ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 489 
I. 1). In the third class these cells are narrow and much elon- 
ated, sometimes as long as the seed itself, and their thick 
s 
e 
Dr, enau, the acute observer of the Junci, has pub- 
Rahed the resulta of his observations on the seeds of the Ger- 
the crossbars of the reticulated seeds, transtilla, seems to him 
necessary, and for my semina lineolata he substitutes the 
words transverse reticulata, which is correct in itself and was 
used by me p. 431 and p. 432, II. 1. but does not seem to me 
to express the predominant character of these seeds as well as 
the former term. He also minutely describes ‘ie color of the 
seeds, a character which I have occasionally mentioned, but 
which seenis to be in most ——s too slight, and even vary- 
ings t to give it much import 
a Wachgorenis oaymeris ~ falcatus ought 
to be classed under I. 2. For “J. rudis” read J. microcepha- 
lus.. J. dubius comes a 5 3. a. mesic belongs rather be- 
tween I. 1 and I. 2,and J. Kelloggii near J. marginatus, II. 
1. J. longistylis together with J. obtusatus may be properly 
classed under I, 2. The apparent necessity of these numerous 
changes is a proof of the difficulty of properly classing the 
seeds; only completely ripe and well developed seeds ought 
to bd used for these investigations. 
. 433. It ought to have been stated that in the sys- 
townie arrangement all the species not rng marked as 
belonging to 3-androus sections, are 
Add: 5. sueurit for subsp. road 
Pag. 434. 10. J. Smithii comes pee me Aylli. 
Pag. 435. 27. J. repens was inadvertently classed with 
the 6-androus ana The Glomerulifiort would be better 
arranged thus 
* Triandri. (No. 26 b. & c. sepius uniflori; No. 30, 3-6-andrus.) 
J. Kelloggit, n. sp. California. 
J. triformis, n. sp. California. 
J. repens, Michx 
. marginatus, Rostk. 
J. leptocaulis, Torr. + Gr. 
* * Hexandri. 
J. faleatus, M 
satus, - =. California, 
z ioagiaiylin Torr. 
The other changes, necessary on this and the following 
page, the reader will please make for himself, following the 
text from p. 459 onward. 
J. acutus. The specimens said to come from 
New Jersey are from Z. Collins’ herbarium, and are, as Mr. 
