Jennings: Contribution to Botany of Isle of Pines. 197 



488. Selenicereus ?p. 



Rocky slope of ridge at Bibijagua, facing the sea, May 7, 1910, 

 0. E. Jennings, No. 124. Not certainly, identifiable; no flowers or 

 fruit seen, but it probably represents an unpublished species still 

 being investigated by Drs. Britton and Rose. 



Family THYMEL^ACE^. 



489. Lagetta lintearia Lamarck. Lace-bark Tree. 



Lagettalintearia hAMARCK, Encyclopedic Methodique, Botanique, III, 1789, p. 376 



Northern part of the island, Blain, No. 158 (Millspaugh). General 

 Distribution: The species has been variously reported from Cuba, 

 Jamaica, and Santo Domingo, but with the more recent description 

 of new species, e. g., Lagetta Wrightiana Krug & Urban, it is likely 

 that this distribution will be decreased in extent. The writer is not 

 prepared, however, to dispute the correctness of the reference of 

 Blain's specimen to Lagetta lintearia. 



The lace-bark tree is said to be common in some parts of the island. 

 Dr. Britton has this to say of it in the San Juan region: "The Loma 

 Daguilla (Lace-bark Hill), an isolated mountain about 600 feet 

 high, situated about two miles west-southwest of the San Juan Hills, 

 is of exceptional interest. It takes its name from the lace-bark tree 

 (La Daguilla), a near relative of the Jamaica lace-bark, here rather 

 abundant; its inner bark is separable into a beautiful netted fiber." 



Family LYTHRACE^. 



Key to the Species Enumerated. 



Leaves linear-oblong to lance-oblong, more or less auriculate-clasping at the base. 

 Leaves about 3-7 cm. long; capsules 3-4 mm. in diameter. 



491. Ammania latifolia. 

 Leaves about 1-3 cm. long; capsules 2-2.5 cm. in diameter. 



490. Ammania auriculata. 

 Leaves not as above. 



Leaves less than i cm. long, broadly ovate, almost sessile, cordate at base; 

 flowers white. 



Disk more or less erect 492. Parsonsia Melanium. 



Disk horizontal 496. Parsonsia Swartziana. 



Leaves either distinctly larger or else tapering at base. 

 Leaves linear-otlanceolate, up to about i cm. long. 



495. Parsonsia pseudosilene. 

 Leaves lance-oblong to ovate. 



