APPENDIX. 283 



Stems much elongated, 3-angled, 2 to 6 cm. broad, bluish or whitened, somewhat glaucous; 

 ribs often thin; margins of ribs not horny, nearly straight, areoles distant, sometimes 6 cm. apart; 

 spines brown, 2 or 3, very short, much swollen at base. 



In the shape, number, and size of spines this specimen resembles H. lemairei, but 

 differs from it in the whitened stems. We do not know its flowers. 



On page 197, vol. 11, under Selenicereus grandiflorus, insert: Cereus haitiensis Hortus 

 is cited by Schelle (Handb. Kakteenk. 89. 1907) as a synonym of C. grandiflorus. 



Cereus grandiflorus flemingii Riimpler (Forster, Handb. Cact. ed. 2. 751. 1885; C. 

 flemingii, Monatsschr. Kakteenk. 3 : 109. 1893) is said to be a hybrid between C. grandiflorus 

 and C. speciosissimus. 



Add to illustrations: Fl. Serr. 3: pi. 1-2, as Cereus grandifloro-speciosissimus ; Bait. 

 Cact. Journ. i: 56, as queen of the night; Remark, Kakteenfreund 8; Gartenflora 42: 

 541. f. no; 64: 90. f. 22; Gartenwelt 16: 613; 19: 18; Gard. Chron. iii. 14: 187. f. 36; 

 Thomas, Zimmerkultur Kakteen 15; Tribune Hort. 4: pi. 139; Blanc, Cacti 32; De Laet, 

 Cat. Gen. f. 29; Fl. Serr. 3: 233-234; Weinberg, Cacti 8; Knippel, Kakteen pi. i; Goebel, 

 Pflanz. Schild. i: pi. 2, f. 5; Mollers Deutsche Gart. Zeit. 14: 340 to 343; 20: 561, as 

 Cereus grandiflorus; Cafiizares, Jard. Bot. Inst. Habana 100. 



On page 198, vol. 11, under Selenicereus urbanianus, add to illustrations: Gartenwelt 

 12: 255, as Cereus urbanianus; Roig, Cact. Fl. Cub. pi. [3,] f. 2; pi. [4], as Selenicereus 

 maxonii. 



On page 199, vol. 11, under Selenicereus coniflorus, insert: Dr. J. K. Small finds this 

 plant naturalized in pinelands near the Everglades, west of Halenville, Florida. 



On page 200, vol. 11, under Selenicereus pteranthus, also add to illustrations: Garden 

 13: 291; Monatsschr. Kakteenk. 31: 71; Watson, Cact. Cult. 63. f. i5;ed. 3. f. 10; Garten- 

 flora 41 : f. 23, 24, as Cereus nycticalus. 



Add the synonym: Cereus nycticalus peanii Beguin in Riccoboni, Boll. R. Ort. Bot. 

 Giard. Col. Palermo 8: 252. 1909. 



On page 202, vol. 11, under Selencereus boeckmannii, add to illustration: Bliihende 

 Kakteen 3: pi. 175, 176, as Cereus boeckmannii. 



On page 202, vol. 11, under Selenicereus macdonaldiae , add the synonym: Cereus 

 grandiflorus macdonaldiae Blanc, Cacti 34. 



Also insert: Cereus kewensis Worsley (Journ. Roy. Hort. Soc. 39: 92. 1913) is said to 

 be a "garden hybrid between C. macdonaldiae and probably C. nycticalus." 



Also add to illustrations : Blanc, Cacti 34. No. 206, as Cereus grandiflorus macdonaldiae; 

 Monatsschr. Kakteenk. 30: 107; Gartenwelt 16: 537; Mollers Deutsche Gart. Zeit. 25: 

 488. f. 22, No. 6, as Cereus macdonaldiae, Bliihende Kakteen 3: pi. 166, 167, as Cereus 

 grusonianus. 



Insert: Cereus rothii Weingart (Monatsschr. Kakteenk. 32: 146. 1922) is of this rela- 

 tionship. It is a new name for the plant from South America called Cereus macdonaldiae 

 by Spegazzini; we have not seen it. 



On page 204, vol. 11, under Selenicereus hamatus, add to illustrations: Tribune Hort. 

 4: pi. 140; Floralia 42: 371, as Cereus ro stratus. 



On page 209, vol. 11, insert the following: 



17. Selenicereus nelsonii (Weingart). 



Cereus nelsonii Weingart, Zeitschrift Sukkulentenkunde i: 33. 1823. 



A slender, much branched vine, i to 1.5 cm. in diameter, giving off occasional aerial roots; 

 ribs 6 or 7, low, somewhat tubercled; areoles small, circular, about i cm. apart; spines about 12, 

 acicular, white to yellowish, 5 to 7 mm. long; length of flower including ovary and closed perianth 



