1894. ] Notes and News. 87 
“Mr. Gammie’s report strengthens in me the opinion which I have 
hich I have never formulated, that Sikkim, for 
its area, presents one of the richest, if not the richest, botanical re- 
nese, and American mountains are all richly represented, and there 
also are found the principal types of the steppe and desert vegetations 
of Tibet and Central Asia., In its temperate region European genera 
orion accessible, the author has made a complete study of the de- 
hoe perm of Azolla, concerning which litttle is known. The anat- 
Pe Next © mature sporophyte had been thoroughly presented by Stras- 
eat ut the account of the development of the prothallia and em- 
eats still incomplete 
sherds siving a brief account of the structure of the mature sporo- 
gertni author describes the development of the macrosporangia, 
erodes hoon of the microspores, the germination of the macro- 
bm » the development of the archegonia, of embryo, of the cotyle- 
: f 
of the stem-qu 
Tesemblanee t quadrant, of the root, and of the foot. In ev 
Azolla, and th 
est living ally, 
he : ; . 
«phn netal conclusions as to relationships are summed up as follows: 
rv 
ery 
© no other form is indicated by the development of 
© genus seems an isolated one, with Salvinia as its near- 
ave arisen f 
li rom for 
"es, the Salviniace 
