FISHER: SEED DEVELOPMENT IN THE GENUS PEPEROMIA 139 
him. The plants of Peperomia reflexa, P. verticillata, P. metallica, 
P. blanda, and P. galioides were carefully compared with herba- 
rium specimens of these species, which had been determined by 
the same authority. The material of P. Fraseri, var. resediflora 
was obtained from a plant, labeled P. resedaeflora, in the green- 
house of the “ Pflanzenphysiologisches Institut’? in Munich. 
The material of the species which is here referred to as 
Peperomia Langsdorffii Miq. (?) was secured from a plant growing 
in the greenhouse of The Johns Hopkins University. This plant 
was obtained from the New York Botanical Garden, and their 
plant was secured from the ‘‘K6niglichen Botanischen Garten,” 
Dahlem, Germany, where it is known as Peperomia humilis (Vahl) 
A. Dietr., which is there considered to be equivalent to Peperomia 
Langsdorfii Miq. After an examination of a specimen of the 
Johns Hopkins plant and one of the New York plant, Dr. Casimir 
de Candolle thinks it can not be referred to P. Langsdorffii Miq., 
but that it is very probably a new species. However, in the 
absence of any other name, the plant will be referred to in this 
Paper as P. Langsdorffii Miq. (?). 
The material was killed and fixed in medium chromo-acetic, 
in acetic acid and absolute alcohol, or in Flemming’s fluid. The 
first mentioned was generally the most satisfactory. 
The stains used were Haidenhain’s iron-alum haematoxylin, 
counterstained in Orange G; and Flemming’s triple. The former 
combination was more satisfactory for the younger stages, while 
the latter was better for the later stages, in which the embryo and 
endosperm were formed. 
For the sake of clearness, each species will be described sepa- 
rately, after which the general considerations will be taken up. 
PEPEROMIA REFLEXA A. Dietr. 
Peperomia reflexa A. Dietr., being typical of the series of 
Peperomias studied, will first be considered somewhat in detail. 
Part of the material of this species was collected on rocks at 5,000 
feet elevation near Cinchona, where it grew on the dry south side 
of the Blue Mountains of Jamaica. Most of the material, however, 
Was collected from two plants in the greenhouse of The Johns 
Hopkins University at Homewood. One of the greenhouse plants 
