GRIGGS: SPECIES OF HELICONIA 659 
same side of the rachis, much closer than in H. Champneiana ; 
their tips long, subulate, recurved with revolute margins ; flowers 
greenish, about 11 cm. long, tips projecting above the edges of 
the branch-bracts ; flower-bracts about 9 cm. long. (PL. 29, F. 2.) 
Growing on the steep sides of a wet clay ravine amid a tangle 
of tropical underbush, near the military road, 13 km. north of 
Cayey, Porto Rico (Underwood and Griggs wo. 363, June 24, 1901; 
photographs 2827 and 2829.) 
Our specimens of 7. Boringuena are, with one exception, the 
only representatives of the genus in the National Herbarium from 
Fic. 3. Heliconia Boringuena sp. nov. Whole plant, showing the habit and 
the upright inflorescence. Traced from a photograph by Mr. G. N. Collins (0. 2827). 
Porto Rico. The exception is Sintenis’s xo. 7731 from near Baya- 
mon, which was determined as HW. Bihat. Since, however, that 
species has leaves green on the under side such a reference is 
probably a mistake, for the leaves of Sintenis’s specimen are very 
glaucous below. Its leaves suggest H. Boringuena, for they are 
of about the same texture and size —as far as one can tell from 
the fragments preserved — but it has a long slender peduncle and 
the bracts are longer, narrower and triangular-ovate, without the 
Subulate recurved tip (in the specimen). 
