1922] Fernald,—Notes on Sparganium 27 
fate of so many elderly Polish and Russian scientists! and there is 
no assurance that his monograph will soon be published, it seems 
important that, in so far as they clarify our understanding of 
the species, his critical notes on American Spargania (contained in 
long and detailed letters to the present writer) should now be quoted. 
The following notes are, therefore, based in part upon a review just 
made of the specifie characters of Sparganium in eastern America, 
in part upon Dr. Rothert's notes. 
SPARGANIUM ANDROCLADUM (Engelm.) Morong, Bull. Torr. Bot. 
Cl. xv. 78 (1888), in part and as to name-bringing synonym; Bick- 
nell, ibid. xxxv. 58 (1908). S. simplex, var. androcladum Engelm. 
in Gray, Man. ed.5,481 (1867). S. lucidum Fernald & Eames, Rxo- 
DORA, ix. 87 (1907); Rydberg, N. A. Fl. xvii. 7 (1909). 
When S. lucidum was published too much dependence was placed 
upon the abundant specimens of branching S. americanum Nutt. 
(S. simplex, var. Nuttallii Engelm.) which had been labeled by Morong 
as S. androcladum. 
As Dr. Rothert points out in a letter, Engelmann distinguished his 
var. androcladum from the branching state of S. americanum, and a 
detailed study of all available material makes this clear. In branch- 
ing S. americanum the branches usually bear 1-3 pistillate and 1-6 
staminate heads; in S. lucidum 3-8 staminate and usually 0 (very 
rarely 1 or even 2) pistillate heads. In S. americanum the fruiting 
heads are 1.5-2.5 cm., in S. lucidum 2.5-3.5 cm. in diameter; in S. amer- 
icanum the mature carpels have the stipe 2-3 mm. long, the body 4.5- 
5.5 mm. long and about 2 mm. thick, the beak 1.5-5 mm. long and the 
stigma 1-2 mm. long; in S. lucidum the stipe measures 2.5-4 mm., 
the body 5-7 by 2.5-3 mm., the beak 4.5-6 mm. and the stigma 
2—4 mm. 
Engelmann's original treatment clearly shows, as Rothert points 
out, that the branching state of S. americanum (the plant taken up 
largely by Morong and later by Rydberg as S. androcladum and 
by Fernald & Eames as S. americanum, var. androcladum) was 
considered by him merely a trivial state of his var. Nuttallii and that 
his new var. androcladum was S. lucidum, most appropriately named 
by Engelmann from the ordinarily wholly staminate branches of 
the inflorescence. Engelmann's treatment follows: 
lSee Revue Gen. Bot. xxxii. 238 (1920). Professor de Jaczewski of Petrograd 
informs me that Dr. Rothert died in 1917. 
