264 THE CACTACEAE. 



On page 185, vol. i, under Opuntia megacantha, insert: Opiintia effulgia Griffiths (Bull. 

 Torr. Club 46: 195. 1919) was obtained from San Luis Potosi, Mexico, and grown at Chico, 

 California; 0. hispanica Griffiths (Bull. Torr. Club 46 : 198. 1919) was described from a plant 

 received from Spain and grown at Chico; 0. chaia Griffiths (Bull. Torr. Club 46: 199. 1919), 

 from Aguascalientes, Alexico, was grown at Brownsville, Texas, and at Chico; 0. ofcot'aia 

 Griffiths (Bull. Torr. Club 46: 202. 191 9) from Hepasote, Mexico, was also grown at 

 Brownsville and at Chico; O. amarilla Griffiths (Bull. Torr. Club 46: 205. 191 9) was 

 obtained in cultivation at Cardenas, Mexico, and grown at Chico. These are known to us 

 only from descriptions and appear to be races of 0. megacantha or of some of the related 

 tall, white-spined species. 



Add to illustrations: Ann. Rep. Smiths. Inst. 1917: pi. 16, f. 2. 



On page 191, vol. i, under Opuntia robusta, insert: Opuntia cyanea Griffiths (^Bull. Torr. 

 Club 46: 196. 1919) judging from the original description maybe related to 0. robusta. 



Add to illustrations: Engler and Prantl, Pfianzenfam. 3^'': f. 56, G, as Opuntia albicans. 



On page 194, vol. i, Opuntia JragiUs, add to illustrations: Watson, Cact. Cult. ed. 

 3. f. 55; Deutsche Gart. Zeit. 7: 313; Remark, Kakteenfreund 22, as Opuntia brachyarthra; 

 Schelle, Handb. Kakteenk. 56. f. 15, as O.fragilis brachyarthra; Aleehans' Monthly 11: 57. 



On page 195, vol. i, under Opuntia arenaria, add to illustration: IMeehans' Monthly 

 11:57- 



On page 195, vol. i, Opuntia erinacea, add the synonym: Opuntia ursus horribilis 

 Walton, Cact. Joum. 2: 152. 1899. 



Also add to illustrations: Cact. Joum. i: 93, as Opuntia; Mollers Deutsche Gart. 

 Zeit. 25: 476. f. 9, No. ic; Cycl. Amer. Hort. Bailey 3: 1149. f. 1548; Stand. Cycl. Hort. 

 Bailey 4: 2363. f. 2603, as O. ursina; Meehans' Monthly 4:9; Monatsschr. Kakteenk. 14: 

 105; N. Amer. Fauna 7: pi. 11, as 0. rutila. 



On page 198, vol. I, under Opuntia rhodantha, add to illustrations: Monatssch-^ 

 Kakteenk. 30: 153, as Opuntia xanthostemma. 



On page 199, vol. i, under Opuntia polyacantha, add the synonym: Opuntia missouri- 

 ensis watsonii Schumann, Gesamtb. Kakteen 735. 1898. 



Also insert : Extend range to northwestern Oklahoma. 



Add to illustrations: Rep. JNIo. Bot. Gard. 13: pi. opp. 13; Schelle, Handb. Kakteenk. 

 54. f. 14, as Opuntia missouriensis; Mollers Deutsche Gart. Zeit. 25: 476. f. 9, No. 6, as 0. 

 sch-tL'eriniana ; Scientific American 124: 492; Meehans' Monthly 11: 57; Stand. Cycl. Hort. 

 Bailey 4: f. 2604. 



On page 201, vol. i, under Opuntia grandis, add to illustration: The Garden 62: 425; 

 Mollers Deutsche Gart. 25: 476. f. 9, No. 17. 



On page 203, vol. i, under Opuntia nashii, insert: Illustration: Journ. N. Y. Bot. 

 Gard. 6:f. 3. 



On page 204, vol. i, Opuntia spinosissima, insert at end: A species of this series, 

 Spinosissimae, occurs on Navassa Island off the southeastern point of Haiti ; specimens were 

 sent us by Mr. F. P. Dillan, Superintendent of Light Houses, San Juan, Porto Rico, but 

 they are not complete enough to be specifically referred. 



On page 206, vol. i, under Opuntia moniliformis, add the synonyms: Cactus reticulatus 

 Index Kewensis i: 369. 1893;* Opuntia reticulata Karsten, Deutsche Fl. ed. 2. 2: 

 457. 1895; Opuntia picardae L^rban, Repert. Sp. Nov. Fedde 16: 35. 1919. 



On page 208, vol. i, under Opuntia rubescens, add to illustration: Carnegie Inst. 

 Wash. 269: pi. 10, f. 90. 91, as Opuntia catacantha. 



*The Index Kewensis refers Cac/us reticulatus to Descourtilz (Fl. Med. Antill. i: pi. 68), but the formal name 

 was not used by him. 



