40 BROOKLYN BOTANIC GARDEN MEMOIRS 
PIPER RETROFRACTUM Vahl. Cultivated on St. Thomas. 
POTOMORPHE PELTATA (L.) Mig. [Piper peltatum L.; P. umbel- 
latum L.] Forests, shaded banks and along rivulets, St. Thomas; 
St. Croix. 
PEPEROMIA GLABELLA (Sw.) A. Dietr. [Piper glabellum Sw.] 
On trees and rocks in forests, St. Thomas; St. Jan. 
PEPEROMIA ALATA C. DC. [P. cubana of de Candolle, in part.] 
On trees, St. Croix. 
PEPEROMIA PELLUCIDA (L.) H.B.K. [Piper pellucidum L.] On 
walls and in wet shade, St. Thomas; St. Jan; St. Croix; in forests, 
St. Croix (according to Eggers). 
PEPEROMIA SCANDENS R. & P. is recorded by C. de Candolle as 
found by Friederichsthal on St. Thomas (Prodr. 16': 434, 1869); 
but in his description of West Indian Piperaceae (Urban Symb. Ant. 
3: 229. 1902), St. Thomas is not cited. The earlier record is, pre- 
sumably, erroneous. 
PEPEROMIA GUADALUPENSIS C. DC. [Piper acuminatum of West; 
P. acuminata of Eggers, in part.] St. Croix, according to de Candolle, 
collected by West; on rocks in forests, all islands (according to Eggers). 
PEPEROMIA HAMILTONIANA Miquel. [P. Hamiltoniana emarginula 
C. DC.; P. acuminata of Millspaugh.] Shaded rocks, St. Croix. 
PEPEROMIA MAGNOLIAEFOLIA (Jacq.) A. Dietr. [Piper magnoliae- 
folium Jacq.; ? Piper obtusifolium of West; Peperomia obtusifolia and 
P. obtusifolia clusiaefolia of Eggers.] In woodlands, St. Thomas; 
St. Croix. 
PEPEROMIA HUMILIs (Vahl) A. Dietr. [Piper humile Vahl; Peper- 
omia Langsdorfii Miq.; P. polystachya of Millspaugh.] Shaded rocks, 
St. Thomas; St. Jan; St. Croix. 
PEPEROMIA MYRTIFOLIA (Vahl) A. Dietr. [Piper myrtifolium 
Vahl.] St. Croix, collected only by Pflug. Endemic. 
PEPEROMIA POLYSTACHYA (Ait.) Miq. [Piper polystachyon Ait] 
St. Croix (according to Hooker); among rocks in forests, all islands 
(according to Eggers). Perhaps not distinct from P. humilis. 
PEPEROMIA RUPERTIANA C. DC.(?) . Wet, shaded bank, Rosen- 
berg, St. Jan. Determined from a barren specimen, and identification 
therefore doubtful. 
SALICACEAE 
SALIX CHILENSIS Molina. [S. Humboldtiana Willd.] In water, 
near Grove Place, St. Croix. 
ULMACEAE 
CELTIS TRINERVIA Lam. Forests and thickets, St. Thomas; 
St. Jan. 
