90 House: Two Bahamian species of Evolvulus 



The South American E. incanus Pers. * has been credited to 

 Cuba on the strength of Wright's no. 3105. A careful compari- 

 son of the excellent specimens of this collection in the New York 

 Botanical Garden with South American material revealed the fact 

 that the Cuban material differs from the true E. incanus by its 

 relatively shorter and broader leaf-blades, smaller linear calyx-lobes 

 and a much smaller corolla, as well as by possessing a silky rather 

 than a shaggy pubescence. The Cuban material was accordingly 

 described as E. Wrightii. f 



Specimens of a closely related species have recently been col- 

 lected in the Bahama Islands by L. J. K. Brace, which differ from 

 E. Wrightii in having smaller leaf-blades, averaging less than half 

 the size of those of E. Wrightii and of auite a different shape. 



Evolvulus Bracei sp. nov. 



Perennial from a lignescent base, branching from near the base ; 

 branches spreading, numerous, short, 4—1 5 cm. long, glabrate 

 toward the base, toward the tips densely silvery-pubescent with 

 rather long, loosely ascending hairs : leaf-blades approximate, 

 sessile, elliptical-ovate, rounded or acute at the base, acute and 

 usually cuspidate at the apex, 3-5 mm. long, 2-1 mm. broad, 

 green above and moderately pubescent with long, loosely ap- 

 pressed silvery hairs, which are 1 mm. long or more, silvery- 

 pubescent beneath with similar but more numerous hairs : flowers 

 solitary on axillary pedicels shorter than the leaves ; calyx-lobes 

 lanceolate, acuminate, 2 mm. long, becoming 3 mm. long in fruit, 

 pubescent like the leaves ; corolla pale-blue, about 7 mm. broad, 

 the margin slightly 5~lobed ; capsules globose, 2-2.5 mm. 

 diameter, 1 -celled, 4-seeded ; seeds brown, minutely pitted. 



Bahama Islands : Andros, Mangrove Cay, Brace 4893, i9°^ ; 

 Crooked Island, Landrail Point, Brace 4575, Jan. 1906 (type); 

 Mariguana, P. Wilson 7318, 1907; North Caicos, P. Wilson 



77*9> l 9°7- 



New York Botanical Garden. 



in 



*Pers. Syn. 1 : 288. 1805. 



fBuIl. Torrey Club 33 : 316. 1906. 





