





Two Bahamian species of Evolvulus 



Homer D. House 



th 



The group of species (Arbusculae) typified by E. Arbiiscula 

 Poir. contains at least four West Indian species. Of these E. 

 Arbusatla Poir. * is characterized by erect or ascending leaves, 

 canescent stems, lanceolate, acuminate calyx-lobes and a blue 

 corolla, while E. purpurco-cocrulcus Hook.,f a little-known spe- 

 cies, described from the vicinity of Manchester, Jamaica, is said to 

 possess spreading or reflexed leaves and appressed-pilose stems. 

 The Bahamian material formerly referred to E. Arbuscula, consists 

 of two very distinct forms : E. squamosus Britton, % characterized 

 by ovate, acute calyx-lobes, reduced or obsolete scale-like leaves, 

 and white corollas ; and another which resembles E. Arbuscula in 

 e shape of the calyx-lobes, but differs from it in having linear, 

 rather than lanceolate leaves and a white corolla with an almost 

 entire margin. 



Evolvulus bahamensis sp. nov. 



A tall, stout, erect, shrubby, perennial, intricately branching 



P * nt ' 40-IOO cm. tall; branches rigid and wiry, relatively long 



and obliquely ascending, sparingly canescent and glabrate below : 



ea -blades sessile, linear, strongly ascending or appressed to the 



em, 6-15 mm. long, rarely more than 1 mm. wide, the smaller 



eaves not relatively broader on the ultimate branches : lobes of 



e calyx lanceolate, slenderly acuminate ; the corolla white, the 



entire ; stamens nearly as long as the corolla. 



Bahama Islands : Inagua, Nash & Taylor 972, it 11 and 1176 

 ^Pe), 1904; Watling's Island, Britton & Millspangh 6082, 1907; 



onception Island, Britton & Millspaugh 6022, 1907; 

 and, Brace 4.262, 1906; Long Cay, Brace 4022, 19c 



Acklin's 



Cay, Brace 4022, 1906; Kleu- 



Mari 



* "a, P. Wilson 74 75f 1907 ; Great Ragged Island, P. Wilson 



<°37, lon-7 



907. 



t I Hr\!' :nCyC ' Sl,pP '- 3:4 59- lSl 3- 

 I;°: *J«* PI- 4*02. 1845. 



• *• Hot. Gard. 3: 449. 1905 



