260 ‘ THE CACTACEAE. 
Schelle, Handb. Kakteenk. 50. f. 12; Belg. Hort. 26: pl. 8; Illustr. Hort. 15: pl. opp. 51; 
Deutsches Mag. Gart. Blumen. 1869: pl. 17, opp. 257, as O. rafinesquet; Kraemer, Appl. 
Econ. Bot. f. 341. 
On page 130, vol. I, insert: 
121a. Opuntia eburnispina Small, sp. nov. 
Prostrate, widely branched and forming mats on dune sands, with tuberous roots; joints oval 
or suborbicular, varying to broadest above middle, thickish, 6 to 13 cm. long, pale green, somewhat 
shining, especially when young; leaves ovoid-subulate, 4 to 5 mm. long, pale green, recurved- 
spreading; spines relatively stout, 2 to 4 at an areole or sometimes solitary, 1 to 2 cm. long, ivory- 
white with yellowish tips when young, becoming dark gray, not spirally twisted, greenish when wet; 
flowers few; ovary obconic; sepals triangular, green, 5 to 7 mm. long; corolla clear yellow, 4 to 5 
cm. wide; petals few, narrowly cuneate, often minutely pointed; berries obovoid, 2 cm. long or less. 
Coastal sands, Cape Romano, Florida. Type specimens in the herbarium of the New 
York Botanical Garden; collected in May 1922, by J. K. Small. 
Figure 237 is from a photograph by Dr. Small of the type plant. 
oe eae ext 
Se ae es 
Fic. 237.—Opuntia eburnispina. 
On page 131, vol. I, under Opuntia macrorhiza, add to illustrations: Watson, Cact. 
Cult. ed. 3. f. §9; Dict. Gard. Nicholson 4: 580. f. 50, 51. , 
On page 131, vol. 1, under Opuntia tortispina, add the synonym: Opuntia cymochila 
montana Englemann, Proc. Amer. Acad. 3: 296. 1856. 
Also add to distribution: Southeastern Colorado. Established and slowly spreading 
east of Cincinnati, Ohio (E. T. Wherry). 
Also add to illustrations: Watson, Cact. Cult. ed. 3. pl. opp. 102; Meehans’ Monthly 
II: 57, as Opuntia mesacantha; Meehans’ monthly §: 172, as O. oplocarpa. 
On page 134, vol. 1, Opuntia sulphurea, insert: Mr. W. B. Alexander writes as follows 
concerning this species: 
This is by far the commonest species of Opuntia in the Argentine, where it is commonly 
known as ‘penca,’ i. e. the spiny plant, sometimes being distinguished from other larger species by 
the name ‘penquilla’ or ‘penca chica.’ The writer met with it in the provinces of Buenos Aires, 
Cérdoba, San Luis, Mendoza, San Juan, La Rioja, Catamarca and Santiago del Estero.” 
Add to illustrations: Wiener Ill. Gart. Zeit. 28: f ; 
. . . e . , th ; 
Mollers Deutsche Gart. Zeit. 25: 476. f. 9, No. 18. 17, as Opuntia maculacanina 
