APPENDIX. 



275 



On page iii, vol. 11, under Wilcoxia striata, insert: According to T. S. Brandegee 

 (under date of June 8, 1921), the flowers of Wilcoxia striata are nocturnal. 



On page 112, vol. 11, nnd&r Peniocereus greggii, add to iWustrsitions: Amer. Gard. 11: 

 474, as Cereus greggii; Journ. Wash. Acad. 12: 329. f. i ; Succulenta 4: 71. 



On page 113, vol. 11, insert: , 



2. Peniocereus johnstonii Britton and Rose, Journ. Wash. Acad. 12: 329. 1922. 



A climbing or clambering plant, up to 3 meters long, with a very large fleshy root sometimes 

 weighing 14 pounds; stems and branches 3 to 5-angled, the young growth not pubescent; spines 

 9 to 12, brown to black, glabrous; upper radial spines short, stubby, swollen at base, nearly black, 

 the two lower light brown, elongated, bristle-like, reflexed; central spines i to 3, subulate, 4 to 

 8 mm. long; flower (only an old flower seen) about 15 cm. long; perianth-segments about 3 cm. long; 

 the lower and outer ones bearing tawny hairs and long bristles ; flower- tube slender, with prominent 

 areoles on knobby projections and bearing tawny wool and bristly spines; fruit ovoid to oblong, 

 about 6 cm. long, bearing prominent clusters of black spines, dry (?), many-seeded; seeds oblong, 

 3 mm. long or more, black, shining; seedhng dark purple; cotyledons very thick, triangular. 



Type locality: San Josef Island, off the east coast of southern Lower California. 



Distribution: Southern Lower California. 



This plant was always found growing up through bushes of Olneya tesota. 



Illustrations: Journ. Wash. Acad. 12: 330. f. 2; Succulenta 4: 73. 



Figure 248 shows a branch, old flowers, and seeds of the type specimen. 



Fig. 248. — Peniocereus johnstonii, showing branch, old flower, and seeds. 



On page 113, vol. 11, under Dendrocereus nudiflorus, insert: In 1922 Dr. L. H. Bailey 

 sent us two photographs and some stem-sections (No. 806) which he had obtained from 

 the Botanic Garden at Roseau, Dominica. It grows as a low, rounded, much branched 

 bush with the outer joints often pendent. Mr. Joseph Jones, curator of the Botanic 

 Garden wrote that the group is made up of six plants which have not been cut back or 

 interfered with in any way and have experienced two hurricanes without having a piece 

 broken off. One of our colleagues. Dr. William R. Maxon, who had rediscovered this plant 

 some years ago in Cuba, suggested that the plant grown in Dominica might be that 

 species; a careful study of our material convinces us that he is correct. Dendrocereus 

 nudiflorus, however, is naturally a large tree with a very definite trunk and a large, much 

 branched top. An explanation of this inconsistency is that the Dominican plant was 

 doubtless grown from cuttings, causing it to assume this bushy habit, a phenomenon also 

 observed in other cacti. 



Also insert: Cereus undiflorus is a misspelling, used by Sauvalle (Fl. Cuba 59. 1873) 

 and reprinted in the Index Kewensis (i : 493). 



Figure 249 is from one of the photographs sent us by Dr. Bailey. 



