first illustration above cited. 



3. Rebutia pseudominuscula (Spegazzini). 



Echinopsis pseudominuscula Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 488. 1905. 

 Simple or somewhat cespitose, globular to short-cylindric, 5 em. high, 3.5 cm. in diameter, 

 strongly tubercled ; the tubercles about 5 mm. high; areoles elliptic, gray-felted; radial spines 7 to 14, 

 setaceous, 3 to 5 mm. long, at first yellowish or rose-colored; central spines 1 to 4; flowers from the 

 lower half of the plant, red, 2.5 cm. long, with a slender funnelform tube; scales on ovary and flower- 

 tube few, the axils hairy; perianth-segments oblanceolate to spatulate, 15 to 18 mm. long, obtuse, 

 sometimes mucronate; stigma-lobes 6, white. 



Type locality: Mountains, 3,500 meters altitude, province of Salta, Argentina. 

 Distribution: Known only from the type locality. 



Echinocactus pseudominusculus Spegazzini (Anal. Mus. Nac. Buenos Aires III. 4: 

 488. 1905) was given as a synonym of this species when first described. 

 Figure 58 is from a photograph contributed by Dr. Spegazzini. 



Fig. 60. Rebutia pygmaea. 



Fig. 60 a. Plant and section of stem of Rebutia steinmannii. 



4. Rebutia pygmaea (R. E. Fries). 



Echinopsis pygmaea R. E. Fries, Nov. Act. Soc. Sci. Upsal. IV. I 1 : 120. 1905. 

 Simple, ovoid to short-cylindric, 1 to 3 cm. long, 1 .2 to 2 cm. in diameter, or sometimes branched 

 with 2 to many short joints from a much thickened root; tubercles small, more or less arranged into 

 8 to 12 spiraled rows; areoles narrow, somewhat lanate; spines all radial, 9 to 11, short, appressed, 

 2 to 3 mm. long, acicular, somewhat swollen at base; flowers from the lower part of the plant, some- 

 what curved at base, becoming nearly erect, 18 to 25 mm. long, rose-purple; scales on ovary and 

 flower-tube small, hairy in their axils; fruit globular, 6 mm. in diameter. 



Type locality: Yavi, province of Jujuy, Argentina. 



Distribution: Bolivia and northwestern Argentina. 



We have studied living plants collected by Dr. Rose at Oruro, Bolivia. 



Illustrations: Nov. Act. Soc. Sci. Upsal. IV. i 1 : pi. 8, f. 1 to 3, as Echinopsis pygmaea. 



Figure 60 is copied from the illustration above cited. 



5. Rebutia steinmannii (Solms-Laubach). 



Echinocactus steinmannii Solms-Laubaeh, Bot. Zeit. 6s 1 :i33- 1907. 

 Small oblong plants (about 2 cm. high) 1 to 1.5 cm. in diameter; ribs low, often spiraled, 

 tubercled; spines acicular, about 8; flowers from the side of the plant, erect, campanulate; outer 

 perianth-segments oblong, apiculate ; inner perianth-segments rounded. 



