148 The Botanical Gazette. [May, 
the character of producing a single sporidium as peculiar to 
Coleosporium, but he names the entire tube from which this 
body is abscised a sterigma. Since the term sterigma is more 
or less broad, we may regard Coleosporium as possessing a 
truly non-septate promycelium, and still the above details will 
perhaps make clear the essential modifications in R. cassiacola 
and probably the general features in the germination of the 
genus Ravenelia. 
Polytechnic Institute, Auburn, Ala. 
EXPLANATION OF PLates IX anp X. 
Prate IX.—Fig. 1, germinating teleutospore, showing normal condition of 
Promycelium. Fig. 2, same as above with a slight geniculation and rudimen 
tary branching. Fig. 3, a promycelial branch almost at right angles to the 
f nd 4, stages in the deve 
tions g. 7, a and 4, same as fig. : 
but Tepresenting appearances on following day. Fig. 8, teleutospore with single 
promycelium and abscised sporidium germinating while still in the vicinity of its 
point of production. : 
Prate X.—Fig. 9, a and 4, peculiar development of a promycelium noted on 
successive days. Figs. ro, rr and 12, representing cells se 
and showing the location of the germ pores and the emerge hat 
celia. Fig. 13, teleutospore germinating, but so surrounded by other spores t 2 
ified. Figs. 14 and 15, normal teleutospores © di noses 
number of cells. Figs. 16, a, 6 and c, individual cells, showing relative thickn 
Notes on Carex. XVI. 
L. H. BAILEY. 
; ‘ato m 
unusual amount of carex material has come — 
e 
America and from very many collectors; in fact, t 
flora of the country has never had so many friends a5 
* Some of the most important facts concerning 
graphical distribution of species are recorded below. wa 
arex obesa All., var. minor Boott, heretofore not ere 
south of Saskatchewan, was collected last July upon high 
at South Fowl Lake, Northern Minnesota, by F. F. wor 
at pres 
the ge 
