93] Cactaceae. 93 



Selenicereus hamatus (Scheidw.) Britton and Eose 1. c. p. 430 (= Cereus haniatns 



Scheidw. = C. rostratus Lern.)- — Mexiko. 

 S. hondurensis (Schum.) Britton and Rose 1. c. p. 430 (= Cereus hondurensis 



Schum. = C. Kunthianus Schum). — Cultivated in Bot. Gard. Berlin as 



from Honduras. 

 S. Kunthianus (Otto) Britton and Rose 1. c. p. 430 (= Cereus Kunthianus Otto). 



— Honduras ? 

 S. Macdonaldiae (Hook.) Britton and Rose 1. c. p. 430. Plate LXXVI (= Cereus 



Macdonaldiae Hook.). — Honduras. 

 S. Maxoyiii Rose 1. c. p. 430. — Cuba (Maxon n. 4024). 

 S- miravallensis (Weber) Britton and Rose 1. c. p. 431 (= Cereus miravallensis 



Weber). — Costa Rica. 

 S. Pringld Rose 1. c. p. 431. — Mexiko (Pringle n. 7841). 

 6'. pterantJms (Link and Otto) Britton and Rose 1. c. p. 431 (= Cereus pteranthus 



Link et Otto = C. nycticalus Link = C. brevispimdus Salm-Dyck). 



— ibid. 



S. spinulosus (DC.) Britton and Rose 1. c. p. 431 (= Cereus spinulosus DC). 



— ibid. 



Weberocereus Britton and Rose gen. nov. in Contrib. U. 8. Nat.Herb. Washington 

 XII (1909), p. 431. 



Slender climbing cacti with angled stems and branches emitting 

 aerial roots, the areoles bearing a tuft of short wool and several weak 

 acicular bristles; fiowers pink or rose-color, nocturnal, short-funnel-form 

 or funnelform-campanulate; ovary tubercled, areolate, the areoles bearing 

 weak filiform bristles or stiff hairs, the lower part of the coroUa-tube 

 with a few similar areoles, the upper part with a few foliaceous scales; 

 outer perianth segments reflexed-spreading, blunt, linear-oblong, the 

 inner lanceolate, acutish or obtuse; stamens about as long as the style; 

 Stigmas few, linear; fruit „elongated, spinöse, yellow" (Schumann). 



W. Biolleyi (Weber) Britton and Rose 1. c. p. 431 (= Rhipsalis Biolleyi Weber 

 = Cereus Biolleyi Weber). — Costa Rica. 



W. tuHÜla (Weber) Britton and Rose 1. c. p. 432 (= Cereus ttinilla Weber = C. 

 Gonzalezii Weber). — ibid. 



Werckleocereus Britton and Rose gen. nov. in Contrib. U. S. Nat. Herb. Washington 

 XII (1909). p. 432. 



An elongated climbing cactus, the 3-angled or 4-angled branches 

 emitting aerial roots, the areoles bearing short circular bristles and a 

 tuft of very short wool; fiowers nocturnal; corolla creamy-white, funnel- 

 form, the tube nearly twice as long as the limb; ovary and corolla tube 

 bearing many areoles each with several nearly black acicular bristles 

 and a tuft of short black wool; outer perianth segments lanceolate, 

 acutish, the inner Ijroader; stamens many, bluntly pointed; style about 

 as long as the longer stamens, with several linear stigmas; berry 

 globose, its apex umbilicate, citron-yellow, the flesh white, the seeds 

 shining (according to Schumann). 



W. Tonduzii (Weber) Britton and Rose 1. c. p. 432 (= Cereus Tondnzii Weber). 

 — Costa Rica. 



Wilcoxia Britton and Rose gen. nov. in Contrib. U. S. Nat. Herb. Washington 

 XII (1909). p. 434. 



