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. lematrei, but 
differs from it in the whitened stems. We do not know its flowers. 
On page 197, vol. 1, under Selenicereus grandiflorus, insert: Cereus haitiensis Hortus 
is cited by Schelle (Handb. Kakteenk. 89. 1907) as a synonym of C. grandiflorus. 
Cereus grandiflorus flemingit 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. spectosissimus. 
Add to illustrations: Fl. Serr. 3: pl. 1-2, as Cereus grandifloro-speciosissimus; Balt. 
Cact. Journ. 1: 56, as queen of the night; Remark, Kakteenfreund 8; Gartenflora 42: 
541. f. 110; 64: go. f. 22; Gartenwelt 16: 613; 19: 18; Gard. Chron. 1. 14: 187. f. 36; 
Thomas, Zimmerkultur Kakteen 15; Tribune Hort. 4: pl. 139; Blanc, Cacti 32; De Laet, 
Cat. Gén. f. 29; Fl. Serr. 3: 233-234; Weinberg, Cacti 8; Knippel, Kakteen pl. 1; Goebel, 
Pflanz. Schild. 1: pl. 2, f..5; Mollers Deutsche Gart. Zeit. 14: 340 to 343; 20: 561, as 
Cereus grandiflorus; Cafiizares, Jard. Bot. Inst. Habana Ioo. 
On page 198, vol. u, under Selenicereus urbanianus, add to illustrations: Gartenwelt 
12: 255, as Cereus urbanianus; Roig, Cact. Fl. Cub. pl. [3,] f. 2; pl. [4], as Selenicereus 
maxontt. 
On page 199, vol. 1, 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. 15; 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. u, under Selencereus boeckmannii, add to illustration: Blithende 
Kakteen 3: pl. 175; 176, as Cereus boeckmannii. 
On page 202, vol. m1, 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 ; 
fonatsschr. Kakteenk. 30: 107; Gartenwelt 16: 537; Mollers Deutsche G&art. Zeit. 25: 
488. f. 22, No. 6, as Cereus macdonaldiae, Blithende Kakteen 3: pl. 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. II, under Selenicereus hamatus, add to illustrations: Tribune Hort. 
4: pl. 140; Floralia 42: 371, as Cereus rostratus. 
On page 209, vol. 11, insert the following: 
17. Selenicereus nelsonii (Weingart). 
Cereus nelsonii Weingart, Zeitschrift Sukkulentenkunde 1: 33. 1823. 
A slender, much branched vine, 1 to 1.5 cm. in diameter, giving off occasional aérial roots; 
ribs 6 or 7, low, somewhat tubercled; areoles small, circular, about 1.cm. apart; spines about 12, 
acicular, white to yellowish, 5 to 7 mm. long; length of flower including ovary and closed perianth 
