254 THE CACTACEAE. 
Add to illustration: Bull. Agr. Exper. Sta. N. Mex. 78: pl. 11, 12; North Amer. 
Fauna 7: pl. 9; Pac. R. Rep. 4: pl. 17, f. 1 to 4; Stand. Cycl. Hort. Bailey 4: f. 2609. 
On page 57, vol. 1, under Opuntia acanthocarpa, add to illustration: Stand. Cycl. 
Hort. Bailey 4: f. 2606; Gartenwelt 11: 75. 
On page 57, vol. 1, under Opuntia echinocarpa and O. parryt, respectively, add the 
synonyms: Cactus echinocarpus and C. parryt Lemaire, Cactées 88. 1868. 
On page 58, vol. 1, under Opuntia bigelovii, add to illustrations: MacDougal, Bot. N. 
Amer. Des. pl. 47: Shreve, Veg. Des. Mt. Range pl. 4; Contr. U.S. Nat. Herb. 16: pl. 10; 
Stand. Cycl. Hort. Bailey 4: f. 2607; Karsten and Schenck, Vegetationsbilder 4: pl. 40, B. 
On page 61, vol. 1, under Opuntia cholla, insert: Opuntia chella (Index Kew. Suppl. 
1! 302) is a typographical error for O. cholla. 
On page 62, vol. 1, under Opuntia versicolor, add to illustrations: Carnegie Inst. 
Wash. 269: pl. 8, f. 81; pl. 9; MacDougal, Bot. N. Amer. Des. pl. 58; Plant World 9”: f. 50. 
On page 63, vol. 1, under Opuntia imbricata, add the synonym: Cactus imbricatus 
Lemaire, Cactées 88. 1868. Also add to distribution: Oklahoma. 
Insert: Rydberg (Fl. Rocky Mountains 576. 1917) reports this species from Utah 
under the name of Opuntia arborescens; we have seen no specimens of it from Utah. 
Insert: Cactus subquadriflorus Mocifio and Sessé (De Candolle, Prodr. 3: 471. 1828), 
given as a synonym of Opuntia rosea, doubtless belongs here. Schumann’s reference, C. 
quadriflorus, is incorrect. C. subquadrifolius (Cactaceae 3: 65) is a clerical error. 
Add to illustrations: Dict. Gard. Nicholson Suppl. 179. f. 195, as Opuntia decipiens; 
Dict. Gard. Nicholson 4: 581. f. 52, as O. rosea; Stand. Cycl. Hort. Bailey 4: f. 2608; Engler 
and Drude, Veg. Erde 13: f. 28, in part; Gartenwelt 4: 159, as O. arborescens; Bot. Jahrb. 
Engler 58: Beibl. 129: 33. f. 10. 
On page 66, vol. 1, under Opuntia tunicata, add to illustrations: Garden 13: 107,* 
as Opuntia exuviata; MOllers Deutsche Gart. Zeit. 25: 476. f. 9, No. 7; Goebel, Pflanz. 
Schild. 1: f. 36, as O. stapeliae; Contr. U. S. Nat. Herb. 10: pl. 17, f. A. 
On page 68, vol. 1, under Opuntia fulgida, add to illustrations: MacDougal, Bot. 
N. Amer. Des. pl. 57, as Opuntia mamillata; MacDougal, Bot. N. Amer. Des. pl. 87. 
On page 68, vol. 1, under Opuntia spinosior, insert: This plant is sometimes found in 
the trade as Opuntia arborescens spinosior (see Grassner). 
Add to illustrations: Emory, Mil. Reconn. App. 2. f. 10, as Opuntia arborescens; 
Shreve, Veg. Des. Mt. Range-pl. 2, a. 
On page 71, vol. 1, under Opuntia vestita, insert: Illustration: Méllers Deutsche Gart. 
Zeit. 25: 476. f. 9, No. 8. 
On page 73, vol. I, under Opuntia clavarioides, add to illustrations: Garden 13: 107, 
as Opuntia clavariordes ‘cristata; Rother, Praktischer Leitfaden Kakteen 106; Mollers 
Deutsche Gart. Zeit. 15: 67; 25: 476. f. 9, No. 19; Thomas, Zimmerkultur Kakteen 59; 
Wiener Ill. Gart. Zeit. 28: f. 18; Monatsschr, Kakteenk. 32: 131. 
On page 73, vol. 1, under Opuntia salmiana, insert: Extend range to central Argentina 
and habit to rocky hillsides (according to W. B. Alexander). 
_ On page 75, vol. 1, under Opuntia subulata, add to illustrations: Deutsche Gart. 
Zeit. 8: 32, as Pereskia subulata; Haage and Schmidt, Haupt-Verz. Kakteen 1919: 169; 
Goebel, Pflanz. Schild. 1: f. 35; M@éllers Deutsche Gart. Zeit. 25: 476. f. 9, No. 15. 
; On page 78, vol. 1, under Opuntia cylindrica, add to illustrations: Méllers Deutsche 
Gart. Zeit. 25: 476. f. 9, No. 12; Gartenwelt 15: 539; Rother, Praktischer Leitfaden 
Kakteen 107; Cact. Journ. 1: 100; Schelle, Handb. Kakteenk. 42. f. 4, as Opuntia cylin- 
drica cristata; Wiener Illustr. Gartenz. 29: f. 22, No. 10; De Laet, Cat. Gén. f. 88; 
Monatsschr. Kakteenk. 13: 71; Schelle, Handb. Kakteenk. 42. f. 3. 
*This illustration is very poor and is only tentatively referred here. 
: . P If i i i ight infer 
from the account which accompanies the illustration, it may refer to a for Pcie tition CoO cahinn 
m of Opuntia prolifera or O. echinocarpa. 
