2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. ^2 



cure additional material. In the latter part of December, 1920, Mr. 

 Pilkington returned to New York and brought with him two larg^ 

 boxes of plants, containing two sections of the trunk, several living 

 plants, and fruits of the new genus, as well as specimens of four 

 other species, with field notes and photographs. 



NEOABBOTTIA Britt. and Rose, gen, nov. 



A treelike cactus with a smooth upright terete trunk and a much 

 branched top, the branches strongly winged or ribbed, normally from 

 the distal end of the preceding branch, but sometimes from below the 

 tip and usually in the same plane ; ribs thin and high, very spiny ; 



Fk;. 2. 

 Flower and fruit of Neoabbotfia. Natural size. 



Howers nocturnal, small, tubular with a narrow limb, borne several 

 together at the distal end of a terminal branch from a small felted 

 cephalium ; perianth persisting on the ovary ; perianth-tube and ovary 

 bearing small scales with short wool and an occasional bristle in their 

 axils; perianth-segments very small; throat of flower a little broad- 

 ened at the top, bearing many stamens ; style slender ; fruit oblong, 

 turgid, nearly naked, deeply umbilicate ; seeds minute, black, 

 muricate. 



A monotypic genus of Hispaniola, dedicated to Dr. W. L. Abbott 

 a patron of natural history. 



Type sjjecies. Cactus paniculaius Lam. 



